While playing with an Arduino-based light-notification system for webpage errors, the team realized they could use the same Arduino technology to create an interactive light-up Christmas tree.

The Arduino Christmas jumper has been created using an Arduino Uno, Arduino Mega, and Adafruit Flora development boards.

Arduino controlled Christmas lights! It all started because [Anx2k] had some leftover LED’s from one of his other projects, so he decided to make use of them as permanently mounted Christmas lights.