The tank project was fun while it lasted. The final state was:
- Turret rotated - this was done using another stepper driver chip.
- Including touch!
But there are/were a number of problems:
- Battery life was dreadful. 15 mins if I was lucky, on a decent 7.2V RC car battery.
- This was down to the high drain of the motors combined with the relatively high drain on the BifferBoard with WLAN gear, etc
- And the crappy 5V regulator didn't help. It got VERY HOT (burn'ya hot).