I have recently been playing around with some WS2812 addressable LEDs connected to a microcontroller. I wanted to have some sort of input device to make things more interesting. Buttons stuck into a breadboard are all well and good, but they can get a little unnerving and prone to contact problems. So I made this game controller lookalike so that whenever I need a couple of buttons on a circuit i’m experimenting with, I can simply connect it. Another possible use for it could be a controller for jogging my cnc machine.
I used maple and robinia wood and cut it out on my eShapeoko cnc milling machine. At first I did not give the wooden buttons enough play, they were a little to big so I had to sand them quite a bit.
The circuit is really simple, only consisting of a parallel in serial out shift register a few resistors and buttons. Contrary to the schematic below, I use 74HC166 and not a 74LS166 enabling the circuit to work down to 3.3V and not just 5V.
Here you can download the all the files I used for this project: