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« on: April 10, 2012, 12:03:00 AM »
hyd_quads
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I've been waiting since a couple of months to write this post and I'm very excited now! I've just finished making my first quadcopter (there was a "failure" quad before this) using the CRIUS MultiWii controller board (v1.9). Here's my build log:

The List:
1. HK dt700 motors x 4 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6246)
2. HK 18-20A SS series ESCs x 4 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6548)
3. Zippy Flightmax 3S1P 3000mAh x 1 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8851)
4. 10x6 props (3N+3CR) x 1 pack (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11333)
5. XT60 connectors (5M+5F) x 1 pack (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9572)
6. XT60 two-in-parallel harnesses x 4 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10265)
7. 3A UBEC with Low-voltage buzzer x 1 ( (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=22494)
7. Aluminum square channels x 4 (From rcelectro.com, I can't find it on the site now)
8. 3.5mm Gold connectors x 12 pairs (http://thehobbyshop.in/index.php?main_page=product_info&cPath=9&products_id=51)
9. Aluminium plates x 2 (From a local store that sells kitchenware, utensils, etc.)
10.Heat shrink tubes 5mm x 2mtr (http://www.nex-robotics.com/products/electronic-components/heat-shrink-tube-5mm.html)
10.CRIUS MultiWii controller board (http://www.ebay.co.uk/itm/MWC-MultiWii-Lite-lightweight-version-4-axis-flight-control-board-QUADX-X4-         /220907041736)

I use the basic HobbyKing 2.4GHz 6 channel Tx and Rx.

Build Log

I thought of purchasing a hand-drill as suggested by Dharmik, but bought an electric drill from ebay so that it can be used for other works at home too.

The packages arrived one-after-the-other without any problems at cutoms.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06718.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The Aluminium parts for the framework:

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06720.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The power harnesses

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06729.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


This is how I mounted the motor:

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06741.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The "QUAD-X" structure

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06737.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The battery is placed between the two plates.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06751.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The battery is secured using shoe lace. (Sounds cheesy, eh? I couldn't find anything better than this!)

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06757.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


Plastic spacers (made out of a ball-point pen's body) ensure that there is enough space between the plates to accommodate the battery.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06755.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


A switch to toggle ON/OFF the WHOLE system.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06761.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The Receiver is attached to the bottom surface of the quad.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06763.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


I saw people mounting their contoller boards on soft and spongy surfaces. So I tried it out.

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06772.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


So after putting everything together, this is how the central-portion looked like:

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06782.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06768.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


A quad without LEDs.......... I wouldn't want that at home!

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06788.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06795.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


The LED strips

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06780.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


And I was so excited that I didn't even test-fly it! I'll do that by this tuesday (11-apr) and post the videos, pictures. (And because this is my first quad, I may also expect to have some troubles. I will discuss them, if any.)

So, any comments and suggestions???
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« Reply #1 on: April 10, 2012, 12:19:40 AM »
hyd_quads
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http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06740.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


Fully assembled (without LEDs)

http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06781-1.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06787.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


http://i896.photobucket.com/albums/ac166/vineet_punyamurty/DSC06793.jpg
Here's my first QUADCOPTER!!! (MultiWii v1.9)


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« Reply #2 on: April 10, 2012, 12:21:27 AM »
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 Clap {:)}Really beauty it is ....I would love to build it , one day.
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« Reply #3 on: April 10, 2012, 12:23:20 AM »
hyd_quads
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My biggest resource for ideas, plans, etc. was this post: http://www.rcgroups.com/forums/showthread.php?t=1566841
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« Reply #4 on: April 10, 2012, 12:23:45 AM »
hyd_quads
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Thanks RC_DUDE. Smiley
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« Reply #5 on: April 10, 2012, 05:26:31 AM »
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Retreat, Hell!



Nicely builtd! And the LEDs look awesome! Clap
Good luck for your maiden!  Thumbs Up
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« Reply #6 on: April 10, 2012, 09:08:35 AM »
Dharmik
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Wow nice build bro. 1 of ESC looks different i mean diff brand.
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« Reply #7 on: April 10, 2012, 09:41:00 AM »
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Nice build and very helpful close up build pictures Thumbs Up
How do you like the dt700 motor? any specific reason you chose them over dt750?
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« Reply #8 on: April 10, 2012, 12:26:36 PM »
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DT700 runs smoother than DT750. I have used both of them. Also DT750 draws little more current than DT700. But as such I dont feel much significant difference between these two.
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« Reply #9 on: April 10, 2012, 12:32:58 PM »
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Great, thanks! What board have you used them on?
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« Reply #10 on: April 10, 2012, 12:34:22 PM »
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I am using HK KK V2.1 board
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« Reply #11 on: April 10, 2012, 01:18:11 PM »
hyd_quads
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DT700 runs smoother than DT750. I have used both of them. Also DT750 draws little more current than DT700. But as such I dont feel much significant difference between these two.
I heard the lower the kv, more the control (but yes, the kv has to be optimum, not too low). SO I bought dt700
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« Reply #12 on: April 10, 2012, 01:20:20 PM »
hyd_quads
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Wow nice build bro. 1 of ESC looks different i mean diff brand.
Yes, I fried one of the HK ESCs a little back. So at the last moment, I bought this Power HD ESC from Jack's Hobbies, offline. But the different brand of the ESC doesn't matter, at least according to me. Smiley
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« Reply #13 on: April 10, 2012, 01:20:49 PM »
hyd_quads
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Nicely builtd! And the LEDs look awesome! Clap
Good luck for your maiden!  Thumbs Up
Thanks! Smiley
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« Reply #14 on: April 10, 2012, 01:26:24 PM »
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I heard the lower the kv, more the control (but yes, the kv has to be optimum, not too low). SO I bought dt700

You are right. Lower the kv more the control. But in case of DT700 and DT750 kv difference is not much significant unless you are using it for very very precise application. In my opinion, for regular use both the motors perform more or less similar .
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« Reply #15 on: April 10, 2012, 01:30:01 PM »
spitfire
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btw, Nice quad!
Just a suggestion. don't use all led of same color. Use different color depending on you flying configuration + or x. It helps identifying orientation while flying.
And balance props properly. It helps a lot in reducing vibrations.
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« Reply #16 on: April 10, 2012, 01:39:49 PM »
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 Clap Clap Clap
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« Reply #17 on: April 10, 2012, 03:10:59 PM »
hyd_quads
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btw, Nice quad!
Just a suggestion. don't use all led of same color. Use different color depending on you flying configuration + or x. It helps identifying orientation while flying.
And balance props properly. It helps a lot in reducing vibrations.

Good analysis.... I didn't think of the LEDs helping in finding out orientation... The props are to be balanced yet, I'll do that. Thanks. Smiley

Clap Clap Clap
Thanks! Smiley
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« Reply #18 on: April 10, 2012, 03:16:31 PM »
hyd_quads
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Nicely builtd! And the LEDs look awesome! Clap
Good luck for your maiden!  Thumbs Up
Thanks a lot!
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« Reply #19 on: April 10, 2012, 09:11:48 PM »
hyd_quads
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Huh.. All my excitement's lost, I am disappointed. The quad doesn't fly! What do you guys suggest? Balancing the props? Calibrating the ESCs? All my channels are roughly between 1000 and 2000 and centered at 1500. What else am I missing? Sad
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« Reply #20 on: April 10, 2012, 09:18:59 PM »
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What happened bro?
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« Reply #21 on: April 10, 2012, 09:32:35 PM »
spitfire
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Please explain specifically what is problem.
Follow instructions step by step and carefully as mentioned here
http://www.kkmulticopter.kr/index.html?modea=manual
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« Reply #22 on: April 10, 2012, 09:39:16 PM »
hyd_quads
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What happened bro?
This is what that happens. The motors arm, I set the throttle to 100% and they don't provide enough thrust... Maybe the ESCs...?
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« Reply #23 on: April 10, 2012, 09:45:47 PM »
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Ok.. Your motors are DT700, i read somewhere that their response time especially when used for multirotors is less with 3S battery due to low kv and big props. It hovers at above 70% with 3S pack. These motors are for heavy lifters. You have to try 4S but make sure your ESC supports 4S.
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« Reply #24 on: April 10, 2012, 09:50:20 PM »
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Thanks for the reply. Smiley .But HK's test data and test data on 2 other sites shows that a 3S should perfectly do the job... But after seeing the test-fly, the motors didn't seem to be running at their full-capability. I strongly suspect the ESCs. I need to specify their throttle range by programming the ESCs, right? And most sites recommend setting the ESCs to Ni-MH mode even if we use LiPo... I'll try out that too. Anything more that may help? Thanks. Smiley
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