How to Program

1. The program starts with release of touch-sensor 1
2. The cover is opened by motor A, the arm is turned by motor C
3. When the arm touches sensor 3 in the bottom, it is reversed for the second time
4. The cover is closed by motor A

These small programs may help you to return to the start point while trimming the machine:

Note: The idea of constructing this meaningless device is not new and is not mine.
As a kid I saw a metal box with a boxing glove inside working the same way.