Today I reversed engineered the control board of the RC Buggy and the results are the schematic attached. I was only interested in the Motor Drive CCT so thats all that is drawn. It looks fairly straight forward to hook up the PICAXE to this board, although the main Driver Transistors are TO-92L type packages, so I suspect the duty cycle of the drive will not be continuous as there are no heat sinks etc.
While I was at it I removed the RF Receiver Daughterboard and the decoder chip (U1 in the schematics), so now the board is all ready to go.
(Sorry about quality)
Buzzbot Motorcontroller Schematic
Similar Posts:
- BuzzBot
- Buzzbot – Circuit Design
- EBAY Trigger Receiver PCB
- Buzzbot – Odometry Task
- RFM12 FSK Library – Alpha Release
PDF 
January 25th, 2006 at 9:32 pm
So did you test it out by applying a high to the fwd/rev pins? Did the TO-92L’s warn up during testing?
Keep the good news comming
Cheers!
January 30th, 2006 at 1:01 pm
no testing yet, probably will start as soon as I get the encoders finished.