Still hunting for the perfect decorations for your Christmas tree or home ... rain or snow included! This color-changing light string also comes with 11 function modes and 4 brightness levels ...

Select from a variety of weatherproof LEDs in different styles.

But [Martin Held] built a super simple LED Christmas tree ornament using the ATSAME51 series micro-controller, which he regularly works with and had on hand, and lots of bi-color LEDs. He already ...