This is an Arduino-based machine that detects multiple button presses and symbolizes the first button pressed by a shining LED.
It consists of 6 buttons, 6 leds and 1 piezo speaker connected to an Arduino Uno via a self designed Arduino Uno Shield.
You can find all stls in the parts folder. They can be printed on most common 3d printers (used and stock ender 5).
The circuit diagram, breadboard diagram and the gerber files for this project are located in the electronics folder.