Creating an nice big dial knob for the activity board, isn’t that difficult since I own a 3D printer. But to make it a big more special than the average dial, I wanted to add a nice light effect to the button.
A while ago my dad and I were discussing the best ways to control a small model train. As a seasoned model train enthusiast, he was looking for the best way to control a single track train. As an additional requirement, he wanted to show the trains’ speed on a small display … Challenge accepted!