After a few crashes with the carbon fiber arms version, i rebuild the quad from scratch using the following components for the frame:
2x 1.5mm Glass fiber 70×70 center plates
Alu arms, 160mm lenght 10x10mm
T-Rex (don’t rememeber which one…) langing gear with 5mm glass fiber extra lenght skids (the original skids died shortly after being installed:) )
Little plastic squared box on top containing cpu board, sensors and receiver. The electronic is dampened using four self made silicone rubber dampeners
The arms are tied together between the two center plates using m3 bolt and screws.
As you can see from the pictures, one of the motor was slightly modded: one of the wires was broken, so i rewound the motor and soldered the tiny wires to a tiny pcb board glued using epoxy to the mounting shaft. The connection are then made from this little pcb board so that there is no possibilities to break again the motor wires.
Yesterday i finished the controller board prototype for the new NanoQuad i’m building.
the board measures 60x18mm (it is a lqfp48 proto board i bought from dipmicro.com)
a max682 to raise the single lipo (4V to 3V) supply to 5V;
4 SI2304 N Mosfet used to power the brushed motors;
In this first phase i’ll control it using a DSM2 compatible Six channel radio from HobbyKing.
The gyro is simply a WiiMotion+ board.
Future versions of the quad will implements:
Bluetooth connection and remote control instead of the DMS2 Radio;
Smaller ITG3200 Gyro board;
The bluetooth radio will connect wirelessy the nanoquad to a controller board that contains an lcd, an atmega8, a bluetooth module and a port for an wii classic controller to be used to drive the quad.
The lcd will make able to change parameters and for a simple “telemetry”.
Here are some pictures (unfortunately i missed the finished controller board alone).
Update 24 March 2011: here is the MultiWii (thanks To Alexinparis ) http://wbb.multiwii.com/index.php software modified to drive directly four mosfet to power brushed motors (be aware, the software was only used to test the setup, never flyed, so use at you own risk.)
I would like to be able to use my quad indoor, so i can practice everytime i want, so i started this project, in parallel to the bigger one.
Today the 4 brushed motors arrived, (Walkera UFO#8 motors, bought from Helipal here) so i started to arrange some test frame. It is simply made by 2 little 3mm carbon rods 140mm motor to motor.
I attached the motor to the arms using some shrink tube. Also the two arms are tied together using two little piece of shrink tube.
Frame and motors do weights 17gr.
As the bigger brother I’ll use a custom board with atmega328, four mosfet (to power the motors) a 3v -> 5v dc/dc converter to be able to power the 328 using the single lipo used for this model.
Now i have to wait for props and lipo from HobbyKing, atmega from an ebay seller and some other electronic components (and also a small smd prototiping board I will use to mount the circuit) from dipmicro..
Mouse is only for size comparison, near there are the DSM2 receiver and WiiMotion plus board.