When Off Doesn't Stop the Motor

[HaWe]

yes, I'm sure you can do it - I don't. Low level programming either for APIs or for hardware is not my world. My focus is AI and pattern recognition - and some intelligent filters for it.
For the next step I will need to have (or develop) an exact method for positioning and navigation.
An indoor positioning system with sort of radio beacons would help a lot too...