The XMAS is a PCB decoration suitable for hanging on your Christmas Tree. It comes with LEDs that blink in various patterns and runs off a single coin cell battery.

The XMAS comes as a kit of easy to solder parts: It contains only a few parts and is the perfect kit to get started with soldering.


  • Shaped as a star, with a mounting hole so that it can be hung from a string
  • Four shiny green LEDs that blink in various patterns chosen randomly
  • Runs on a single coin cell battery
  • Open Source Firmware (available at GitHub)

Here is a video of the blinking LEDs in action: