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Mar 17, 2012, 06:18 AM
Registered User
Discussion

Advice needed for first quadrotor building


Hi all,
I'm a newbie and going to build my first quadcopter. Below is my proposed configuration:
Frame:
Homebuilt using 1x2 cm aluminum, rotor to rotor distance is about 35cm.
Motor:
Turnigy 2209 28turn 1050kv 15A Outrunner, $11.83/ea, http://www.hobbyking.com/hobbyking/s...Outrunner.html
Propeller:
8x4.5 propellers, http://hobbyking.com/hobbyking/store..._SF_4_pc_.html
ESC:
TURNIGY Plush 18amp Speed Controller, $11.9/ea, http://hobbyking.com/hobbyking/store...ontroller.html
Battery:
ZIPPY Flightmax 2800mAh 3S1P 30C , $17.76, http://www.hobbyking.com/hobbyking/s...3S1P_30C_.html
IMU:
Sparkfun IMU Digital Combo Board - 6 Degrees of Freedom ITG3200/ADXL345, $64.95, http://www.sparkfun.com/products/10121
Other parts:
TX/RX:
Hobby King 2.4Ghz 6Ch Tx & Rx V2 (Mode 2), $22.99, http://www.hobbyking.com/hobbyking/s...2_Mode_2_.html
Battery charger:
Turnigy Accucel-6 50W 6A Balancer/Charger w/ accessories, $22.99, http://www.hobbyking.com/hobbyking/s...cessories.html
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.
Thanks.
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Mar 17, 2012, 06:25 AM
Suspended Account
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, 06:26 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, 08:49 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, 07:44 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 ><.
@zerosight:
Thanks for your advice, i haven't bought the battery. I will consider the Turnigy nano.
Mar 18, 2012, 07:57 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, 08:25 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, 08:33 PM
Registered User
CheckSum's Avatar
Quote:
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 09:37 PM.


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