Advice needed for first quadrotor building - RC Groups
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Mar 17, 2012, 07:18 AM
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Advice needed for first quadrotor building

Hi all,
I'm a newbie and going to build my first quadcopter. Below is my proposed configuration:
Homebuilt using 1x2 cm aluminum, rotor to rotor distance is about 35cm.
Turnigy 2209 28turn 1050kv 15A Outrunner, $11.83/ea,
8x4.5 propellers,
TURNIGY Plush 18amp Speed Controller, $11.9/ea,
ZIPPY Flightmax 2800mAh 3S1P 30C , $17.76,
Sparkfun IMU Digital Combo Board - 6 Degrees of Freedom ITG3200/ADXL345, $64.95,
Other parts:
Hobby King 2.4Ghz 6Ch Tx & Rx V2 (Mode 2), $22.99,
Battery charger:
Turnigy Accucel-6 50W 6A Balancer/Charger w/ accessories, $22.99,
Would the configuration be proper regarding the frame size? I'm a little worried since the total weight without frame is upto 630g already, I haven't constructed the frame but i assume it will weigh about 400g, so my quad will weigh about 1,1-1,2kg including other accessories. Would it be too heavy? Later, I want my quad to be able to do some aerobatics if possible.
I would appreciate any comment and advice.
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Mar 17, 2012, 07:25 AM
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good god, how can sparkfun charge that much for 2 sensors that cost $6 combined and keep a straight face.

even this is a better value (assuming you want to stick with obsolete 8bit stuff)

What do you plan to hookup that "IMU" to?
Mar 17, 2012, 07:26 AM
Quad lover.
chaosdestro0's Avatar
If you are using multiwii, you can pickup an arduino nano which imo is easier to work with than a mini pro.
Mar 17, 2012, 09:49 AM
Registered User
Those motors could handle 9" props. Do not expect to much from this battery, it might limit your copter noticeable - the given specs are mostly overrated. You only get what you pay for. Try Turnigy nano or gens ace instead.
Mar 18, 2012, 08:44 AM
Registered User
Thanks everyone for your feedbacks.
@timecop and chaosdestro0:
Since this is a school project I have to build a flight controller board which uses an ARM mcu. The MultiWii is a really good suggestion however my supervisor probably wont be happy if i use it. I chose the Sparkfun breakout board cause i want to do as less soldering as possible. Sparkfun must have earned a lot of money from noobs like me ><.
Thanks for your advice, i haven't bought the battery. I will consider the Turnigy nano.
Mar 18, 2012, 08:57 AM
Registered User
David Jenkins's Avatar
If this is a school project, PLEASE look up the safety issues, and also the gory pictures of what these multirotor props can do to the unwary!

These beasts are great fun, can give a lot of pleasure, etc. but they can do great harm if care isn't taken.

Not trying to put a damper on your project - just saying that you do need to think about what you're doing and consider the risks.

Oh - and I hope that you do have great fun, and enjoy yourself! (without injury)
Mar 18, 2012, 09:25 PM
Registered User
Thanks David, I did read the safety issues and will definitely check them out again when doing preflight testing and maiden flight (hope i will get there).
Mar 18, 2012, 09:33 PM
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CheckSum's Avatar
I chose the Sparkfun breakout board cause i want to do as less soldering as possible. Sparkfun must have earned a lot of money from noobs like me ><.
Don't feel too bad...I don't know why, but I still buy some stuff from them (I should know better). I couldn't believe this (see attached photo) when I bought a 3.3V FTDI! I sent them a pretty nasty letter about paying top dollar and receiving this kind of poor quality.
Last edited by CheckSum; Apr 05, 2013 at 10:37 PM.

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