RC India

Now you can make a quadcopter within 1350/- :o :o

Yea you read it right a (mini) quadcopter within 1350/- all you need is a kit (http://www.quadkopters.com/product/diy-v939-quadcopter-kit/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to) and a compatible

transmitter and some good ideas and lot of patience :giggle:

Kit comes with following items

• 4 x 716 coreless motors
• 1 x Receiver/controller
• 1 x 350mah 3.7V lipo
• 1 x USB Charger
• Props
• 3 x Bamboo sticks 300mm long each

With the stock kit you can make a mini  quad which has to:
 1. less than 120 mm motor to motors
 2. less than 35 grams

Here is the list of compatible radios which you need to have.

• FlySky FS-TH9X 2.4G 9CH transmitter
• Turnigy 9X 9Ch Transmitter w/ Module
• FlySky FS-T6 2.4ghz Digital Proportional 6 Channel Transmitter and Receiver System *NEW*
• FlySky FS-CT6B 2.4GHz 6CH Transmitter
• Hobby King 2.4Ghz 6Ch TX

How to bind the transmitter with receiver/Bind instructions:

 1. Plugin battery to receiver LED will flash quickly and stops
 2. Keep it on flat surface and LED will start to flash again at a rapid rate
 3. Hold bind button on your TX and switch it ON
 4. LED on receiver should start to flash slowly
 5. Turn off your TX and leave the bind button and switch ON your TX again.
 6. LED on receiver should be solid now, which means its binded successfully

*You will have to repeat the bind process every time you remove the battery from the receiver

You can check the original thread here at RCG for more ideas.

You can also buy spares to improve your mini quad to mid to large size.
 720 coreless motors (http://www.quadkopters.com/product/7mm-hollowcup-coreless-motors-1-pair-for-diy-kit/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to) can be used to make a mid to large size quads (250mm to

450mm)
 HCX552 (http://www.quadkopters.com/product/hx552-controller-receiver/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to) an alternate controller for V939 much more stable than V939
 716 coreless motors (http://www.quadkopters.com/product/716-coreless-dc-motor-high-speed-x-4/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to)
 V939 controller (http://www.quadkopters.com/product/v939-controller-receiver-board/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to)

How To:
http://www.youtube.com/watch?v=m6bHvD4IdYo

You can find lot of videos uploaded by user and images in this thread, i am listing few.

By Shiv:
http://www.youtube.com/watch?v=UBINYrFdOtY

By Arun:
http://www.youtube.com/watch?v=DDzTo7Gc33U


You can buy the kit from here (http://www.quadkopters.com/product/diy-v939-quadcopter-kit/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to)

I have used Popsicle/ice-cream sticks :giggle: :giggle: to make the base and stands. Easily available at any stationary shop. Also i have used cap of pen (2 Rs. pen) for holding up the motors ;) ;). All these are holding together in place using hot glue along with fevicol and fevikwik. Its first time i am using hot glue.

I am kind of doubtful about getting good results with using hot glue, as motors will get hot after long use and having hot glue to hold them is not a good idea i think.  :headscratch: :headscratch: Any ideas for any alternative glue or anything guys??

Last thing is the weight of this tiny quad. I had few lipos and controller from few of my lady bug quad, got them together and here you can see in image.

This is not final but should be around 40-45 grams.

am in.....when will it be available at your store?

does that thing fly? tested? is it the 18$ quad from the rcgroups?

@rahul Off course it will fly, it has all the ingredients to fly, motors props controller and light weight for the motors to take it up in the air.

@bilal yes very soon, Chinese are having some holidays after that will soon get the stuffs in store.

I would be the second one to fly this :D how about a hex? possible?

You imagination is the limit :thumbsup: if you see that thread, some users have build a quad upto 450 mm and octa :O

as the stuffs required to build is very cheap guys experiment a lot.

i am also in......... book the third for me !!!
 (:|~

Hi,
Satya i have gone through all 65 pages ( then ) and found it to be interesting and tried to go for .... but  i there happens to be some trial part with the motors and props and which board to use...

Hope you do that for us....!!! it will be great to try!!!!

regds
saurabh

The kit that i am getting will contain everything,

4 x motors
1 x receiver/controller
4 x props (2 x CW and 2 x CCW)
1 x 1 cell LIPO
1 x USB charger

and few bamboo sticks.

You will need only one of the above listed transmitter and your imagination ;)

what are the motors you will be using? brushless or brushed? and ESC? what about control board?? :)

thanks!
aniket

brushed, no ESC, toy quadcopter control board from banggood.

oooh...

tiny brushed motors, the FC is the V939 controller which has ESC and 4 ch 2.4Ghz receiver build on the controller it self

Edit:

Correct BUT not from banggood from different manufacturer.

so is it possible to upgrade it later? and how does one bind it? can i make a tricopter out of it also if i want to??? ;D

yup. you can even make a tri-octa-hexa-quad copter. :)
your flight time will become less. Just keep the ratio of the weight and thrust constant and place 2 batteries.

so if i make a tricopter, then can i use a servo for turning??? :D

Not sure that we can tri out of it, but you can see that thread and find it out. About binding, its very simple first turn on the FC then your radio if its compatible then it will bind else wont.

One for me!

@aniket: nice thought, I have this control board and all stuffs to make this quad bought long back didn't get time to build but once I checked with servos and were not working.. may need to check with ultra micro ones... but I don't have now...
:(

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Book one configuration for me too!

Sent from a potato using a lamp

When will these be up for sale? I think some spare motors and props in the kit will increase the success rate of newbies like me..

These motors get pretty hot. Use five min epoxy.

Pretty soon right now i have managed to get my hands on few kits. Once i get atleast 10 kits i will put them on sale.

below 1200 is really a fantastic price for this combo.. :)
I will recommend you to keep some spares also in your store... atleast motor and props... :)

I second that. Even if we are to ship the parts overseas, it would be well over 1.2K. Best of luck! I can't wait to get my hands on one :D

so will it be possible to fly two of these at once? can my friend and i fly each others together, or will there be interference from each other?

The turnigy 9x and the hobbyking T6A radios are known to bind with these boards. They are both on the FHSS as far as I know. So no problem of interference then. But I have read that many of the newer boards require you to rebind the Tx everytime you change the battery.

That will be cool! Can't wait for quadcopters to stock it ;D

Sent from a potato using a lamp

Everything i have just the FC is the stuff that i am waiting for :(

Which one? V929 or the later ones?

V939 better and smaller :giggle:

Hey any updates? ;D

Hey, was about to update:

I will get the parts in 2-3 days time. Then i will put it up for sale, so may be by Friday-Saturday.

All items arrived today :salute: :salute:

Will put it up for sale tomorrow, but can ship it only from next week i.e. After 27th

Kit will include:

4 x coreless burshed motors 716 (2 x CW and 2 x CCW)
1 x V939 controller/receiver
1 x 350mah 1S Lipo
2 x pairs of props (orange and black)
1 x USB charger
3 x 45cm long bamboo sticks

Selling price 1350/- including shipping to all over India

Satya bro What is the need of the cw and ccw motor? ? ?
Changing polarity will do the job right?
And are you going to sell this as separate parts or only as a kit?

Right changing the polarity will work (that would have saved my lot of money) But if you read that thread at RCG the author very strongly recommends to get the CW and CCW motor for better performance.

No it will be a part of kit. Parts will not be sold separately as i have all parts as kit.

But i dont think so.. As the coreless motor actually doesn't  have polarity...
I have many with me with same color wires out from the motor .. cw or ccw it wont affect the performance... :)
Any way book one kit for me.. :) :) :)

Will V939 board bind with

 - V929's remote?
- 6 ch Flysky (2.4Ghz) Tx available from RCB?.

Let me know

Thanks
Hellyflyer

Yes both the tx will work perfect...

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If this works with a HK T6A-V2 Transmitter, count me in. Bank details please.

Please book one for me too.  :)

I have a Sanwa SD - 6G. Can anyone please advice whether the board would bind with it or not?

Right, it shouldnt have a polariy. Maybe these motors are broken in to align the brushes cw or ccw using the water dippin technique

This motors are coming with micro jst plug and they can be inserted in only one way to the female plug, So Reversing the polarity on the male jst plug will make it cw and ccw...
Simple....

Nopes i have motors with different set of wires (RED BLUE and Black White):P

Actually if this had been the case then i would have sold this a long time ago. I was waiting for Syma guys to supply me the motors. If you read that thread in RCG there is a post where one guy has done a review on motors. He has said that S107 motors (Motor A and Motor B) are the best for this. Hence i was inclined to SYMA guys for the motors. It was long long wait for them to deliver the goods.

Here is how the motor looks.
http://gyazo.com/3c61ff5dc678227fb1a9f147f47fbfe6

Male micro JST is on the board. Motors does not have any connectors. But i will provide 4 x female micro jst connectors.

We know you will be giving us the best among... :p
And when you can ship this waiting for that.. ship along with the new quad kit combo... ;)
Will deposit the money tomorrow for both

Well in that case I'm kind of convinced its the orientation of brushes.

Nothing to do with or hijacking your thread satya but curiosity is good :D.

Good effort on the kit

Girish bhai if you dont mind can you explain on this.. :)

Which kit man??? :P

No problem GS. I always love curiosity :thumbsup

Arun. I can try and explain but you will have to bear with my rudimentary drawing techniques. I might be incorrect but aligning the brushes as shown increases their life. Smaller motors mostly have the thin wires making up the brushes like shown in the picture. In the attached pic, the arrows show the direction the commutator should revolve, so there is no carbon to shape itself as per the motor revolution. Does not mean that the motor cannot revolve in the other direction;it surely can. I've also seen some brushes having a circular kink at the point where the commutator contacts meet the brushes. Probably that is to facilitate motion on both sides.

If the movement was in the opposite direction to as shown, tension being higher closer to the fulcrum on the brush, the slot on the commutator would experience more traction moving inwards causing higher wear and slightly lesser rpms.

Update: Marked various points on the image. Yellow motor direction, red brush fulcrum, white tension points

Ok Up for sale: you can buy from here (http://www.quadkopters.com/product/diy-v939-quadcopter-kit/?utm_source=rci&utm_medium=post)

only 15 kits in stock now. Will bring more if we have big demand.



PS. How do i edit the first post?? :headscratch: :headscratch: want to add purhcase link in there.

Hehe done
If you want to edit that again.. contact our admin.. :)
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Satya sir, book one for me.....will the FC board included in the kit needs any type of programming?

sir, am somehow not able to order the quad on the website, whenever I click on 'add this to my cart' an error message pops up, stating "we don't have 5 of DIY V939 Quadcopter kit, please select 4 or less"...although am ordering just one kit
please help

regards
Bilal

Bilal sir, open your cart and clear all the items. And try again.

PS. Please dont refer me as sir :)

Motor connection and V939 board orientation:

Satya,
thanx for the quick response bro, that problem has been resolved, but I have selected NEFT transfer as the mode of payment, but my bank (PNB) does not supports NEFT transfers after 06:00 pm, so I'll be able to pay you tomorrow morning, can you please hold my order until then?

and please call me Bilal, I have done nothing to be elevated

one more thing, is any kind of programming required with this flight controller?

regards
Bilal

Sure Bilal all buyer's have time till Sunday for the payment. I will start shipping from Monday.

No we dont need any kind of programming its pre-programmed board. :thumbsup:


Just 3 kits left guys hurry up. Next stock will come after 2-3 weeks time ;)

is all hardware included in the kit because i kind of only have v911 tx.. :)

And please satyagupta can you upload a build log using the kit parts?
 :thanks:

Payment made this morning for Quad kit, silicon wires and some props. Please confirm.

@avesh, you can check the link it has all the parts you need to build it except tx

@lastrites thats wat my plan is today :giggle:

@VC sir yes i have received your payment :thanks:

Satya bro, please check your pm and revert

cheers
Bilal

I am very sorry guys but today while i was making a how to video i realized that motors sent by my supplier is incorrect :banghead: :banghead: :banghead: Due very silly mistake by the supplier i wont be able to send the kit from Monday. :( i am very sorry for this but i cannot send you a incorrect kit cos the motors that i have will not work with the prop set that i have. I will get the correct motors in like 4-5 days of time. And i will ship them from next Monday (3rd of June)

I have conveyed this to all the buyers who placed order for the kit. And each and every buyer has co-operated with me. I am very thank full to all members for understanding the issue and co-operating with me in the delay  :bow: :bow: :bow:

No problems. Take your time.

its a bad news, yet a good news for bilal.. >:D

he was so upset not able to do the payment today.. so was expecting delay on his shipping..

Satyagupta, As you are yet to import some more CL (Coreless) motors, would you purchase some extra motor and prop for paper planes and spare ? And if similar cheap rx+esc available in combination with linear/coil & magnet servo combo ? Hobbyking have similar but not so cheap. Price for similar board are reducing day by day. So, I ask you this. Similar RTF available for plane @3998/- at RCBazaar. So, you can get the similar from same supplier.

And for motor, CW and CCW does affect for their build in magnetic neutral axis shifting for armature reaction and hence, full load torque and life of brass commutator due to increased sparking. I have burnt already one CL motor brass and later replaced with thin wire.

Kalyan sir you can go for the v911 heli spare board for esc and 2 servo combination under 6gm
And binds with turnigy and fly sky...
For just 10$ in ebay
I have build one with it, works really nice...
http://www.rcindia.org/electric-planes/night-vapour-clone-(homemade-micro-flyer)/

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@Kalyan sir, i can get the CL motors and the V911 board as suggested by arun but as i am dont have any knowledge about planes i would be only seller for you. I would talk with Arun and get the board. As motors and battery i already have them.

@Arun bhai so that V911 board that you told me about is that the same thing Kalyan sir asking about?

hey Satya bro, how can I change the gyro sensitivity setting for the V939 board you are suppling with the kit, If am flying with my Turnigy 9X radio......any ideas?....I searched on RCG too but found nothing

this video is for reference
http://www.youtube.com/watch?feature=player_embedded&v=fI2ijNrsTO0

regards
Bilal

Satya bro kalyan sir is taking about these kind of boards
http://www.hobbyking.com/hobbyking/store/__18823__2_4Ghz_SuperMicro_Systems_Receiver_Brushless_ESC_and_2_x_Linear_Servos_All_in_one_5ch_.html
http://www.hobbyking.com/hobbyking/store/__17638__2_4Ghz_SuperMicro_Systems_Double_Linear_Servo.html

Which are expensive and also only compatible with the super micro series transmitter modules from hk...
I just suggested the v911 as an alternative.. I used it successfully.. And i think its enough for a 3-4 ch micro plane...
And I searched a lot for a compatible one within budget but unable to find one.. But sure there may be... :)

And kalyan sir did you gone through this?
I always open this in a tab for a try but fails due to lack of electronics knowledge...This is the cheapest and lightest rx for flysky, turnig
http://www.rcgroups.com/forums/showthread.php?t=1798913

Here is the quad in building stage.. need to get some wire extension.. waiting for that..

I requested satya to send me the kit without motors.. as I already have that...


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Thanks Arun bro :salute: i will be getting motors by tomorrow or Saturday.

Looks great bhaiya. :)

arun bhai another small quad of our quad king.....

hello .. me a complete newbie to RC and the related technologies... so firstly apologies if not the right thread to post.

I have a camera gopro hero3 black... so was looking for quad which i could asemble / buy which can hold the camera and i can remotely control the quad.

Appreciate if someone can direct me to the right thread or the right approach to get started on this .. cheers and thanks again.

You can either build one or buy a RTF KIT many LHS these days have KITS which has everything except a radio controller. You just need to assemble it and fly. one of such kits http://www.quadkopters.com/product/qk525-arf-rtf-quadcopter-kit/ :D

Exactly. go with this kit. Perfect for a beginner!

hey is this video of the "SAME" quad you are selling? or are there some changes in motors etc? :headscratch:
i found it on the 18$ quad rcg thread..

http://www.youtube.com/watch?feature=player_embedded&v=MRlHhQ9_A00

Aniket this is the same and you can read the first post to understand that...
Satya has provided the link also to the 18$ quad in rcgroups..
:)

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@arun i was curious because i thought that maybe satyagupta made some mods to it or replaced some parts... :P
  so cool!  cant wait to get it! :D :D

Motors arriving in 2 hours, will pack the orders and ship them on Monday

Thank for the patience and your co-operation :hatsoff: :hatsoff:

Motors arrived and orders packed. Shipping starts from Monday :thumbsup:

Post a build log with a lot of pictures please ;D A friend ordered for me..hope I get mine soon :P

I have a video i will post it soon.

Stocks empty for last 1 week in store of quadcoptor.com.

Orders packed and will go out from tomorrow  :thumbsup:

Find yours :giggle: :giggle:

@kalyan sir yea i had only 15 kits. Had blocked sale for sometime. Only 2 kits left and its open for sale.

Nice stickers!

Please book one for me. PM me the account details to deposit the amount.
My address is
==============
Withdrawn
Ordered through the site.
Thanks Satyagupta
==============

Thanks in advance

Kalyan sir you can place order online, select NEFT or bank deposit as payment method and you will get bank details in your mail.

Here is the flying video of the quad... :D
And it looks very stable, need to do some more corrections.. This is just a speed build.. :)
http://www.youtube.com/watch?v=VlZyYYc5UDg

Awesome Arun!
Are those cable ties for the landing gear?
Could you put up some close up images of your quad?
Thanks!

Thanks veloci... See post #73..
if you want more i will put.. cable ties as landing gear...
sketch pens as motor holder...
kk2 foam box as center plate.. :D
And finally some glue'ngs...

More close up pictures please... ;D
Also, what glue have you used?

sure i will post some pics in sometimes...
I have used superglue for 90% build and hotglue for rest

Would asking you to put up a 'brief' build log be too much?  ;D

Not at all.. I can, But you guys try this first...  ;D
This is really simple, If some one faces real problems on building this sure i can do a build log..
I am trying to do some flip and rolls right now... But not able to... >:( >:(

 Ok  :(
Have you tried reducing the motor-to-motor distance? Make it more compact for quicker response?
Also, those are 3 inch props rite?

Already the motor to motor length is 250mm and I like the stability and fast responce...
It can do flips need to practice.. let me see... :)
Now we can see many builds here in a week... :)
So that we will get new ideas and reviews... :p

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Arun bhai,
which Tx are you using, and is it possible to change the gyro sensitivity setting with turnigy 9x as shown in the video I posted earlier?
Bilal

Bilal I am using same turnigy 9x..
I am not able to view your video...
I don't think you can change the gyro sensitivity in this fc...
But it will adjust with respect to the quad length automatically I guess..
I am using a 250mm frame and looks pretty good.. yaw is a bit hard.
Now going to make the frame good looking..
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wow arun congrats...! nice video! now i cant wait to get my hands on that kit.... ;D

when you say yaw is hard, what do you mean? does it turn very slowly?
thanks!

Nice arun bhaiya. :)
great video

Thanks arun for the video its flies good. I have made a H quad with it. :salute:

About the build log i will be putting up a video but guys this is a DIY kit so seriously lets put out thinking cap and come up with something. :thumbsup:

Satya bro, does the H-Quad YAW properly? I mean, there is no pitching rite?

well the H quad that i made its flying but its is not very stable. I just wanted to test it so i hurried upon it.

But while typing i think there would be a pitching problem. The frame that i have made is not very long compared to arms. I did read some where that with H Quad the arms should be half the length of the quad. :headscratch:

Not very sure

 ;D Photos....possible?

Sure the whole video will come up, editing right now ;)

 (:|~ waiting eagerly!

Thanks rahul..
@satya: love to see a flying video of your h-quad
I am going to alter this quad.. as the power is a bit low.. and need to build another after getting the motors.. may be these motors are a bit slow..
And need to reduce the dimension to 200mm..

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That's what i was talking about!  ;)

:thumbsup:

I think the smaller the better. But i would really one day (i dont know when) would make a 450 mm quad with this kit :D

Really???  :o :o :o

yea if you see the thread at RCG even the video that aniket posted here (http://www.rcindia.org/multirotors/a-small-diy-quad-within-everyone%27s-budget/msg141569/#msg141569) features a 450 mm quad.

What about an octocopter.. :D:D:D
Even that is in that thread

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Great Satya Bro! Didn't see it in the begining...
Arun, There IS already a octacopter on RCG albeit different  ;D

@arun, technically its not octocopter. If you see closely he is just dividing the 1 motor to 2 motors. I dont know how to make sense out of this, but then M1 out from V939 is connected to 2 motors (1 is CW and another is CCW)

So its like 2 motors for 1 in the quad.

payment to order # 201305469 made.. please revert to "bilal"...

thanks,
regards

How to make a quad using this KIT step my step

http://www.youtube.com/watch?v=m6bHvD4IdYo

Im not into quads but amazing work satyagupta sir,youre building up my interest in quads  :giggle:

Nice video but I think there should be instruction on screen for the measurements of sticks and board placement {:)}

Superb build log...
Could have added a flying video at the end....
Great going satya bhai. :)

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@priyum thank you so much :thumbsup:

@hellyflyer I have recorded video with commentary :rofl: but it has lots of background noise, so i have suppressed that with music. I will add a page in the website with measurements and stuffs

@arun I was very very very tired man. I just hurried the build and the flight, the frame that i have built is not very accurate. The arms should be half of the length of the quad (incase of H quad) hence it was not very stable

.

video is great  :thumbsup:, just put detail pics of connection . (motor plug n board)

Motor connection to board can be found in this post (http://www.rcindia.org/multirotors/a-small-diy-quad-within-everyone's-budget/msg140836/#msg140836)

Satya bro, I have two questions,
1. Any idea if i can build a Hexa out of this board?
2. Will this board bind with a 9XR?

Video updated with comments dont disable annotaions :giggle:

@veloci:

Hexa: No board supports only 4 motors.
9XR: not it supports only the radios listed in the page 1.

You can use 9xr if you are using turnigy or fly sky module...

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Thank you both.

Dear Satya,

Placed order online. (the last one in your stock i believe...)

How can i transfer the money in NEFT...Sorry i normally to fund transfer from icici . Is it the same?...

Shivela, after you placed your order you might have got a mail with order confirmation and bank details. Use that account details to do a NEFT transfer from you net banking.

Thanks satya,

I am on it. Will confirm in 10mins...

Dear Satya,

Seems there is a problem in ICICI netbanking...ICICI bank site says they face some fluctuations in their service...
Can i change the mode of payment to CC now?... I am trying to get kit by tomorrow...  :-)

sorry typo error... I am trying to order the kit by today itself and get it delivered tomorrow with DTDC plus

Place new order, i will cancel the previous one. And it will be shipped tomorrow not today.

Dear satya,

Account registration successful. But seems there is a problem in ICICI bank in the transaction page..
Can i change the payment type to credit card now.. Or should i delete the order and recreate the order...

Please block this kit for me(hope this is the last kit available in stock) .. I will complete the payment by today...

Great. I Will do that...

Dear satya,

Created new order and payment made through CC.
Thanks for the support.

Received the kit today.. Which of the motors are CCW?

All motors are same rotation, just reverse the connection for 2 motors.

how to reverse and which one ???
details please !!!
connections of connectors .

Motor connection to board can be found in this post (http://www.rcindia.org/multirotors/a-small-diy-quad-within-everyone%27s-budget/msg140836/#msg140836)

You have 4 motors, all 4 have white and black wires.

White is +ve and Black is -ve

so for 2 motors keep same and reverse the connection for other 2 -ve to White is and +ve to Black.

but i am asking on white connector .
not clear in video .

That is called as MICRO JST connectors, you have to use some extra wires. I would request other members if they can show the picture cos i dont have those connectors now :(

@RAZZER check this video it is different connector but of same type.

https://www.youtube.com/watch?v=54hq2s3kTJk

this one ??

Yaar don't get confused... I soldered it directly... ;)
Make it a scratch build guys.,  jst plugs and all are professional builds.. ;)

@arun : lol.. keeping it simple! :P no bakwaas! ;D

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@razzer yea thats the micro jst, i have provided female connector with its pins if you look closely. You just have to solder wires to them.

@arun bro you are right, that was my plan but i knew this would come up. hence i was forced to add those connectors in the kit too. If you see the RCG thread the cost mentioned includes motors controller and battery only.

@aniket i guess thats what sratch build is all about 'keeping it simple' ;) :thumbsup:

Soldering will be a good idea but i have provided the necessary connectors for you to use it.

dear satya,
got the kit yesterday. assembled kit and the total weight comes to 37grms with battery.
 
It is not climbing up. Verified the connection and CC/CCW configs...

If i off load the battery weight is climbing.. Is it my weight in higher side?...

37 Grams is good, did you fully charged the battery? Share some images build logs :)

Dear satya,
Thanks for the reply.

Will post the image once reached my home.
Do you have spare motors available with you?. need to order it.

In my last try yesterday night i have accidentally pulled off the wires making one of the motors useless.
(opened the motor and tried soldering it but not working in full load)
 

Shivela.. my quad weighs 32gms and climbing good.. still trying reduce the weight for good performance.. recharge the lipo it will climb up..
Make sure all motors are mounted at an angle 90degrees..

Sent from my Canvas using tapatalk 2

Thanks Arun,

Will get some help from you once i posted the pictures...in the evening...

@shivela Yea I have few motors, props and something new :D for sale. Will soon add it.

@arun very good point mentioned, motors need to be mounted at 90 deg angle. The guys in RCG have made a 60 CM quad using this kit and it weighs 27.5Grams w/battery :headscratch: :headscratch:

How they do it man? their quads are also mostly under 900 grams mine always goes more than 900 grams :banghead: :banghead:

They use gorilla glue, which is supposed to be much lighter than hot melt glue and for the motor mounts, they use epoxy and paper..

Do we get gorilla glue here? whats its name?

Unfortunately we don't get gurilla glue here....not that I know off....but pidilite makes a PU glue that foams when moisten, it is generally used bu auto body workers....but I haven't used it so can't say much

Why can't we use fevikwik for this kit? its very small and i am sure it will provide strength to hold all stuffs together. What say?

Yeah ofcorce......I guess no one pointed that out.....we were busy coying rather than using our own brains :D

:giggle: :giggle: actually with this kit we all should make something of your own. It would really be fantastic to see something different :D

Dear Satya,

I have used the Fewikwik only for the X arms and 4cmx 4cm balsa square board at the center.A bit of 5 min epoxy for strength.
Used 4 small sketch pen caps as motor holders and used 5 min epoxy for sticking it in the end of X arms.
Total time took 15 mins to complete.

I am waiting for my quad to up and running. Then will try out Coro (triangle shaped) to built X arms. Hope even Coro is fine for the center square.

Cool :) balsa is good actually i have heard that its very light weight. Do share image or build log. very good idea with the sketch pen caps. I have order some motor holders also (will be added for sale soon) so many guys who has problem find a way to fix the motor they can use that.

@satyagupta can these motors be put in a motor mount with a large gear and used to swing a larger prop? like on the other micro quads online.... ?

Sent from a potato using a lamp

(http://i1279.photobucket.com/albums/y529/aniket210696/2013-06-07193134_zps29feeb6c.jpg)

here's my basic frame... 15cm motor to motor and coro top

PS: I finally figured out how to post pics with tapatalk ;D;D

Sent from a potato using a lamp

Looks good..

Hey everyone,
I just completed the quad but it is not taking off......it just lifts like an inch or two off the ground, that too on full throttle and then swiftly banks towards left and then flips......the AUW is 27 gms......can someone help?

Bilal bhai lipo fully charged??

Haan bhai.......I even charged it twice to be sure

Check  props and motors whether all r same and have good thrust

check alignment of board... is it flat and oriented properly?

So today i will make one more, that will give me idea how does this works. And also you guys can see it if you want to.

Can someone please point me out the orientation of motors on this thing?.....whaich one goes CW and which one CCW

Arun bhai, a couple of close up pics of your quad would be really helpful

Can someone please point me out the orientation of motors on this thing?.....whaich one goes CW and which one CCW

Arun bhai, a couple of close up pics of your quad would be really helpful

I just assembled mine using this pic for reference....

Bilal the pic posted by veloci is the key.... my orientation is the same as this.. make sure the board parallel to the ground and all motors are spinning in the right direction..
The chances are less but still check for any vibrations in the motor or arms.. will work for sure.. today I am making another frame and will upload a build log.. :)

Sent from my Canvas using tapatalk 2

Here is my build of the Micro Quad.
Used double sided tape, Hot glue and Cyano to hold things in place.
AUW is around 40g (Weighed it on a manual kitchen scale).
Lifts off at around 90% throttle, must be heavy. Charging the lipo now to give it another go.
Frame built using 3mm CF rods and Laminate as the skewers got warped during storage  :(
Centre plate - 1.5inch x 1.5inch.
Motor to motor distance - 100mm.
Used some pen caps to hold the motor as well as to serve as landing gear.
Will try to bring the weight down in my next fame design  ;D

Make it below 25gm for a 100mm frame...
Mine was 280mm frame.. and weighs approx 30gms
Used only super glue for the whole build.. lift up around 50-60% throttle


Sent from my Canvas using tapatalk 2

 :thumbsup:

Fantastic veloci.

Bilal bhai you have any motors rotating any direction but only thing to make sure is diagonally opposite motors are rotating in same direction.

And one thing this will lift off ground at 40% or more throttle. So i my guess is lets give 50% throttle to start with. If you have mobile charger adapter with usb port, then please use that for charging. Its better to use than PC.

+1 satya, now I know what went wrong..........I had diagonally opposite motors rotating in the opposite direction, thanx

veloci: make it a bit lighter sir, this thing has an overall lift of about 46-48 gms.......spare some for pulling of loops etc :p.....use drinking straw for holding the motors....and foam plate (2mm depron I guess) laminated with cardstock as the central plate.
Am using frooti straws, the white colour ones as diagonal arms...they work fine

Great bilal bhai :) its working now?

Thanks a ton! Just got the kit.

The motors are refusing to turn over.. :( I checked all the connections and the board binds properly even..

tried connecting motors directly to lipo and check? motors working?

Thanks everyone!

Satya bro,
I rerouted the motors as you suggested and it had great improvement over the quad....the swift drifting I was complaining about is gone, but it still isn't lifting.....it barely leaves ground on full throttle
btw, what is the battery voltage on full charge?....lemme check that too

regards
Bilal

hii,what is the size of the props used are they 7*3.5 size.

Bilal, what is the AUW? The lipo reads 4.2v on full charge. BTW, the props are 51mm in diameter.

Veloci, the AUW is 32gms, I dunno why this thing refuses to fly after all my efforts :(
one more thing....I've resently notised that one of the motors vibrates considerably on full throttle, do you think it could be an issue?....do I need to balance the props?

Veloci, the AUW is 32gms, I dunno why this thing refuses to fly after all my efforts :(
one more thing....I've resently noticed that one of the motors vibrates considerably on full throttle, do you think it could be an issue?....do I need to balance the props?

@bilal can you post a picture of how you have mounted the motors?

Sent from a potato using a lamp

Almost finished. Ready tomorrow.

@Bilal, Posting a clear, close up pic should help in troubleshooting, as aniket suggested. My quad weighs around 40g but still manages to fly at 90% throttle. Check the prop directions again.

VC sir....waiting eagerly for yours...

Thanks Veloci. I hope I don't disappoint you.............and myself..................

Satya - just a suggestion - Try and include pre soldered micro JST connectors with 9 inch black / red wires in future. That will make the assembly a LOT easier.

@Satyagupta: Yeah the motors work fine, but there was some stray solder drops on the circuit board.. I wiped them off and bound the board(solid red light), but the motors don't work.. Is there any arming procedure that I must follow to let the motors spin up? I am using the TH9X Tx. Tried reversing the throttle channel, still doesn't work.

hiiiii alll......... :hatsoff: :hatsoff:   here's my version of satyagupta's DIY quadcopter......... this is my first quadcopter... never build or flown any quad before... ;D ;D   took one hour to complete the total build and fly it. since i got all the bamboo sticks as pieces so i used thick straws to build the frame and a gear from a 3.5ch heli as the base plate. motor to motor length 12cm and all over flying weight is 24grams.... its flying smooth and stedy.. no vibrations no drifting... within 40% to 50% throttle it takes off the ground... its very enjoying flying it...    ;D ;D
 so i named it "BEE" ........... :giggle: :giggle:
here are some pics of my BEE......  video coming soon......   :hatsoff: :hatsoff:

and some more pics...........    sorry for bad quality of pics since i have taken photos using my mobile............ :bow: :bow:

Dear satya,

Can you please list down the sapre motors in your shop?... I am waiting ....

I did a lot of digging last evening and found lot of information.

The motor to motor size of the for this kit frame should be less than 15cm for it to work. The motors that come along with the kit has RPM of around 18000 - 22000 which is good for a quad which is 15cm motor to motor or less.

For quad size 15cm - 25cm motors will be different. I will soon get then as spares you can buy and try with them. Actually the motors that i had previously were the high RPM motors but the only down side was the shaft size. it was 0.7mm which would need some glue-ing to do with the props for it to work but i want to get motors which is useable right out of box.

@Shivela products added please check :)

@VC sir that was what i wanted. Stupid supplier did a mess of the whole order :banghead: :banghead:

@Bilal bhai what is your motor to motor distance? try to bring it down to 15CM or less. (to be precise if its around 12cm then it would be great)

I would get the high RPM motors soon but i would do a good research after getting them. I have also got some very nice motor holders if you are finding it hard to create holders for motor you can use them (image attached)

FYI spares for sale soon will be added :

Motors (http://www.quadkopters.com/product/716-coreless-dc-motor-high-speed-x-4/?utm_source=FORUM&utm_medium=DIY_THREAD&utm_campaign=RCI)
PROPS (http://www.quadkopters.com/product/udi-props/?utm_source=FORUM&utm_medium=DIY_THREAD&utm_campaign=RCI)
V939 board  (http://www.quadkopters.com/product/v939-controller-receiver-board/?utm_source=FORUM&utm_medium=DIY_THREAD&utm_campaign=RCI) (very limited stock)

EDIT: Link added

you are right satyagupta... my first trial was with a 25cm frame but it denied to leave the ground but now with a 12cm frame it flies smooth and perfect.....

Satya bhai,
noted down your suggestion....the motor to motor distance of my quad is 155mm precisely.....so that can be a problem too....will sort it out then tell you.

P.S.: I am so damn jealous of the guys who were ably to fly there quads in first attempt....lucky guys.......am practically glue to this thing since yesterday and still it refuses to fly

Jayant sir, how did you mount the motors......your motor holders look good, I want something exactly like them...any suggestions?

:thumbsup: dont get dishearted guys, even i was very eager to make the 45CM quad using this kit. I will soon get the high RPM motors which you can buy as spares.

bilal bhai i dissected left over straws and wrapped it around the motors and used feviquick to join that to the arms.....   bilal bhai dont get dishearted even my mind got blasted while making this quad since i have never build or flown quad before... any doubt you can ask me.......

Bilal bhai just wait for sometime i will coming up with new 5 mins frame build log :giggle: motor to motor distance 12CM

Build log for a 10 mins frame.

Motor to motor distance less than 12 CM.

Time taken to complete: Less than 10 mins :thumbsup:

Step1: Cut the sticks as per required length i cut 12 cm x 2

Step2: Cut notches at the center of the sticks so that both can stick.

Step3: Glue both the sticks together using the notch.

Step4: Use some nylon thread to strengthen the join.

Step5: Add some glue on the thread

Step6: You can stick V939 board on the arms using some double sided tape

Step7: Cut a notch in the arms for the motor (7mm)

Step8: Fit motors in the arms using a strong rubber band.

More pics:

Step 5 and Step 6

Last set of pics:

Step 7 and step 8

satyagupta awesome dude.....  fly with this 12cm frame quad will have very quick response.. and if we could use fruty straws then the frame becomes much more lighter than bamboo stick frame...... i have tried both but straws satisfied me a lot..........

Right jayant, may use foam to make frames and to wrap them in paper and some coating of water+glue.

Many use coated very thin copper wires to make it more light.

I used wire from a old hard drive IDE cable.. that's the best...

Sent from a potato using a lamp

Dear Satya,

Placed order for motors & Spares. NEFT scheduled tomorrow....

@Shivela Cool I would be out tomorrow so i will be able to ship it on Tuesday :thumbsup:

Guys just an update

The total thrust generated by the motors supplied by the kit is 35 grams, so try to make the AUW under 32 grams.

Which means the motor to motor distance should be less than 15 cm for best performance my suggestion is 12cm :thumbsup:

03:17 hrs. Frustrated :banghead:

Not getting any lift. Motors 3 and 4 are not providing ANY lift at all. Motors 1 and 2 are working fine.

Someone please clarify these points:

1. Motors 1 and 3 are supposed to spin Anti Clockwise and their props are identical.
2. Motors 2 and 4 are supposed to spin Clockwise and their props are identical.
3. Props revving up at Zero throttle and trim at lowest on a HK V2 Tx - why?

 :banghead: :banghead: :banghead:

Vc sir the orientation is perfect... if the props are reviving when battery is connected(before binding to tx) then that channel might have some problem... try any shorts in the soldering..
And check whether the speed is increasing or not of that particular motor  while throttle up.. if I am correct that motor will be spinning in a const speed even when the throttle is increased...


Sent from my Canvas using tapatalk 2

VC sir whats the motor to motor dimension?

Any chance of putting up a video? can you switch motors (working and non working) and check if motors are found to faulty i can send a replacement :)

VC sir, you need to trim the throttle down and then bind it. Faced the same problem with my CT-6B.

What about the landing gear? How did you make them?

I guess he took that from 3.5cha heli..

you are right satyagupta.......   veloci sir i used the landing gear of a small 3.5ch heli and broke that in to two part and attached using feviquick...

Facing binding issues with the HK V2 Tx. Sometimes it binds and the Quad lifts off, sometimes the red light remains steady but the motors do not power up and yet again sometimes the light just keeps flashing. Can someone please walk me through the step by step binding process?

VC sir, here is the binding procedure that I am following with my 9X

1. Connect thr battery to the FC, a red light will flicker twice and then goes off
2. After about half a second, the red light starts blinking again, now switch on the tx while holding down the bind button. Make sure the throttle is at zero position.
3. Wait for the blinking light to go steady, now switch off the tx
4. Switch it on again with throttle stick at zero position, if the quad motors rev up for just a couple of miliseconds, then the binding is complete, otherwise repeat steps 2 and 3

see if this works for you

Tried exactly that. It hovered 6 inches off the ground and now it has gone back to blinking at half a second intervals.

Then I don't know what is wrong sir, btw...how did you resolve the motor issues you were havin?

Regards
Bilal

No idea. The board seems to have a life of its own. Last night I had one set of problems and went to sleep with that, at least the binding was successful. This morning a completely new set of problems!

mine is called the "satyaquad X"

I give up. There HAS to be something wrong with the board. I've wasted 2 days behind this. Would have completed my 900 mm Hexa in this time.

@vc it seems to work fine with my 9x.... why don't you try binding with a 9x instead of the hk? maybe there will be a different bind procedure for both....

Sent from a potato using a lamp

VC, the HK 6ch V2 (and the 9x V2) has a mind of its own. It will start binding automagically one fine day and will lose it again, they are both good transmitters but there's a cheeni tadka on the RF module. I've moved onto FrSky because of this binding-unbinding mid air twice and the LED going boink boink...

Yes there is one thing that can help and that would be your Floyd LP/CD...Leave them kids alone...

vc sir try to full charge your tx and give it a try....  mine was having same problem today but after full charging the tx i got it to work.............

and guys use the default settings of your tx to work properly with the quad.... if you use heli or other mixing settings then motors wont move and you wont be able to fly your quad.........

@VC sir my appologies i think i should have mentioned the bind process at the start of the thread. But i was not sure the process which i mentioned you over phone was correct. Hence did not added it.


Just one question "Why ?" :headscratch:

@bilal bhai any update on your mini bee?

@satyagupta because you manufacture it and sell it...  but satquad X sounds better :P

Sent from a potato using a lamp

FINALLY!!! And its all thanks to all of you trying to help me out. Especially Satya - just required one call to him and listening to some idiot proof instructions. Will soon post these instructions lucidly, soon. :bow:

Anyway here she is. AUW 36 grams, Motor to Motor distance 140 mm. Needs so shed some more weight.

Sir, Amazing KINDERJOY idea! Super colour scheme!
How did you fix the motors sir?

Motor mounts were made out of disposable e-cigarette filters. :giggle:

are you posting a flying video? ;D

Not until I can figure out a way to lose 5 grams.

The happiness was short lived...............

It lifted off at full throttle and then fell back. Switched off and charged the battery. Now the moment I connect the battery, motor no.3 starts spinning at full throttle. Red light blinks thrice and goes out, motor no.3 keeps spinning. Does not bind, other motors are dead.

Kaput! :banghead:

VC nice built there.....some tips where your quad can loose weight....
1. those seems to be bambo skewers .... heavy change to balsa or straw
2. just have a coro base for FC board
3. remove kinderjoy cover ( though you've colored it well)
4. Just have a ring for motor holder ... the butts are way too big...

hope to see flight video soon !!!!!

@VC that reads wrong.... :giggle: anyway try removing the legs, and the shell... also see if you can find something lighter than e cig butts...  i found i can easily slide my motors into those fat straws you get when ou order a KFC Krusher... :P

Read #242 edited. End of story.

@VC sir build looks excellent

@aniket neither i manufacture nor it was my idea, i just wanted WE all should also try this stuffs hence got it here for US :thumbsup:

Guys any idea how can i edit the first post?? i want to put in lots of new updates :headscratch:

Satya thanks - now lying destroyed - unfortunately. Also thanks for your kind offer.

Satya bhai, I am still struggling with motor mounts.....one of my motors vibrate voilantly , dunno what the cause is.....any ideas?

Hmm try to run motor with out props and check. Interchange props and check. Hold the motor in between your finger do you feel vibrations? with and without props.

Nice one VC.  {:)} {:)} {:)} {:)} After Having Kinder Joy Chocolate you are getting nice ideas.

This is one idea, I am going to blatantly copy from you   ;)

Dear Satya I have a querry.  Will this Tx bind with your V939 board?

(http://www.hobbyking.com/hobbyking/store/catalog/coaxheli-sub.jpg)

VC, the KJ canopy looks supersome. Looks like the classic VW beetle with rotors :D. And the paint job is very fine (is that done with the new sprayer). Sorry to know it fell like icarus but I'm sure you will have it up soon.

@sundaram sir not very sure

Which tx is that?

Thats a Hobby King 2.4 Ghz Coaxial Micro Heli with four channels TX

Sundaram sir i dont think you can able to use that Tx..   :(

lets see when i get the board  ;D

dear satya,

hope the motors shipped today.
eagerly waiting...

@shivela when did you do the payment? you did not informed me about it? :( will get it shipped tomorrow morning :salute: sorry for the delay

Hi sathya,

I am looking for a 8mm Diameter brushed coreless motor (length 20mm) can you help me with it

Except Arun, who has used his own motors, no one has been able to post a video of a successful Quad using this kit. That after 259 posts, 11 pages and 40 days. Isn't that strange? ???

Satya shipped me a new board (Gracious F.O.C. replacement) and using that I built my second Quad today. M to M distance 14cm. AUW 30 grams. Recharged the battery 3 times - it reads 4.2V. Motor/Prop orientation as prescribed - JUST REFUSES TO LEAVE THE GROUND. :banghead:

What am I doing wrong?

P.s. Satya, did your supplier send you the correct motors/ props combo?

Bilal, Rahul Vyas,Razzer, Veloci, Aniket, Jaspreet Guitar, Arun, Abhay, Shivela, LastRites,Jayant Pradhan and Satya - any feedback/ videos?

Using the First board, one motor used to start on it's own with the transmitter off. I thought that I must have shorted something with my careless soldering.

Ordered a second kit. Assembled it today in the evening.

I took special care this time, checked and re-checked everything at each stage. The quad on completion lifts with slight difficulty at about 60-70% throttle. However, it's slightly crazy to control. Not something that I'll be confident in flying within my house.

The only problem that I noticed with the quad this time is that the motors get very hot. It's almost impossible to touch them after a few minutes in air. The glue gun that I used to hold the motors too started to give away.

Not very sure of how long these motors will last, given that they reach such high temperatures in a couple of minutes!  :(

PM sent

VC, measure the current at full throttle.
What is the power ? Follow the rule, 5 gm/watt is the thrust/electric power.
1.) Use burnt Copper choke coil wire for motor to board connection.
   Thin wire will reduce power and thick wire will increased weight.

2) Use thermocol based frame making rigid by cellotape or broomstick and thread.

I have rebuilt my quad using straws and coro. Takes off at 50% throttle now. Motor to motor distance is 120mm. Downside - unable to control it properly. However, i haven't checked if the motors get hot or not. Wil do so asap.

@VC sir the motors and props are the correct fit, motors are suited best for the mini quads M2M size less than 150mm (some cases its required to be less than 120mm)

@Jaspreet About motor getting thats common, the other mini quads that i had (ladybyug, mini parrot drone and hubsan) they all get got. And thats common for these motors.

About the kit, the only thing i missed was need of HIGH RPM motors, which is required to build if your quad is more than 150mm M2M ideally with the motors and the props you get a thrust of 32grams which should be good if your quad is less than 30 grams.

And it should lift off the ground.

I have placed order for HIGH RPM motors today bit expensive for me with $ so strong against rupee :(

oh my quad has been flying nicely! ;D first i made a 12cm with the bamboo skewers, where it would take of with 80% throttle, so i made another frame with just 10cm diameter, with straws and coro, ow it takes of at around 35%.... ;D
it is stable, but now and then it tends to oscillate, a quick stick input usually fixes that...

i use it to play with my cat... she keeps jumping into the air to catch it and i just take it higher....

it is very responsive, but one thing i noticed is that i can pull only about 1-2 minutes of proper flight time, before it refuses to climb...
also, after about a minute or so, when the quad yaws, it drops altitude suddenly.... this is not noticed earlier...

..and it does a very nice flip, where it just barely loses altitude...

one prop got a little lose the other day, it kept flying of the motor shaft, sending my quad to the ground... so i put a little threadlock inside it, and now it holds fine...

will be posting a video soon... just want to edit it...

sincerely
aniket

I tried EVERYTHING. Satya sent me a brand new board, I bought 4 new motors. All to waste. Weighs in at 30 grams and keeps spinning on the floor like top. JUST REFUSES TO LIFT. :banghead: :banghead: :banghead:

All of you who are getting their Quads to fly @ 32 / 34 grams...... :hatsoff: ??? :headscratch:

vc sir as i can see in your above pics, motors are spining in wrong direction...  i mean propellers are connected in wrong way......  make it right and give it a try... refer this pic. ...........

I have tried interchanging the props too - nothing worked.

are the motor spining in right direction?? and is all motors are giving down thrust ???

Yes all motors are spinning in the correct direction. As a matter of fact, with the earlier board and motors the Quad was at least lifting off the ground at full throttle. With this new board and motors, it just keeps going round and round on the ground. Battery is fully charged @ 4.2V.

whats your motor to motor distance?? i think its more than 12cm.

Oye, forget it yaar. The earlier Quad had a M to M distance of 140 mm and weighed 36 grams - it lifted off. This one has a M to M distance of 125 mm and weighs 28 grams and does not lift off. Lets not split hairs here. There is some other problem with the board / motors / props. As I said, forget it. This has been a colossal waste of time, amongst other things.

@vc sir here's a quick suggestion... try making a frame with 4 frooti straws.... then but a dab of hot glue at the ends and stick the motor directly.... don't bother with a motor holder... use the thermocol of a Styrofoam plate as a base for the board... don't bother with legs etc, just the essentials...

Sent from a potato using a lamp

@VC sir even i dont know whats going wrong and where for you :( Let me know how can i help you...

You have done more than enough. No complaints.

Hi team,

here is my quad. 12cm motor to motor distance. 33grms total weight.
Working as expected...TX V929...
climbs up at 50 to 60% throttle...

will post more pictures....
for now here my first video.....

Thanks satya for your quick support for sending spare motors....

http://www.youtube.com/watch?v=UBINYrFdOtY&feature=youtube_gdata

Trying to reduce the weight now....

awesome video dude...... i will also upload my video soon.......

Satya, I hope this makes you feel better.

  {:)} {:)} {:)} :banghead: :banghead: :banghead:

Fantastic work shiv, i think can you reduce more weight. {:)} {:)} i have added your test video one the product page (in the videos tab) :thumbsup: :thumbsup:

@VC sir yes it does, i never had any doubt about this kit but i just cannot understand why you are not able to get it leave the ground :banghead: :banghead:

There is just one last thing that I want to check. Wish me luck.

Thanks team,

VC sir,
I have the below list of problems when i started....

1.Quad was not climbing up...(Motor to motor distance is 30cm...and weight 36grms...)
       Sol: As satya confirmed that the motor is for < 15cm frame i reduced to 12cm motor to motor distance and it worked without any issues.

2.Quad was rotating in the ground clock vise and not climbing up.
       Sol: One of the motors was not in 90 deg.
             

Good work Shiv :thumbsup:

All the best VC sir, check point 2 said by Shiv

Congratulate me and have a good laugh at my expense - she is flying. Too ashamed to admit the screw up. My apologies Satya with reference to my earlier post/posts. SHE IS FLYING!

The reason for the Quad not lifting up with the new board was because all the props were spinning the wrong way. Simple desolder and solder again. Thanks to this project, my soldering skills have improved substantially.

 {:)} {:)} {:)} {:)} {:)}

Now i am feeling more than better :D any video sir?

Hang on, still working on it. The motors are not perfectly aligned at 90 degrees. She is off the ground but running away.

Wonderful VC sir,

Eagerly waiting for your video....With the kinder joy cap..

hmm... maybe I should upload video of it flipping

Sent from a potato using a lamp

Yea Aniket please do that...

Shivela sir,
Please post a couple of pics of the quad too, am still not able to mount the motors properly... Quad lifts but banks towards right and flips.

Bilal what are you using to mount the motors? any pics?

Sayta bhai,
Ive tried everything from pen caps to straws to old credit cards..... But nothing worked

Dear Bilal,

Will post pictures tonight as i am not having it right now.

Satya has the pictures updated in his store.
I am using the satya's method, sketch pen caps as motor holders.(buy the small sized cheap sketch pen set...I bought 12 sketch pens at Rs 9.50 at Saravana stores here in chennai.)

anyway i will post some close pictures of mine tonight.

See if it banks and flips that means one side of the motor is spinning faster than other side. Is the frame well balanced?

Satya bhai,
frame is well balanced, but the board is not exactly parallel to the ground due to the battery wires sticking out on the bottom..... I've put double sided foam tape but it still isn't level, can this be a possible cause?

yea it has to be parallel to the ground.

Do one thing, add some sided foam tape only on the corner of the controller. Just the corner not at the centre. Or just add at the centre not at the edges.

What will happen is, the wires that is going to the battery will have some space. I hope i am clear to you :headscratch:

Yeah you are absolutely clear....... Btw, is there some cg thing too in these quads?
 
Sorry am new to this, so don't know much, that'swhy bugging you

Bilal every flying object should have a cg point... :)
And you should maintain that to fly it well...
But the CG is not the problem in your quad...
Check any of the motor is spinning slower than others..
Hold the quad using your hand and increase the throttle now just feel the wind and make sure all the props rotating evenly... Make sure keep the quad parallel to the ground as well as the control board..
:)

woohoo.... smashed my quad into the wall.... :'( luckily board and motors are fine... can't say much about the frame though...
it flipped and then headfirst into the wall... now am building a new one... luckily nothing broke... :)

Yea there is a CG the controller center has to be mounted at the CG.

And you are not bugging anyone bilal bhai :thumbsup:

Dear bilal,

Here is my pictures. ..

(https://picasaweb.google.com/m/viewer#photo/104952038913954779944/5890676814209564673/5890677304637679138)
(https://picasaweb.google.com/m/viewer#photo/104952038913954779944/5890676814209564673/5890677018155822162)
(https://picasaweb.google.com/m/viewer#photo/104952038913954779944/5890676814209564673/5890677510809830482)
(https://picasaweb.google.com/m/viewer#photo/104952038913954779944/5890676814209564673/5890678385055592834)

Shiv why dont you use a image hosting? like postimage.org

Shiv those image links are good but post them using insert image tab above like the example below


img]here[/img

Sundaram sir,

I used with img tag only. But not showing from picasa I think.

I used picasa to give a high resolution picture.

Satya will try postimage as well.

Postimage..
(http://s15.postimg.org/8ielossq3/20130618_100058.jpg)

Picture 2
(http://s23.postimg.org/6p43smf2z/20130618_100000.jpg)

Picture 3
(http://s24.postimg.org/48tk6tz8l/20130618_100021.jpg)

Thanx Shivela sir.....those pics are really helpful

Hey everyone, here is some good news,
my quad finally flew, Satya bhai you were rite, the motors were not aligned properly...... The AUW is little less than 30gms including landing gear and battery... And motor to motor distance is 100 mm.
This thing is a blast to fly, really twitchy, and a hell lot responsive than any other craft I've flown yet. There's nothing like pin-point hover, it constantly keps moving here and there, but is still is fun to fly.

Thanx everyone, specially Satya, Arun bhai and Shivela sir.... Will post pics in a while
 
cheers
Bilal

Bilal that is a real good news.. will be more happy if you can post a video of that.. :)
;D;D

Sent from my Canvas using tapatalk 2

Great news Bilal bhai post pics, vdos if you can jaldi.... :~

atlast its flying for everyone :D

Hey satya bhai,
I hit a small bush yesterday while I was flying and somehow ripped the wire of one of the motors :(
so I tried replacing it with one of the motors of syma s107 that I had lying, and it really was a pain in the a** because the motor's shaft is of 0.7 mm dia and props have a 1mm dia hole, but neways I somehow managed to attach the two and this motor prop combo is way better than the previous one.......... Thaought I should tell others so that they may try too :D

btw, do you have props that can work with these motors?... With 0.7 mm hole diameter?

Regards
Bilal

Bilal bhai that was the motor that supplier sent to me at the first place (which i got replaced) so 0.7mm shaft was the reason :giggle:

Its really a pain to fit the current props on the S107 motor. And these props have 1mm hole :(

If you are planning to buy spare motors then wait for couple of weeks, I am getting few powerfull motors which will be good with mid to large size quads ( around 250mm to 350mm) :thumbsup:

Bilal,

Can you also share your FAT reducing secrets of your Quad?.. (< 30grms)
Some pictures if you can please...

Mine is about 34grm.

Motor+prop = 10.4grm
Lipo           = 10grm
FC             = 3grm
pencapx4    = 2.5 grm
Frame         = 8grms
               __________
                   34gms




 

Shiv Sir, the key here is the frame and motor mounts, instead of using the bamboo rods send bu Satya, I used 1mm thick bamboo strips  from a table mat, you can get similar strips from bamboo fans (folding ones used by women folks) etc..... And for making a platform for the FC, I used the foam plates, just stick two pieces of bamboo flat 100 mm long on top of each other and stick a square piece of foam on top for miking the platform.
Motor holders are made from caps of use and throw pens you get at 12rs a pack at stationary store... Just avoid hot glue, use ca everuwhere, and epoxy for motor mounts

Bilal,
thanks.
to the coincidence this Saturday i got the table mat of bamboo sticks from china bazaar for Rs15 for the same purpose.
will try that out.

 

Arun had no luck with the hobbyking micro heli tx hence went ahead with the purchase of Fly Sky FS-T6 from Satya. I am glad I did not go ahead with the purchase of Fly Sky CT6B. Unlike a Turnigy 9X this one though 6 Channel, the features of programing are very nice and very very user friendly. it has nice features for Heli setup too with different swash setup, pitch curve and throttle curve.

A very nice 2.4 Ghz radio with cool, easy to use features.

(http://www.quadkopters.com/wp-content/uploads/2013/01/flysky-fs-t6-1.jpg)

:salute: Thank you Sundaram sir for the review. Can you please write a review on the product page as well

@Bilal bhai what exactly is CA??? can you tell its local name or any product?

Dear Satya,

It is Cyano-acetate. Available everywhere from stationary to hardware shops...

any local name?

Anabond 202
fevikwik
super glue....

and a discussion thread....

http://www.rcindia.org/tools-materials-and-building-techniques/locally-available-epoxy-andor-caglue-for-foam-planes/50/

Ahh thanks for the link Shiv :salute:

sundaram sir expecting a masterpiece quad from you soon(using the v939 board).. :)

hi brothers ,
i had gone for vacation. now  i have completed the quad .
but the quad on does not fly , it flips on the spot as i increase the throtel .
i use flysky 9ch tx.
please suggest me a solution .

hey razzer, check the usual suspects... wrong prop rotation, wrong soldering to wrong points, rotation direction of motors, angle of motors, and position and angle of fc board... checking these usually solves the problem...

hope it helps!
aniket

Sent from a potato using a lamp

Started my second built. Weight apx. 28grms.





Sent from my GT-N7100 using Tapatalk 4 Beta

All the BEST :)

Sent from my GT-N7100 using Tapatalk 4 Beta

(http://img.tapatalk.com/d/13/06/24/3ade9e2u.jpg)

Sent from my GT-N7100 using Tapatalk 4 Beta

Small aquarium pipe attachment 0.4gms
3mm stick
Sketch pen caps
So far 4.2gms..

(http://img.tapatalk.com/d/13/06/24/asyhynug.jpg)
(http://img.tapatalk.com/d/13/06/24/nyvu4usa.jpg)
(http://img.tapatalk.com/d/13/06/24/usuja5y6.jpg)
(http://img.tapatalk.com/d/13/06/24/sure2utu.jpg)
(http://img.tapatalk.com/d/13/06/24/zeta5asa.jpg)

Sent from my GT-N7100 using Tapatalk 4 Beta

This looks more neat and sturdy... thanks for the great idea...
Try to find an alternate for motor mount I think sketch pen caps are heavy.. :(

Sent from my Canvas using tapatalk 2

you are right. each cap is about 0.58grms...and total 2.4grms..
Any suggestions arun?...

Shivela, i used heatshrink on the motor and then attached it to the frame using cotton thread and CA. Its very light yet resilient. Cheers!

thanks veloci,

Can you please provide any pictures?...

Good idea veloci, any images?? it would really help us a alot :thumbsup: and CA = fevikwik? :headscratch:

i will post pics soon....
@satya, CA = fevikwik = anabond = superglue  ;)
FYI
http://www.anabond.com/cyanoacrylate_1.htm

@satya bro, check out the images in this thread...

A very quick update:

I have received 720 motors which i mentioned earlier which are more powerfull than the current 716 motors but are bit costly. I will test them out and will try to share video, will not start selling without testing.

Also have got a new controller board other than V939, there was a product Mini Parrot Drone (http://www.quadkopters.com/product/parrot-ar-drone-mini-quadcopter-rtf-2-4g-4ch/) which i found to be very very stable. I have managed to get the controller/receiver of the same.
:headscratch: I was wondering why in RCG thread they did not mentioned about this controller as it is more stable than V939, then i got to know that it was bit pricey than V939 which was not make it possible to be in the $18 target. I have got them to test, will put them on sale too. But first i will test and update the results :thumbsup:

Satya bhai, all the pieces seems to fit in place now, specially after shiv's awsome idea........all we need now is a decent motor mount and we're done.

On a different note, wot's the cost of the new FC you were talkingg about?

Cheers
Bilal

Price i have not yet decided but it is bit expensive than V939.

About the motor mount i have a plane to make using paper i will try that out tomorrow and update how it went :thumbsup:

For motor mount you can use medical cloth bandage and once u have the right angles, add super glue as it will seep through and stiffen up the entire bandage and make it solid .

But sticking the motors directly using bandage and heat shrink will be a good idea but a crash will ruin the motor.. using a separate mount and install the motor inside that will save that motor...

Sent from my Canvas using tapatalk 2

Yesterday i made 2 mid size quad with the new set of motors 720

You can see the attached image.

One of the quad is 250mm and another is 300 mm. Both lifted of at 20%-30% of throttle but i am not able to get stable flight :banghead: :banghead:

i found following reasons:

1. Motors were not at right angle.
2. Receiver was not flat.
3. Due to vibration, quad used to either flip of move to one direction.

If you guys want i can put a video of unstable flight video :giggle:

Satya, what did you used to mount the motors in the second pic (300mm quad)

Guys here is my new build may be 4th or 5th always got it lifted but yaw was the problem, Now its all fine flies perfect,stable and even yaws perfect..  >:D >:D >:D
Now to the case of AUW
Without battery it weigh 17gms
i used two lipo one is 130mah weigh 4.5gm
Another is stock one 350mah weigh 10gm
With 130mah total auw comes around 21.5-22gm  (:|~
Here attaching a pic continues the video...
In the video i have used the 350mah lipo total auw 27gm, Still good lift and stable i think..

note: Sorry for the bad picture quality, will upload some good one soon.. :giggle: :giggle:

http://www.youtube.com/edit?video_id=DDzTo7Gc33U&ns=1

  8-) 8-)

Wow ! Nice Flying  {:)} {:)}

Wow arun,

Wonderful. Very stable and smooth...
This is perfect built we all waiting for....

What is your sepc. Seems motor bigger one...
Can we have some close pics about battery mount and pcb mount?

Thanks you deepak.. :)

@shivela: thanks yaar..
  Motors are the same which satya provided 716
  Arms using 2.5mm cf rod
  Center plate is of I cream sticks
  Motor mounts are actually e-cig filters (vc sir's idea)
  And some super glue.. done
 Its super stable flewed it outside today morning.. I am loving it now..
Frame pic attached

Thanks arun for the pics.

Any pics for  pcb and battery mounts..and the bottom side of the quad..

Controller board is v939?

Bilal bhai i used the motor mount out of the old lady bug that i had. But they are not good, they dont keep the motors are 90 deg :headbang: its better to go with sketch pen cap or e-cig like VC sir said. I would rather suggest to make mounts using some hard paper. I would try something about this and update :thumbsup:

@Arun very nice man, can i add your video on the product page?? ;D

I have received new set of motors. Arun's idea of using CF rod i pretty good. Any idea arun where we can get them from? Or shall i get from my China :D

@SHIV: Yep i am using the same diy kit from satya bhai
The fc board is mounted using double sided tape and battery using velcro(easy to remove and charge)
i will add a lot of pic today.. But the build looks too bad :giggle: :giggle:
The wires are not properly hidden(lazy to do all these)  >:D

@satya: Sure you can add  >:D >:D
And cf rod is avail in india itself rcdhamaka, edallhobby, rcbazzar..
No need to disturb your chineese people for that..  :giggle: :giggle:

Ahh nice, then maybe others can buy directly :D

I think I can able to lift a small key chain cam if I updated to 720 motors right satya?
I tested this with different load..
Till 35gms it was fine.. when increasing the weight it is not lifting up more than a feet.. :p


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Use geared motors with 4x2 or 5x3 props for better lift.

Sundaram Sir, I have given that a thought, but making precise gearboxes are a problem, though I have the pinon and main gears from a couple of coaxial helis lying with me.......... Any idea to build one?

Regards
Bilal

If they are all from same model heli then it should work definitely. You can make geared motors from damaged servo gears. Only all four servos have to same model.

Dear all,

Today I got my DIY v939 kit. But can any one guide me how to bind controller board with flysky CT6B tx. ???

Xtreme, follo the instructions I have PMd you, happy flying

Thanks bilal sir. :salute: : :bow:

Xtreme,
do post pics of your build here, we'll love to see your creativity :)

Sure...As soon as possible.

And here are some Pics of my micro quad... A real quick  and dirty build..  :( :(

And more....

Why not enlighten all of us by posting it

Sundaram sir

How to bind the transmitter with receiver/Bind instructions:

 1. Plugin battery to receiver LED will flash quickly and stops
 2. Keep it on flat surface and LED will start to flash again at a rapid rate
 3. Hold bind button on your TX and switch it ON
 4. LED on receiver should start to flash slowly
 5. Turn off your TX and leave the bind button and switch ON your TX again.
 6. LED on receiver should be solid now, which means its binded successfully

i will modify the first post of the thread with lots of info. I have the modified text will send PM to gusty sir to do the needful :thumbsup:

dear arun
what is your motor to motor distance?
is it 4 cf rods that are sticked to base board?

just an update.
my second built was disaster.  hell lot of problems...
not climbing up...allignt problem with motor....
after that drifting to right side always....

need to restart from the scratch.

First post is modified thanks to gusty sir :salute:

Shivela boss mine is 100mm motor to motor...
What happens to your second build.. make sure that the fc is fixed parallel.. just use a double sided foam tape throughout and cut a slit for the projected parts...
mine now does flips also will upload the video...

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Dear Satya,
Just curios to know what happened to the H-Quad you built on the demo video? Did it fly? Were there any issues flying it? What was the total weight of it?

Thanks,
Sudhakar

My first frame for the micro quad scratch built. Bare weight 3gms.

Well done Sandy. That seems like precision engineering - how did you create that?

my question is same as that of VC sir. Frame looks damn good :thumbsup:

H-Quad frame was not a good frame i just did a fast build. I will build one very soon and post update about it soon.

@VC and Satya Thanks.

Dremel Zindabad.  ;D. Its simple 2.5 mm ply and 2mm carbon square tubes.

I have about 300 Plus bits & fitments for it, from grinding bits, sanding bits, cutting disks, Diamond point bits.  :)

End to End Diagonally it is 130 mm. I can reduce it if I want. The center piece is 12mm more than the controller in both dimensions which I could have made it smaller.

Still pondering over whether to use the paper roll method or similar ply mount for the Motor mount. The ply mount will be rock solid and will keep motors in absolute symmetry but will add weight. Paper tube though less weight will be difficult to maintain symmetry and will not be resilient.    

Today  finally I got time to finish my quad.
But it flip on side as soon as take off from ground.
Any suggestions to resolve the flip.

More pics.

Now frame is six grams. All ready for motors.  Whats your thought if the motor is mounted inverted with prop below.

@xtreme_machines :

Motor polarities for 2 motors has to be reversed.

For ex:

 1       2
   \    /
    \  /
    /  \
   /    \
 3       4

Motors (1, 4) and (2,3) has to rotate in opposite direction.

@Sundaram sir design looks fab :thumbsup:

Satya sir,

It is reverse only 1&3 are rotating same and 2&4 are rotating same.

Oh yes you are right, apply opposite trims.

How to do it at flysky ct6b.

9xR works?

Motor mount using paper.

Step 1. Cut little more than motor circumference
Step 2. Glue to end of the motor
Step 3. Roll around motor and apply some pressure.

To harden the mount we can use a combination of white glue (fevicol) and water in ratio 1 : 2

correct me if i am wrong in terms of ratio.

@Sundaram Sir, mounting the motors USD will damage the props in case of hard landings/crash.

Lipo (http://www.quadkopters.com/product/3-7v-350mah-20c-rc-lipo-battery/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to) and charger (http://www.quadkopters.com/product/usb-cable-charger-for-single-cell-lipo/?utm_source=RCI&utm_medium=DIY_KTI_thread&campaign=DIY_how_to) available to buy as spare

@ Veloci yes agreed. Decided against already.

Mine takes of in half throttle with a 350 mah. Hovers about minute and a half then its on the ground inspite of full throttle for 3 mins. I think the props I am using is not good for the motors. I believe motors are 716 with 20000 RPM max. Props are  marked as H21 its identical to a 2508/ 2510. Whats your take Satya.

Props are good sir, but the 716 motor is not enough powerfull. 716 can lift a max of 32-35 grams of load nothing more. 720 motors or other hand are more powerfull than 716 but than they are costly too :'(

Mine is just 31 gms. Even then no lift.

Sir, motor to motor distance? 100mm to 120mm is optimal.

I am sure problem is with the props which I have.

I have motors which are similar to 720, which I have been using with my Micro builds. Both have a marked difference with a 2508 Prop and a Plantraco Props. I don't have a contra rotating in Plantraco prop.

Even in present configuration with 716 it was able to lift off in half throttle only after I had given a twist to the props to increase pitch.

Ordered UDI props from Quadcopters. It should fly well in the present configuration.

If thats the case, do check with the new props when you get it. If you think that previous props had some issues i may get it replaced for you :thumbsup:

The previous props I did not buy from you  ;D. It was RCD props. Thanks

The completed quad with the props

Wow looks fab and indeed those are not the props which comes with the kit :giggle:

Sundaram sir looks stunning..
even I tested with the same props bought from rcdhamaka..
But the stock one looks good for me for that motor..
Anyway how it flies?

Sent from my Canvas using tapatalk 2

Thanks Arun, Satya. Its great. flew for few minutes only at a time. After I change the props I am sure it will fly great. Will be making another one 60% the current size.

What I am loving here is the FlySky FS-T6 2.4ghz Digital Proportional 6 Channel Transmitter * New model* Programing features are real Easy. Starts with the menu similar to Turnigy 9X but later pages are very similar to Futaba type of menu.

Dear satya,

Still my quad flip as soon as it takes off from ground any suggestions to resolve this flips. Is there any problem with trims or with gyro settings of the controller.

Should ask arun he has fixed his flip issue.. @arun any inputs??

One more suggestion, when you plug in the lipo to the controller make sure that its placed on the ground. When you plug in the battery it configures the gyros.

Try this, plugin lipo
Keep it on flat surface,
wait for flashing led

And then bind and try.

@satya: you pointed out the main thing.. keep the fc parallel while arming and binding..
If every connections are done correctly as well as all motors are at 90degree then it will fly.. and trimming may be needed to make it stable.. try it and update here..;D;D

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Hi Satya,
Received my first DIY quad yesterday evening. Thanks much.
Assembled it yesterday night, Here are the steps I followed as per the instructions in this thread.

1. Built the quad as per instructions.
- Motor to motor distance 110mm
- Total weight 30gms
2. Charged the battery fully.(Red light on the USB charger goes off, so I assume battery is fully charged)
3. Connected the battery to FS.
4. Successfully binded the receiver to transmitter FS TH9x as per the steps mentioned by you.

After this when I switch ON the Tx, all the motors motors start to run with out any giving throttle.
When I try to give throttle, It moves a little bit on the ground & flips off to left.
Help me with your suggestion for successful flight.

Thanks,
Sudhakar.

if the battery connection is reversed all motors will run continuously without even linking.

However after linking for a brief moment all motors runs. However if it runs continuously. Try to trim down the throttle. if its still running I am missing something here.

Thank you Sundaram. Battery connection is fine & polarities are correct.
Till I bind my Tx to receiver, Motor doesn't run. Only after the binding I see all motors starts running continuously without any throttle from Tx. I try to minimize the throttle, there is only slight difference in the motor rotation.

My question, Is my Tx (FS-TH9X) causing  this problem?
Is battery charging proper? How long do I need to charge a new battery?
Do I need to do any setting changes or reflashing of Tx to run a quad?
Please bare with my fundamental questions as I am new to quad.

Thank you all for support!!

Is there something wrong with your prop orientation or am I confused? I thought the props diagonal to each other should have the same orientation..................

As far as the motors running without any throttle input, I have the same problem - I can't bring them down to zero rev at zero throttle and trim all the way down. However, do the revs increase when you increase throttle?

Nopes you dont, check the trims. Specially the trim for throttle, when receiver is binded with TX it is getting some throttle input which is why you can see spinning motors.

EDIT: yes diagonal props should rotate in same direction as pointed by VC sir.

My Mistake, I have made the changes in the props with diagonal props to rotate in same direction.
Yes, Revs increase if I increase the throttle.
Chopped off the extra foam in the middle & reduced some more weight.
Tried interchanging the props, but still same condition. Quad doesn't lift off from ground.

Sudhakar Sir,
in the first pic that you have posted, I can clearly see that the prop orientation is not right.... Just interchange the position on black props and check whether each of the four props are pushing air downwards by connecting one motor at a time

Lipo fully charged? are you charging using USB or WALL ADAPTER?

@Bilal, I have interchanged the props. Will try out the individual motor test method mentioned by you.

@Satya, I am right now using USB to charge the battery. Each time I connect the battery, with in few minutes I see the red light on the USB cable goes off. I assume this shows the battery is fully charged.

For me it takes almost an hour to charge a 350mah using the provided USB cable

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Right keep it till 1 hour atleast, that red led is not very reliable. If you plug in the lipo after its charged still it will glow.

Thanks Arun / Satya, Will try it out & let you know the feedback.

Hi Satya,

got the kit today afternoon.. very impressive one day delivery from the first flight guys..
:)
 
I have assembled the quad as per instructions.. but it has problem of the motors start running when I switch on the Tx after binding.. there is not lift at all and the quad does not respond to Tx controls..

please provide the info on the following please...

there is no instruction on wiring of the motors. all the black wires (-) will be connected to the black wires of the connectors .. is it so..?

I have put the paired props (orange pair of CW and CCW props) in the front i.e. motor 1&2. please let me know if it has to go this way..

thanks

Its DIY kit so you have read this whole thread to find the info. I have updated the first post (http://www.rcindia.org/multirotors/a-small-diy-quad-within-everyone's-budget/) so you can check that.

2 motors diagonally should be connected in normal way (black to black and white to red) and other 2 should be reversed.

mini quad weight should be less than 32 grams for a lift off. Please charge the LIPO atleast one hour prior to use.

@Arun / Satya, Charged the battery for an hour from USB.

@ Bilal, Tried the motor testing method you mentioned & fixed the props accordingly. Now I see the quad lifts off the ground & flies a bit, but not too far or high.

@MKS, Please refer this page from the top, Me too had similar problem but fixed it with Arun, Satya & Bilal's feedback.
BTW facing the same issue of motors start running soon as I switch on the Tx after binding. I get very little control over throttle. Satya should be able to tell us the exact reason for this behaviour.

If it is lifting then all the settings are correct.. it is not lifting up is because any one of the motor is not mounted in 90degree angle.. please check that properly..
It will fly good... for sure..
Sent from my Canvas using tapatalk 2

Thanks Arun, Will realign the motors & try it out.

But any idea as to why the motors start running soon as I switch on the Tx after binding.

Sudhakar Sir,
the motor rotate for a second after switching on the Tx to conferm binding and then stop........ If the motors in your quad isn' stopping then you probably have your throttle trim offset.... Set it to zero ie. At the lowest point, or you have some programming issues with the throttle curve setting..... Try to look into it

regards
Bilal

Arun said right, motor has to be at 90 degree

Sudhakar you are speaking about slow rotation of anyone of motor soon after connecting the battery right.. that is because of some short in the circuit board..
you soldered directly to the board I guess..:-X
Micro soldering needs perfection check for some short.. check whether the motor which is spinning continuously is speeding up while increasing the throttle...
It won't I guess again..;D
Sent from my Canvas using tapatalk 2

Guys here is my New diy quad using HX 552 control board from QUADKOPTERS.COM And the 720 micro motors..

Frame: 300mm(motor to motor)
Motors : 720 from quadkopters
fc : HX552 from quadkopters
Motor mount : sketch pen body
center plate: 2mm coro sandwiched
Weight : 40gms without camera  8-) 8-)

First of all this is a great control board very stable and very much controllable..
And about the motors they are Very powerfull lifting the 40gms in less than 30% throttle..
Yaw is a bit slow.. but i guess it can be solved easily... This is quick and dirty build..
Will do a Build log in couple of days..

Some pics
Included a Small kechain camera removed the case, Its a bit heavy still it can lift at about 60-70% throttle and hovers good..
Will upload the video soon..
 :thumbsup: :thumbsup: :thumbsup:

Here is a video...
Without the camera..
http://www.youtube.com/watch?v=TeBlLwMw-SM

Thanks Arun for doing it for me, and as always the build and the fly looks awesome :) :thumbsup:

Thanks Bilal, Will try the settings in my Tx & do changes if any necessary.
Also, Please mention me by name. No 'Sir' Please...... :)

@Arun, I am lucky to have got the FC board with male & female connectors. Hence no soldering business. Else I am very comfortable with soldering.
I will any ways check for any soldering bridges on the board if in case it as come by default. I see the variation in the speed when I try to increase the throttle.
I believe MKS also has same issue as mine.
Mean while yesterday I tried doing the motor realignment. For first time quad flue for 3ft height & hit the wall due to which one of my motor holder broke.
So thinking of some more rugged motor holder, will try out some thing to night & let you know the feedback. Thank you very much for your suggestions.
BTW, your new quad looks awesome... {:)}  {:)}
You are really a quad guru!!  :bow:  :bow:

After Arun trying that 300mm build with the new motors and FC i am very tempted to try to build 400mm or 450mm. will give it a try this weekend.

@Arun i have few questions:

1. How do you manage to keep the motors upright at 90 degree?? any tips cos mine is the orientation issue always.
2. How do you manage to keep the vibrations away from the board? i noticed that the mini quads had small rubber at the board mounts.
3. Last and final what was the AUW of you 300mm with camera and without.

Thanks :thumbsup:

Today the new set of props should reach me wait for the videos satya.

very eagerly waiting sir :)

Satya bhai I just used  protractors to make it perfect 90degree then fix it with super glue..
Just put 2 layers of foam tape under the fc and cut of the projected parts,now fix it in the center plate.


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Auw without camera was 42gms( mentioned 40 first but added some more tape and glue now)
With camera its 50-51 grms

And one more thing it done flip and roll nicely(I didn't forgot to record the video)will upload soon
And very much crash resistant,  torture testing also done while flipping...;D;D


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Satya sir, will these props work with this v939 quad kit?
http://www.hobbyking.com/hobbyking/store/__42099__45mm_Replacement_Prop_Set_HobbyKing_Pocket_Quad_V1_1_Quadcopter_8pc_.html

I think yes they should go with it, but i am not very sure.

Satya mine with 716 motors some thing wrong with motor's or board. With new set of props its flying alright at 50% throttle for 1 min then it comes to ground slowly Inspite of full throttle. Then if you give it a break for a min then again it flies for a min. This I am able to do 3+ times  before battery dies. AUW is just 29 gms with 350mah.

I tried reducing wt to 25gms by replacing with a 150mah battery. Now it flies easily for 1.5 mins then again its back to same. Then after a break for a min it flies again and same for three times.

Since its doing same symptoms at 25gms also I have doubt its some thing is wrong with motors or battery. Any remedies.

I have noticed this couple of times with my mini too, but sometimes it happens and sometimes does not. I always think that battery is drained and i simply charge it again. But never really thought a lot about it. :(

Arun what do you think about this?

Here it is consistent

May be the motor driver ICs gets hot at constant throttle run for too long...... remedy can be the correct motor rating, control board and weight of quad.

 

Yes Motors are definitely getting hot. Not the board.

That's something fishy.. I have tried 3 types of motors the one had,  the 716 and 720 not et occurred such a problem yet..
???
The little one is flying for almost 4-5 min without any problem.. and the only problem I was havung sometimes is that the motors getting slow down suddenly and the board getting unbound... I rectified the problem by decreasing the e.point values of pitch and roll in the tx to 70-80% dunno whether they are related or not but the problem just vanished away...;D

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But sundaram sir these tiny motors getting hot are normal... coz I can't even touch mine after 4-5 min flying.. still working good almost 50 flights..;D

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I had the same problem with my motors.. the old ones... I also dropped the e point of everything to 75....it stopped behaving bad now

Sent from a potato using a lamp

;D;D;D;)

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Let me try reducing end points. Will update

Got the kit some time back.

Wanted to check if this can take little higher capacity battery and connected with 750mah (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=20386)

There was a spark and little smoke from Board. immediately I disconnected. then Again I connected with the batter it came with.
Its binds the Tx but motors are not responding.

Does this board will not support little high capacity battery?

Please let me know.

thanks
cheluvaraj

Oppps, 350mah - 400mah(board gets very very hot) is max for these boards

 :banghead: :banghead: :banghead:

Do I have to go for new Board then ?

I am afraid but yes :(

I am not sure why should capacity be a problem. Capacity only specifies how much current (or rather energy) 'can' be drawn, not which is being drawn. On the flip side, this battery should provide more flying time for the quad, unless the motors heat up and stall. The voltage matters though but you're running 1S which is the quantum for LiPos.

Needless to say, the board seems toasted.

I second that... the mah won't matter at all.. you could have fried that board coz of some short circuit.
And satya may have think like more mah will increase flight time hence the board will heat up more and there chances of frying up...
???


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Arun,

Definitely there was no short circuit.  :'(
Board and battery both has male and female plugs so there is no chance of short circuit.

I'm quite new to electronics & electricals. As mr. Girish said, was also under same impression that it might work with higher mah too... so went and connected the battery.

Cheluvaraj

I dont know, but initially my plan was to give 500mah with the kit (for more flight time) all suppliers said anything more than 400 mah will fry the board. Even in RCG there are couple of posts where users question the author about more mah and he has said same thing. :headscratch: :headscratch: :headscratch:

I would second Satya on the damages of Higher mah.

Higher mah lipos has the capacity to deliver higher amperage without equivalent drop in voltage. Higher ampere delivered combined with higher voltage results in higher wattage delivery in comparison with a lower mah lipo setup. If the motor has the capacity to draw more amps then it will load the system and as a result either the ESC or the motor will breakdown.

This has happened with me when I was testing a EDF of 650 watts. when run with single lipo the system was running perfectly fine for many hours. when I was testing it in the test stand connected with many lipos in parallel board, so that I don't have to change lipo often, the same setup burned out the motor within a min of operation even though the Lipo was 3S in both case. Since the ESC was twice the required amperage complete load was on the motor.

However when the motor does not have the capacity to draw more amps (Higher impedance motor) then nothing will happen to the setup even though you increase the mah.

Mr. Satya,

Would like to suggest that you should put a note (not to use higher mah battery) for this kit.

Cheluvaraj

But in your case of instant spark and smoke the polarity of battery may be the culprit.

here's a build tip... if you have the weak motors, and want to make it light, make a 15cm cross with the bamboo sticks, make a platform with coro, mount the motors to the tips of the rods with blobs of hot glue, and use depron pieces to make any aesthetics on it....

tomorrow I'm entering this baby into a science exhibition... people get very excited to see something fly...  :P will post pics soon!  ;D

regards
aniket

Sent from a potato using a lamp

Wow!!! post pics man..

Bad idea IMHO. The motors easily get hot enough to melt the hot glue.

ya I was also doubting that, but after testing, I found the motor heat is not enough to melt the blobs so much that it drops the motor... the glue is thick and sticky enough to work...

Sent from a potato using a lamp

Just wanted to thank everybody on this thread. i had purchased the DIY kit from Quadkopters.com and built it in less than 3 Hrs ( using the RCG 18$ quad thread ) felt really happy with my self, but once i tried to fly it all my happiness drain away slowly with every crash. Caused by the various issues discussed in this thread. so i gave up on the first build and have started on "V2" which will hopefully be a much lighter frame thanks to all the info i have read here.

Thanks again.

Hey Satya Bhai this is a very nice kit ... Thanks a ton making it available.... Got my kit a few weeks ago Nicely Packed and ON TIME !
My Quad Mk1 and Mk2 had a few issues same as the ones discussed here ( SOLVED THEM USING THIS FOURM )
I am Going For My Quad Mk3 now with the 553 FC . 
And Yess Where can i get the Micro JST pins used on the v939 i need more of those connectors??? i couldn't find them on your site.

Dear Yusuf, thanks for the appreciation :) glad that you liked the kit.

Those micro jst connectors are not easily available, it was a nightmare for me to find few of those. I just got few 100 hence i have kept them to give along with the KIT. I am trying again to get same connectors to sell them separately :thumbsup:

PS. Guys where are build logs, images videos?

First and for most a big thank you to everyone here for all the info you have given. For an amateur RC hobbyist like me the information here is like the Holy Grail and you guys are the Illuminati.

Secondly I AM AN AMATEUR RC HOBBYIST… So I can and will be wrong. Please don’t hold it against me and please correct me where I’m wrong. Also I’ll have a lot of stupid questions, so bear with me please.

Thirdly this is my first attempt at a meaningful post… I’m trying my best. 

Back to topic…

Here are a few pictures of my DIY micro Quadcopter.

(http://s6.postimg.org/djc2ntg01/Version_1.jpg)

My first attempt which was a complete disaster. I had mounted the motors with cotton thread and then covered them with 5 min epoxy thinking that everything was alright. Well… everything looked alright anyway ( The motor looked like they were at a 90deg angle).  The quad would take off and then pitch seriously towards the rear even after my pitch corrections from the Tx.  So I would power down and land as I don’t have a lot of space at home. After that it would refuse to leave the ground. The problem was a combination of mistakes…

The motors were not at a 90 Deg angle.

The center of gravity of the board was incorrect. ( A very big factor for stable flight. At least for me.)

The huge blobs of epoxy were adding to a lot of extra weight. 

The Tx Calibaration was incorrect on my HK T6A V2. i.e. End points, throttle curve. (Another  important factor for stable flight. I still haven’t got it right. Hopefully my Grail will help...)

(http://s6.postimg.org/ebt0z5hs1/V2_Complete.jpg)

So I left the V 1 frame and from the info I read on this thread ( Am I calling it right? this is a thread right?) I tried my hand at a Version 2.

(http://s6.postimg.org/wxr6zn51d/V2_Motor_Mount.jpg)

I decided to use a motor mount like - @Arun.Srelakam, @Sudhakar_yg, @xtreme_@machine, @sundaran, @shivela39, @satyagupta - the main man who made it possible, though all of you made it work, @VC, @Veloci and @bilal.  My apologies if I missed anybody out.

Here are the pics for the motor mount and basic frame for V 2. (Motor to Motor length 114mm)

(http://s6.postimg.org/km22rdlc1/V_2_Frme_and_Motor_mounts.jpg)


I used a cross I had drawn on an A4 size sheet using a protractor ( thank you to @arun.srelakam ) to align the two length of bamboo sticks.

This was a 2 stage process. First I used Fevicol SH to join the two pieces of bamboo while constantly correcting the alignment on my A4 diagram
In the Second stage, once the fevicol had dried and I was sure of the alignment I dropped very little epoxy on the joint to seal the deal.

I followed a 4 stage motor mounting and securing process.

First, I burnt a hole in the sketch pen body that I was using with an old soldering iron and inserted the mounts on to the ends of the bamboo sticks. Then checked for alignment issues.

Second, I jammed the motors into the motor mount. Here I spent some time aligning the mount and the motor using an L shade diagram on paper. These paper diagram are very good for basic aligning of motors. Another good way to see if your motors are aligned is to use the same cross used for aligning the bamboo stick, turning your micro quad upside down and seeing if the motor shaft center point of all 4 motors sits exactly on the lines you have drawn. You could still be off the exact mark but this process helped me a lot in getting my micro quad flying.

Third, After I was 90% convinced about the motor alignment, I mixed up some epoxy and first glued the mount i.e. the sketch pen body, to the bamboo stick frame with the motor in it. Again constantly correcting alignment.

Fourth and final stage I added epoxy to the motor and motor mount joint. Again constantly checking alignment.
With the motor alignment things can go wrong without one knowing it so it’s best to spend as much time on it as you are willing to give.

(http://s6.postimg.org/640a5n4n5/V2_Motor_Mount_Complete.jpg)

(http://s6.postimg.org/x5etw5g01/V2_Complete_2.jpg)


The V 939 FC mount needs some work.

But what I essentially did was use a packing foam block with Velcro stuck to it. I stuck small square pieces of Velcro on the FC board’s mounting holes and used it to hold it in place with the other piece. While it looked very flimsy to me it seemed to give me decent results. But I would prefer a more solid mount. Maybe I’ll use double sided tape instead of Velcro. Any suggestions ? (taking the FC off will be a little difficult with Double tape.)

I read this on the rcg 18$ quad thread.

The center of gravity plays a very important role in this V939 FC board. While larger quad FC boards like the KK board and the HK board ask you to mount the board on the same plane as the propellers, this V939 FC should be mounted on a lower plane as compared to the props. This setup has been a great help to me. It has removed the crazy, tweaky effect that I was facing earlier. I actually got FULL ON stable fight when i lowered the plane of the FC as compared to the props. Not that I don’t have problems even now, which I will elaborate on later, I have still been able to fly the quad well for a considerably longer time than in version 1.

(http://s6.postimg.org/5e53a6erl/FC_Board_Mounting_Plane.jpg)


Now that everything was setup I went on to TX Calibration…

@VC sir – I assume you are using the HK T6A V2. If I am wrong pls ignore this question. If not… Have you been able to find a decent setting configuration for this quad FC board.

I reconfigured my TX, put it on ACRO mode. Reduced EP to 75% on all 4 ch. ( thank you @Ankit210696 & @Arun.Srelakam) but I still have a problem.
The quad only lifts off at 50% – 60% Throttle and at 100% throttle it stays up in the air for about 6 sec then it starts to drop down.  I tried stopping for a min (like @sundaram sir) and it does the same thing (lifts off at 50% – 60% Throttle and at 100% throttle it stays up in the air for about 3 sec then it starts to drop down) only after the second try the quad refuses  lift up. I think the problem is in the throttle config i.e. throttle curve ( as mentioned by @Bilal sir) or the frame is too heavy. I don’t have a gram-o- meter but I have a cousin coming in with one soon, so I’ll the weight of the quad.

Anybody using a HK T6A pls share the config settings…

Now that I have stable flight but not for more than 6 sec in the first try and about 3 sec on the second try, I would really appreciate your opinion on how to get it to stay in constant flight for at least 3 – 4 mins.

(http://s6.postimg.org/xkq3p61xd/V2_Complete_3.jpg)

Thanks again people, you are a great help. Will post more when I get things sorted out.

Maybe my EP settings are off. If somebody can post a screenshot of their EP on their TX config especially on the HK T6A V2, I would be very grateful.

I will also post a video of the problems I am facing.
 

A successful Sunday…

I finally got the Quad to fly for a good 3 mins.

I made a couple of changes to the FC mounting on the frame.

I removed the foam and Velcro base I was using to hold the FC in place and instead used four blocks of cardboard (made by sticking matchbox covers one on top of the other with fevicol)

(http://s6.postimg.org/4813bdqgx/V2_New_FC_mount.jpg)

I stuck the blocks to the FC using fevicol and then fixed the four blocks to the frame using epoxy.

(http://s6.postimg.org/qy4ti3z29/V2_New_FC_mount_2.jpg)

The FC is now firmly stuck and doesn’t move at all. The down side, I think is that due to the lack of damping material the FC board will have a lot of vibration to deal with.

Also changed my Tx calibrations… (HK T6A V2 - Mode 2, Type : Acro)

Here’s a screenshot of my Tx EP settings ( CH 1 – aileron, CH 2 – Pitch, CH 3 – Throttle, CH 4 – Yaw)

(http://s6.postimg.org/nap2c1qv5/TX_EP_settings.jpg)

When binding I kept the throttle trim at 0 ( Or right at the bottom ) as suggested

Before putting the Tx on again to arm the quad I put the throttle trim at Full ( Or right at the top ) doing this lets the green line showing my throttle stick position in T6config, go right to the end.

Should this trim change make a difference or was I just lucky…??? Any suggestions Seniors...

I will make build video tomorrow.. to make things easier..
Don't know why you are fading this much problems..
So get back here by tomorrow...
::)::)

Sent from my Canvas using tapatalk 2

i recently bought this mini quad parts from satya and have entered the field of RF for recreation ( i earn my bread and butter through RF communication ) and assembled it though was stuck at the final stage of plugging the motors in the FC and searching a little got me the following page... :) happy to share...

HACKMODS --> http://www.hacksmods.com/2013/01/wltoys-v939-flight-controller/ (http://www.hacksmods.com/2013/01/wltoys-v939-flight-controller/)

it is for this specific V939 FC which comes in this kit....

now hunting for a TX radio... which is out of stock almost everywhere in this country.... at this moment... cannot fly anything till then sadly  :(

@ arun.sreelakam

Eagerly awaiting the video sir. :salute:

@saintofinternet

Real Bummer!!! when you get stuck like that its a real pain. The waiting...

I busted a motor during my first build so i had to order a pair from Satya sir. As always, the order from quadkopters.com came at super fast speed... so i was back at it.

Here is a video of the quad flying (apologies for the low quality. shot on a web cam)

http://www.youtube.com/watch?v=tlkfiNs_y9c&feature=youtu.be (http://www.youtube.com/watch?v=tlkfiNs_y9c&feature=youtu.be)

Also i had mentioned certain issues i was facing. These are not Problems as i'm having a ball of a time flying this awesome quad  either way. I'm am just trying to understand the tuning process of the quad for best possible flight. So any input on that from the Seniors would be highly appreciated.

For anybody thinking of buying the DIY kit for Quadkopters.com ... stop thinking and JUST DO IT... this is one of best build around.   

help...help.... as a novice to this field i would like to ask the following question....

how is the wiring from the quad motor to connector??

the quad motor has WHITE & BLACK while the connector to the boards have RED & GREEN... when i connect the +ve and -ve of all the motors.... some are pushing the air up and some are pushing it down...

now i cannot figure out the motor wiring to the board.... used the following post for reference http://www.hacksmods.com/2013/01/wltoys-v939-flight-controller/

Using the image on that link check your prop  orientation. prop 1 & 3 should be the same and props 2 & 4 should be the same. The same goes for the wires from the motors. 1 & 3 should have the same wiring - 2 & 4 should have the wiring reversed.
Why dont you post a pic of the quad and someone will definitely be able to guide you better

yes i guess i learnt it the hardway... i thought the Flight Controller would be taking care of the motor rotation directions but it seems pure +ve & -ve have to be swapped to get the desired direction.

is this the case with just this mini quad or also with other big motor quads? does polarity of the motor needs to be looked into before getting it on with the wiring? does the ESC or the Flight Controller do nothing in KK or Aurdino boards regarding prop roation??

So thats always it has to be with multirotors. If one motor is spinning CW then other should be CCW. Thats why you get 2 x CW props and 2 x CCW props

hi satya... don't know how but only 2 motors are running when i push the throttle stick maybe i smoked the board..... will eat it with a pizza next time [Flavour : Smoked FC  ;D ]

i have placed an order for a new V939 last night... can you make it avaliable to me in by Friday evening in Pune?? need to push things fast...

also how to identify the CW and CCW props?? i mean with this mini quad and also in future...

With this one the best way is to first solder the connecters as per the instructions - two regular and two reversed. then mount one prop and see which way it turns. If that is correct then using that as the guide you go ahead and mount the other three props. if you are having trouble visually identifying if the prop orientation is right you should check to see if the props are pushing air/blowing downwards or upwards.

So the prop direction is right if the air is going downwards.

@saintofinternet: your order would be shipped out today evening :headscratch:

May be you would get it by tomorrow evening.

ok so now i get it... its 1 & 3 either CW or CCW and 2 & 4 exactly opposite of earlier config....

@saintofinternet

You are right... With V939 FC, motor 1 & 3 require opposite soldering i.e White (from motor) to black (From connector) & Black (from motor) to Red (From connector).
Also motor 1 & 3 will always run CCW. Hence the opposite soldering.

motor 2 & 4 run CW hence solder Red to Red & Black to Black.

As @frankinsmoke mentioned, to check your prop direction, place the prop infront of you and see which side does the pitch rise. if it rises ( or is higher ) to the LEFT its CCW, if it rises to the RIGHT its CW   

Now this is frustrating....

I resoldered all wires and connected each motor to the  battery and checked the air flow. All were giving the air thrust downwards.... Then numbered them according to CW and CCW and placed them.

When i connect the FC V939 and bind with FS9THX the motors push the air upwards...

Also when connected to the battery the motors spin with very high thrust but when thru the FC their speed is much low not enough to get the lift. Anything yo do with the Radio Control? I am using FS 9THX.

N

If you set your throttle trim at 0 while binding (as recommended)  increase the trim to 100% and then turn on your Tx to arm the FC. This helped me when my quad wasn’t going higher than a foot.

Also scheck if your motors are at a 90 deg angle to the sticks and that they are aligned correctly.

Tx calibrations are important. Things like your  End Points settings & trims.

if the direction of the air flow is changing between battery and FC, then maybe the wiring between the motor and FC is incorrect… maybe??

Hey... Changed the design... Frame made from the sticks sent along with kit... Motor to motor distance 150 mm.....Pic attached. Reference: Satyabhai Zindabad!!!  {:)}

Now it is Frog....  ;D .... It actually jumps and lifts itself a Max 2 cms from ground and highly unstable... All motors at 90 degree. Props rotation perfect.... Thrust from all 4 is downwards. It tends to roll more...

Any idea?  Also this is the first time i am doing this and also handling the transmitter first  time hence do we have any FS 9THX lessons on the internet?

try this...

http://www.youtube.com/watch?v=SnwBUKxdleM

@arun.sreelakam

Arun Sir... Still eagerly awaiting build video... :) :)

hey thanx for the video but unfortunately my firmware in the transmitter is completely different. i have the original FlySky firmware still in it so that video is of no use to me as of now...

Reiterating what has been said multiple times on this thread before...
This kit is pretty awesome and is a must buy for any beginner who wants to experience the pains and fun of DIY before foraying into full fledged modelling on your own.
The detailed build log by Siddaniels was pretty useful for my own build. Not many replied to him but thanks a lot man! It helped me a lot!

At first try, my build had issues of excessive wobbling right after lift off. But as expected, it was my own error with the motors not being at a perfect 90 degrees in all three geometric planes. With a little more trial and error corrections, i was able to make it fly perfectly balanced although i am a complete beginner to quads! :)
Thanks a lot Satya for making such a simple and cheap solution available to us!  :hatsoff:

Just one query at the moment, how can i make the quad hover being  at least reasonably still. At present, it simply keeps floating away in any random direction if i try. Also, i am not able to keep it vertically still. It either keeps climbing or dropping. BTW my end points for all channels except throttle are at 75% if that info helps. Any guidance?

@ajayjohn

You are absolutely right sir... this is a great build, probably THE BEST around town and with the info provided here everyone can be a quad flyer.

Glad to know that the info was useful to somebody...

suggestions for your query. As stated earlier I think by Veloci optimal motor to motor distance is 100mm to 120mm. Smaller is better!! My Quad was 115mm ( in the video ) and i could get it to hover pretty steady for a while. After a serious crash i cut the M to M distance to 99mm. It tends to drift toward the rear so by giving continuous forward input (very little stick movement) i get it to hover steady for a a decent amount of time. The reduction in size has definitely increased steady hovering.

Also a stupid mistake i made was to set my EP as 75% - 75%. it should be 25% - 75%.

Thanks for the info Sid!  :hatsoff:
My build's shaft length is 120mm and motor to motor distance would be about 4-6 mm less than that which seems to fall in Veloci's ideal range.
Still getting some amount of lateral movement :(

Could you please elaborate on your EP values?
As in (which ever applicable)...
Aileron: xx% - xx%
Elevator: xx% - xx%
Rudder: xx% - xx%
Throttle: xx% - xx%

I am assuming the rest are left at the default 100% - 100%

hey guys, i feel so happy that you guys are enjoying this built so much. I admit that its very hard to get it right in the first try. I myself have made 4 frames, all are not perfect in any sense :giggle:

But all the problems that you might face is discussed in this thread and many are solved and suggestions are mentioned in this thread. And one very important thing that you guys need is patience a lot of patience.


Buddy i am not very sure, but both of your build pics that you have shared it seems to be me that V939 is not mounted in the center of the frame. It has to be at the dead center of the frame. And it affects a lot.

Glad to be of help Ajay...

Move your Tx sticks very slightly especially for Aileron and Elevator. try to find that prefect stick position that gets the quad steady.

My EP settings

Aileron: 25% - 75%
Elevator: 25% - 75%
Rudder: 25% - 75%
Throttle: 100% - 100%

I trim my throttle right up before arming the FC otherwise I don’t get a lot of lift. Haven’t figured that one out yet. I think it’s got to do with the throttle channel’s stick signal range. Maybe you won’t require it. If your quad is flying really high at full throttle then you probably don’t require resting the trim.

I’m using a Hobbyking T6A V2 Tx. I feel (I maybe wrong) that every tx will react differently to the FC so you’ll have to spend some time on it. I tried using the throttle curve on heli settings on my Tx and some really weird stuff started happening. So keeping it simple for now : )

Satya Sir… it’s because of people like you that we guys get a chance at a build like this… And we all must thank you for that!  :salute:

For everybody who’s new to this and has bought the DIY Kit, the thing to watch out for in a DO-IT-YOURSELF build is the “YOURSELF” part. So read as much as you can about it… the rest will come along the way. Happy flying...

Hi Guys,

I recently bought the DIY V939 mini quad parts from Quadkopters.com. I am building the frame at the moment. Guys i have a EFLITE HP6DSM 6-Channel 2.4GHz Transmitter, 2.4GHz DSM2 is it compatible with the V939 controller board?? When i connect the battery to the controller, the LED flashes fast and then goes OFF, When placed on a flat surface the LED flashes again fast and then after 3-4 secs it starts flashing slowly.. I tried binding this transmitter but the LED on V939 controller is not going SOLID RED.. i tried over and over still the same. Even if i dont turn on the transmitter the light sequence on the V939 remains the same fast flash and then slow flash.. is everything alright with the board or can someone help me binding sequence correcty...

I tried all this steps and it doesn't work :-

1. Plugin battery to receiver LED will flash quickly and stops
2. Keep it on flat surface and LED will start to flash again at a rapid rate
3. Hold bind button on your TX and switch it ON
4. LED on receiver should start to flash slowly
5. Turn off your TX and leave the bind button and switch ON your TX again.
6. LED on receiver should be solid now...

THE STEP SIX DOESNT WORK  NEED HELP !!

not with DSM2, compatible transmitters are listed on the first post and on the product description page.

oh no... why not DSM2 ?? i assumed it would work... i cant buy another transmitter now... is there any other way to make it work ??

Well the receiver that is on the V939 works with only the compatible transmitter listed.

I am also building a Q450 quadcopter. So the DSM2 transmitter is compatible with Orange Rx ????

finally i was able to lift the quad today after making a hell lot of different designs and was able to hover for 40 secs once.... but after that even with a full charge battery it refuses to leave the ground. don't know why and how.  ???

i want to know one thing how is that this props and motor generate only less than 40 grams of thrust? and how come the same config from the market can fly something heavier? i mean even adding a drop of hot glue messes the weight configuration and its like back to square one.    :banghead:

now i have ordered the small motor holders from satya yesterday so hoping to recv. it today. let's see if that help me in keeping the motors straight at 90 degrees and also if they can be of aid for me to put on some extra weight... need to figure out something like adding an extra transmission gear of different ratio to change the RPM's etc...  :help:

the kit is fabulous with unlimited potential to try out but i request satya to also add a "patience package" in his online store which one can buy to keep going  ;-) kidding....  :giggle:

@satya, HK has joined the battle it seems... http://www.hobbyking.com/hobbyking/store/__44970__X_DART_Indoor_Outdoor_Micro_Quad_Copter_w_2_4Ghz_Transmitter_Mode2_RTF_.html

look at that case...

does AUW look to be at or below 35grams?

i can't tell... but it is 20$ INCLUDING a Transmitter ... :O

very cool man :O

well... i got new motors from satya and tried all different designs but till day... my unit has not been able to lift itself up...

is the FS-TH9X throttle to do something with it??

i mean am i not giving it enuf throttle for the lift??

@ saintofinternet

Have you tried using your throttle trim? Maybe setting high % end points on the throttle channel might help…  (I haven’t used the TH9X but my HK T6A lets me set a % between 0% to 120%. I went right up to 120%)

@ ajayjohn

My ep setting are wrong
It shld be
75% - 75% on ch Aileron, Elevator, & Rudder…

my apologies for the error. I’m still learning.

@siddaniels : thanks for the reply...... Any idea how is that to be done on a FSTh9X?

try this. its the manual for FS - TH9X. page 18 should help...

ftp://ftp.tt-rc.de/TT-Copter/Manuals/FS-TH9X_MANUAL.pdf

@saintofinternet 
 was the manual helpful?

hey... thanks for the link. actually it did not work...but i had the manual so i refered to the page you said and tried out everything but no luck so far...

first it would'nt bind to my flysky and then i burnt the controller board. it smoked.  ;D
ordered another from quadcopter.com, this time the 552

Hey guys. I tried to bind the receiver to my flysky fs ct6b by following the exact steps mentioned in the first post but no luck :(  I'm not able to get the red light solid. Please help.

Only possible reason is low voltage in your lipo...
Charge it fully and try again.. good luck;D

Satya has two sets of motors. One smaller with internal resistance plus 3ohms and one longer motor with internal resistance approx 1.7ohms.

Till date I have not been able to make frame hover for more than 30 secs with 3ohms smaller motor Inspite of being lighter at 29 gms. moment lipo voltage drops fron full charge it settles in ground no lift off.

But frame with longer heavier motor of 1.7ohms hovers for plus 2 mins till lipo drains completely.  

3ohms motor is just not suitable at all for any frame. I am going to exchange the spare set with satya for 1.7ohms motor.

I have now bought just a X-Dart frame from HK mounted all electronicsand having a blast. Look at the pictures.

The finished quad pictures

I would like to buy the kit.
I would also like to know about the cheapest Transmitter which would be compatible with the kit(can someone please explain how the compatibility is determined?).
Also can we make a Transmitter "for the kit" ourselves?

I am an RC beginner & am also endeavouring to program my own code on a self-made Flight Controller(Arduino/AVR).

Thank You.

Great work.
I am myself a beginner and hope to do the same.
Which TX do you use by the way?

Thanks for inspiring.

Fly sky FS-T6

www.youtube.com/watch?v=YcgoidoLLCw (http://)

friends.... i tried a lot but ultimately my small quad never left ground... its was doing it if the battery was unattached to the frame... but with the battery it just could not create enough thrust... just felt very sad as it was for my 6 year old daughter who was very excited about all this and without the quad leaving the ground we both were like  :banghead:  :)

used the lightest material that came with the kit... the props and motors were perfect CW and CCW and the props were creating a lot of air in the bottom direction... but it just refused to pickup...

using a Flysky 9 flashed with ER9x as the transmitter

I hope you did a throttle ranging.  How to do it is there some where in the same thread.

If you are using same prop which i have used and AUW of 30 gms even with 716 motors (which is 16 mm long) you should hover for  at least less than a minute. With 720 motors you can hover till batteries dies. It's because 716 has more resistance more than 3 ohms and moment voltage drops in lipo with usage it's not  able to support required amps. Best is if you can manage a 716 motors with less than 1.7 ohms. Your quad will be really agile in air due to less AUW and high thrust.

hi sundaram... where can i find the throttle ranging on this forum? i tried searching it... but did not get anything.

It's there  in same thread in the Beginning some place. Which motors are you using you did not say that. Also if you can check the ohms of motors with multimeter and let know.

the motors i have nothing written on them but they came with the Rs. 1800 kit from quadkopters.com

i do have multimeter but should i connect it directly to the motor and take the ohm reading?

Yes ohms directly with multimeter.  The length of motor will determine whether it's 7-20/16. Motors make lot of difference.

how to set up the turnigy 9X setting for the V939 quadcopter ?

@Satya Sir......
Can we have such kits again :)
I mean people can use these parts in there micro planes as well..............
 (:|~
Coreless motors, rx tx, small 1s batteries, small props

MoreOver the craze of micro planes and quads is also rising :D

i am a bit confused. this is going to be my very first rc project so i want to get it done right. i need to know which controller i should buy? and which tx-rx pair should i go for? and from where i should buy all this? the links in description are obsolete now so its hard to understand what you are referring to.

Get kk 2.1.5 controller board. its easy to use. Having display of its own.
You can get flysky tx/rx (affordable)    or     , Jc 6channel, futaba 6 channel or spectrums 6 channel tx/rx(Costly)

@ abhinavbhopal26 .check this link.http://rcexplorer.se/category/projects/