[nicexe]

Looks like a deconstructed optocoupler while also using an optocoupler.

This is one of these rare instances where you can have hardware recursion.

[seiferteric]

Took me a bit to see what it was actually doing. In the doc folder it has some pictures. It appears to be sort of a linear actuator that pushes the spaghetti forward or backward, which makes/breaks the light path in the optical sensor on the other side.

[yonatan8070]

Oh

I didn't read beyond the README and I thought it's using the sphagetti as a fiber optic cable with an LED on one side and a photoresistor on the other