I started on a breadboard, pretty messy but it kinda worked.

When I received the LED's, I glued them into the laser cut parts, now it looks a lot cleaner than on the breadboard.

The schematic of the electronic circuit can be found in the files section. This is how the circuit looks like on a prototyping board.

After screwing and connecting the parts together, the only thing left to do was to finish my code.