While there’s no PCB involved, [designer2k2] built a desktop “hollow” Christmas tree ... that really makes this tree. The code cycles through colors and some light chaser effects, as ...

Chicago's Christmas tree lighting ceremony took ... Here's what to know about this year's tree: The tree will remain lit through Jan. 8, according to the city's website. The tree is a 53-foot ...

For some things, hooking up a relay to a microcontroller ... LED lights to wrap around a Christmas tree, but didn’t want to spend time manually mapping out each light’s location.