Arduino Traffic Light with Snap-Fit 3D Case

This project was inspired by the idea of creating a simple and fun way to understand traffic light logic.

I designed a snap-fit 3D-printed case that anyone can easily assemble, and I used 5mm LEDs because they are cheap and easy to find. The goal was to make a compact and beginner-friendly version of a traffic light system that can be used in classrooms or maker workshops.

It doesn’t require soldering, which makes it accessible for younger students and hobbyists.

You can upload the code to an Arduino Nano or Uno and simulate a basic intersection logic with ease.

Feel free to remix or upgrade it—this is just the beginning!