RC India

So the T-copter frame I was building turned too small and decide to build a new one. This is the first multirotor I’m building from scratch so trying to keep things simple right now.

The frame is two strips of wood (called lippin patti localy) tied together with a long piece of rubber band. I used this calculator (http://lloydhassell.brinkster.net/rcgroups/t-copter%20dimensions%20calculator.html) by Stunt Double (http://www.rcgroups.com/forums/showpost.php?p=18798387&postcount=15) to calculate CG and tail boom length.

For yaw I’m using RcExplorers mechanism, and of course everything is fixed using zip ties.

Motor: 2830 1000kv
ESC: FLY PRO 25A
Controller: HK v2.1
Firmware: KapteinKUKs v1.5

Flew it today, just had to reverse yaw gyro, not very stable with all pots at 50% but still flyable. Will keep playing with pot settings and post the result here. No video yet, will try to get some tomorrow.

Good work Amit..Will catch up with you guys next weekend..

Safe Landings..

Fantastic build. Looks refreshing out of traditional multis. Waiting for video.

Nice build!  :hatsoff: Good to know it flies well!

Thank you guys :) it flies but not very well, which mostly is because of improper pot settings. Check out the video. Its very difficult to control.

Dharmik, any tips to achieve good pot settings :headscratch:

http://www.youtube.com/watch?v=wpspZL6tSg4

not able to view video. says its private :)

edit: opens now  :)

Wow it flies great. I think wind makes it unstable but it looks very well tuned. As i know for these(t-copter, tri, quad) firmwares pot settings are
roll pot - P gain of roll/pitch
pitch - I gain of roll/pitch
yaw - P gain of yaw while I fixed to 0.2
I have mine set to
P Gain 40-42%(above that it oscillates with non flashed escs)
I Gain 10% (they call it heading hold)
Yaw 80%

In my case 40-45% was soft spot for P gain. I kept my I gain between 1-15% and it gave me good hover capabilities. Above 20% you will get heading hold capability for acro flight. Interesting thing i found about yaw is if you reduce gain below 55-60% it shows ascend/descend with respect to rudder inputs, so i kept mine above 60-70%. I am using rubber grommets(got from old dvd player) and nylon rubber to mount board(no nut-bolts) it works fine.

Thank you for the tips Dharmik. From your inputs, it looks like i might have roll set a little high And yaw to low (40-45%). I'll play with the settings and post results here. Right now i just have the board tapped on the frame, its was just temporary. The rubber grommets idea sounds good, I'm sure i'll be able to fins something like that in my junk box :)

Nice stuff..  Its being heavy used for aerial photography.. A friend just picked up his t copter for cinematography..  Good job guys

After breaking two servos, I've now replaced the tiny 12g metal gear servo with a futaba s3003. Flew it today and was getting much better yaw controll. Have finally managed to trim the pots for a nice and stable level flight. Had tones of fun flying the t-copter today, had a few crashes also, the final broke the left wooden arm but I came back home very satisfied :)
Will build a new one with foldable arms now :thumbsup:

Pictures of my crashed tcopter and detail shot of yaw mechanism with standard futaba servo.

Dimensions for my new copter attached, measurments in mm.
Folding arms and canopy to protect electronics.

Some shots of the completed t-copter.
I used a rings of pvc pipe for temporary landing gear as i didn't had foam. But they turned out to be the best landing gear I've build, little bouncy tho. This is how i'm gona build landing gear for all my future multicopters.

Maiden flight video by Ankur
http://www.youtube.com/watch?v=SoPqfD2YSRs

Great. Really really stable. Is the yaw drifts?

No, its all good now. The only thing that requires tuning now is my flying skills :) Later that day I was able to hover at a spot for one full charge of 2200mah battery :thumbsup:

Hello Guys
 I am facing some problem with my T copter. When I connect the receiver to the HK KK board it doesn't respond and light blinks. please help

please guys

= Rx is not bound to the Tx.
Follow these steps:
power off receiver
power off transmiter
insert bind plug onto BAT pins
power on receiver
light will blink
put transmitter throttle to zero position
hold bind and switch on transmitter
hold until binding is made
usually just a couple of seconds

Make sure you connected an ESC and a motor to your ESC to hear the arming beeps.

I've now reduced the size of my t-copter. PFA image showing new size in mm. Using KapteinKUKs v1.6 firmware and now.
http://www.youtube.com/watch?v=jRZ5sHS5YIw

Lovely, convincing video Sir! She seems very stable.

Impressive video sir and best part is it's HK board giving this stability.

lovely sir

Thank you guys, but please don't sir me  :)
Did some loops today. Was such an adrenalin rush. Will try to get video next weekend.

There are so many RCpeople i see in this video with their cars, planes and radios, i am sure they are also registered here with one or other name!!! It seems like RC get together. Planes are flying around..

That is a typical flying day at the Baner flying field in Pune. Right SLS ?

@Dharmik, yes most members are here on RcIndia. Actually people first find RcIndia and then Pancard club field  :thumbsup:

@Anwar, Yes you can say that, but this is barely half the turnout we get usually :)

Now on tricopter 1.6 Acro by KapteinKUK modified by pug398. Check out a video from today's flying session.
http://www.youtube.com/watch?v=j7WtgjfjBLU

 {:)} {:)} good stuffs nice flips and rolls..

Wonderful flying sir. You have tamed it.

Wow!  SunLikeStar.  You must be Warthox's bro for sure.  Have to beat that feat.  Excellent flying.  Like that confidence.
Can you please give me the T's stats?

Thank you guys!
This multirotor madness has totally gone into my head now and I'm just loving it :) thanks to many many helpful posts by Dharmik  :hatsoff:

@dreamfly I get 9 mins of hovering or 5 mins of acrobatic flying :thumbsup:

PFA my final dimensions in mm. I'm still using the same electronics that I started with, but reposting it as my final setup.
Motor: 2830 1000kv (http://www.himodel.com/electric/HiModel_1000KV_Outrunner_Brushless_Motors_W_Prop_adapter_Type_A2212_13.html)
Prop: Slow Fly Electric Prop 9047 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=22444) on right hand and tail. Slow Fly Electric Prop 9047R (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=22445) on left hand (looking from tail side)
ESC: FLY PRO 25A (http://www.himodel.com/electric/FLY_PRO_Seires_25A_2-4S_Brushless_Speed_Control_Type_FLY-25A-PRO_SB.html)
Controller: HK v2.1 (http://www.hobbyking.com/hobbyking/store/__19534__HobbyKing_Multi_Rotor_Control_Board_V2_1_Atmega168PA_.html)
Servo: Futaba Standard Servo s3003
Firmware: KapteinKUKs Tricopter v1.6 Acro modified by pug398
Battery: Turnigy 2200mAh 3S 25C Lipo Pack

AUW: 930 gm
Frame weight: 240 gm

Sir i am also getting 8-9min of hover time from my 2200mAh 25C lipo.

Thanks SunLikeStar for posting.

Hello Friends!!!
 Today itself I flew my T-copter for the first time.It was amazing.It was flying nicely. I didn't had much experience of flying it. Requires some trimming. The landing was very bad. Both time times I landed it in shrubs.But still it flew nicely. Please look at the video

http://www.youtube.com/watch?v=LDwWZ0DfQqQ&feature=youtu.be (http://www.youtube.com/watch?v=LDwWZ0DfQqQ&feature=youtu.be)

@ ved,  Great start... especially with a Tri-copter which is slightly difficult for a beginner.  But don't you have a ground nearby?  I see u flying very close to the electric lines?  or even a remote beach?

Thanks for reply dreamfly. I am going to start flying at our local ground.

Ved

Please be careful as to where you fly. You are flying dangerously close to people and that too when you have not mastered the T-Copter.

Please keep a safe distance between the people and the T_copter. Multirotors can cause serious damage if not handled properly.

Fly safe

Hi
am using odin2210 1200kv 800gm thrust
hobbywing skywalker 40A ESC
kkmulticopter blackboard V5.5
Firmware tricopter 1.6 Acro by KapteinKUK modified by pug398
SANWA metal gear digital servo

am hiving problem in stabilizing the tricopter...
Ill post the pics...
and all the motors r not running at same time...tried to do with trims...
Need help...
Thank you

Hi Vtol, as discussed over PM you need to calibrate throttle range of your ESC. You can calibrate one ESC at a time by disconnecting the signal connector from the control board and connecting it to a receiver. I did a google search for your ESC name and got link to this user manual which has instructions to calibrate your ESC's throttle.
http://www.hobbywing.com/uploadfiles/sx/file/manual/HW-01-SW.pdf
 

I have calibrated as mentioned....wen its  run individually it goes from 0 throttle to max....but wen connected to d board, all 3 motors start at diff time...
and also tel me how to do stick centring....

Guys, why no kk2?
kk2 is awesome. I wont even compare it with the kk.

Anyway, good first flight.

Am in bangalore and thr is no availability of kk2 nearby....
tats d reason i got this....

Hmm...ok
but this build is good. :)
Are you a engineering student?

thing u r seeing is done by SunLikeStar  am doing a similar design....ya i am a engg student...am doin for my colg project need help in stabilizing...ill make a video tmrw n post mine....

this is how my T copter looks...
right now its without the smiley balls :P

hmm nice. upload more vids buddy :)

ya it luks nice but not wen it flies....
I hav a Q
as said in the setup guide, in step 2 for calibrating the throttle range on the ESC’s
http://rcexplorer.se/educational/2011/02/kk-tricopter-setup-guide/
should it be done like this or should be done individually?
Please help

No This type of calibration is done for all connected ESCs together.
For the individual one you need a programming card. :)

I have all ESC's connected together....from left ,right and rear motors...so should i have to do it altogether or individually?
FYI I have done both but dint make all d motors to run together...

Try calibrating the ESCs.
Change the minimum throttle in your kk board to higher value.

Vtol, whats the update? Have you calibrated each esc separately. have you set all gyros at 50%. Please post a video of whats happening.

I have calibrated ESC's seperately but wen i run the motors with prop off each motors start at difff time...ill test it tomorrow and then ill post the video... can u tell me how to do the stick centering?

Yup, what radio do you have?
change the subtrims.

I have sanwa SD 6G... I know trims, its thr on display...I dint get the subtrims...whr is it?

OK I got it figured...yaw pot was reversed...so wen i turned it to min i was making it to max...so i was unable to calibrate ESC's with kkboard...
now all the motors r starting up at a time...
Ill be testing it today n post the video...
Can anyone tell me how to reverse the yaw pot...?
I get confused wit one pot reversed and others in normal
THANK YOU

here is the video....
http://www.youtube.com/watch?v=f9wF9ujelvc&feature=youtu.be

I was the only one in terrace so i had to handle the Tx and also d cam...It dint come out well
but later without cam i tried to fly it went all over the place n neatly swept the whole place.... :P

I'm glad you are making progress Vtol. Please do all your testing in an open field, crashes will more forgiving and you will have more confidence inspiring flights as you don't have to worry about hitting something.

thr r no much open fields around...one is too far...n just for 10 min flight i cant go thr...so wanted to hover perfectly n then go to a open field n fly it..

here is my first flight
It was really awesom!!!
https://www.youtube.com/watch?v=s3ui7-J5TuA

Nice. But i guess balancing/acc calibration issues exist. All the best.
Cheers!

ya i need to tune it.....
i ahve taken another video...it was stable in it...
ill try to upload it

SunLikeStar

Sorry for the delay he he  ;D . Amit performing stunts on his T-Copter.

http://www.youtube.com/watch?v=Yg3-lITqPxc#ws (http://www.youtube.com/watch?v=Yg3-lITqPxc#ws)