Here's a really fun Christmas-themed project. It's an all-digital-hardware LED Christmas tree we're calling the Christmas Tree O'Digital Logic. The tree itself is composed of 64 LEDs built into a spiral sitting on a piece of protoboard. Underneath, the controller uses shift registers and a 555 timer to create two modes of display: a predictable pattern and a random pattern.
We're also running a Kickstarter campaign to fund our second free online electronics course, "An Introduction To Digital Electronics." We have just 4 days left to raise $2,124. We're trying to spread the word about our efforts and need everyone's help!