Snowflake: David's "Yuletronics" project.
A christmas decoration shaped like a snowflake, with beautiful white LEDs. Also the most ridiculously shaped PCB I've ever had made.
Uses the TI TLV61220 boost SMPS controller to generate 5V from a single alkaline cell. Alternatively powered via MicroUSB-B. Controlled by STM32F042, programmed using TagConnect SWD or USB DFU.
Based on Adam Greig's Christmas Tree
Made in KiCAD 4.0.4.