The Arduino Pro Mini used to control the traffic light is not only responsible for playing the tones through a piezo speaker, but as you might expect, for firing off the relays which ultimately ...

A case will protect your Arduino and ensure your sweater has the chance to light up the room for many holidays to come.

The build is based on a commercially available party light, but with some upgraded components the final product is brighter and more dynamic than it was stock.

TK has combined a PIR with an Arduino to create a smart safety light for the house or workshop. Follow along as this gets built out into a more extensive project.