donderdag 27 oktober 2011

Very cheap quadcopter frame configuration

I'm getting all the pieces together for my ever so cheap quadcopter. I've been working on a multiwiicopter for some time using components I had laying around. It never got stable enough to stay up. Nothing related to the multiwii design. Everything to do with my bad and quick frame mash-ups.

Biggest problem for me is a lack of time. And I don't want to spend too much money on a RTR quadcopter. So I found something in between. This is my setup:

1x Rusty's MQ-1 Frame Kit @ $35,00. With shipping to my door (add another $7,00) it was $42,00 or around €30,50

Disadvantages of this frame is that you can only use it in a Quad rotor setup. Other than that I couldn't find any issues. It's cheap if you compare to other frame prices. It doesn't include the booms but these are very cheap at for instance hobbyking. The kit takes standard 450 booms of 12mm (or any other 12mm material). You can choose for square tubes or non pre drilled motor mounts on ordering the kit.

4x HK 450 booms or any other 12mm booms. At HK they are $1,48 per boom with a shipping weight of 50g but the length requires an additional 75g box so total weight would be around 275g which makes shipping $6,90 + 4* $1,48 is a total of just below $13,00 shipped or € 8,50.

1x KKmulticontroller board for $32,64 shipped. The one I linked includes a controller and wires. If you only need the board since you already have a programmer you can go for the cheaper board only option. Search the website I linked. € 23,25 delivered.

4x ESC's, choose any. The cheapest would probably be the HK SS Series 15-18A. Shipped these will cost you around $ 30,60 or € 21,80. Another good choice for slightly more is the Plush series.

4x motors, choose any. For example the KD 2028M motors form HK. 4 of these shipped is just below $53,00 or € 37,75. Another good choice for not that much more money is the KD 2022L motors.

You could get it all a bit cheaper by ordering the motors and esc's and booms all together and safe on shipping. These prices are just a reference. Total so far is: € 121,80!! And that is including all the electronics and a complete frame!

All you need is a charger, some lipo('s) and a tx/rx combo. All things any RC guy should already have. If not check the links for some good allround options.

Some more pictures of the finished Quad. I still have to fine tune everything but I can hover it so far:

Overall picture

Motor protection, later replaced by larger diameter foam, same idea

KKMulticopter v5.5 controller board 

A basic HK450 heli landig gear and lipo

detail shot of motor mount, check navigation led on arm

The complete frame assembled

After initial flights I changed the motor mounts towards this setup, much better propeller mounting and better motor protection