Im experimenting with this at the moment and thanks to everyone in the robot community thats helped so far. When Ive finished Ill post everything online including the pic code and means to download to your pic for pennies. So far Ive made a simple 5Amp weapon switch using a PIC for under a fiver. A beefy weapon pic controlled Rx switch (40A) for under a tenner, a single channel speed controller 30A continuous using PIC/H bridge mosfets for about £12. Im still developing a single board two motor controller with 8 mosfets and two pics that hopefully will cost only about £35 to make. Why am I doing this? I run the Young Engineers Club at my school and my students need cheap stuff! And Im sick of seeing kids have to shell out £75+ for decent speed controllers.
Ive spent the last four days building prototypes and the pile of dead components is growing :sad:
Ill put up all the How to stuff on my website when its sorted, including the PCB masks.