Designed PCBA to replace existing PCBA from a Tesla Model 3 Puddle Light with WS2812B RGB LED, ATtiny85, 5V LDO, resistor and capacitor. Anytime the door is open, RGB LED lamp at the bottom of the door, facing the ground, fades through the colors in a 6 second loop. Before it was just a boring white light! My first custom PCB design. 30 boards for $21, delivered in 10 days from China.
Eric's Project Blog 