Traffic Signal
Apr 22, 2018
1 minute read


Learn how to mimic traffic lights with 3 LEDs.

This project comes with code and instructions for both arduino and raspberry pi.

Both versions do the same thing, so you can also compare how these 2 programs differ.

What you need

  • 1x breadboard
  • 3x LEDs: Red, Yellow, Green
  • 3x 150 ohm resistors
  • 1x Arduino or Raspberry pi
  • Jumper wires

Repository and detailed instructions

See iyp-uk/traffic-signal on github.