We've made a couple of simple control boards ready for prototyping with some old FRC/VEX components... It ain't pretty but they're free since we had old Victors and Vex equipment just laying around.. Also makes for a good pre-season project for some students. We have like 4 versions of these around now.
Here's our simplest board meant to control 2 motors...
Here's our larger board that can control up to 8 motors... (get's tricky with programming and control with the Vex controller - but if you run a 4 or 6 CIM drive train, those are just mapped to a couple of PWM outputs)...
Finally our latest version has the modern FRC components... the programmers do a bunch of code testing on this thing... As well as testing the new talon on-board functions for PID and such.
