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Signal Builder: DIY Traffic Lights

Traffic Lights cover image

Overview​

In this exciting project, we will transform everyday materials into a working traffic light system! Using cardboard, copper tape/Aluminium foil, and LEDs connected to a micro:bit, you will build your own traffic light controller from scratch.

What you will Learn​

By the end of this project, you will understand:

  • How LEDs work and how to connect them safely
  • How to create circuits using copper tape
  • How to program light sequences using a micro:bit
  • The basics of traffic light systems

What you will Need​

  • 1 x Red LED
  • 1 x Yellow LED
  • 1 x Green LED
  • 1 x Piece of cardboard
  • Copper tape / aluminium foil and glue
  • 4 x Crocodile / alligator leads
  • 1 x micro:bit (version 1 and 2 will work)
  • 1 x Micro USB cable
  • 1 x Battery pack for the micro:bit (optional)

Let's move on to creating our traffic circuit.