Robin2:
A microswitch with a roller that runs along the wall and the wall keeps the switch pressed.
The robot may fall if it keeps a hold of the wall.
Furthermore, as for the 1st option what type of optical sensor?
Robin2:
A microswitch with a roller that runs along the wall and the wall keeps the switch pressed.
The robot may fall if it keeps a hold of the wall.
Furthermore, as for the 1st option what type of optical sensor?