An IoT Christmas Tree You’re Invited to Control | Hackaday
We played with the tree a bit, and the web interface is fairly powerful. For each LED, you can select either a random color or a keyframe-defined pattern. For the keyframe LEDs, you can create a number of “keyframes”, each of which is defined by a color and a transition, which can be either linear, quarter sine wave, or instantaneous (“wall”). Additional keyframes can be added for each LED, and if don’t specify a pattern for all the LEDs, the system repeats those you have defined to fill the entire string. There are also a few preset patterns you can choose if you prefer. If you, too, want to play with the tree, don’t delay: it’s only available through the first week of 2019!