Laser cut marble run that gives a computational state and allows for adding and incrementing. 4Bit. Material 3 mm in vertical elements, horizontal elements can also be done in 4 mm. Marbles 16 mm Edited in Inkscape.

Idea taken from woodgears.ca https://woodgears.ca/marbleadd/ Youtube: http://youtu.be/GcDshWmhF4A

The design was modified to fit a laser cutter and European glass marble standard size. I used 4 sheets of DIN-A4 plywood, a bunch of fine screws (2.5 x 20).