The Arduino traffic light is a fun little project that you can build in under an hour. Here’s how to build your own using an Arduino, and how to change the circuit for an advanced variation.

Complete code, wiring diagrams and written version of this tutorial can be found at: https://www.makeuseof.com/tag/arduino-traffic-light-controller/

We’re using the Elegoo R3 Start Kit: https://amzn.to/2XZuq88

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