About this 3D model

RGB LED ring based christmas tree based on the SK6812. Rings Each ring has 4 connectors, data in, data out, GND and 5V. The first/bottom ring data in is connected to the GPIO of the ESP32 (via the 74AHCT125). The data out is connected to the next ring on data in. 74AHCT125N Used to connect the 3.3V of the ESP32 side to the 5V data side of the LED rings. datasheet Diagram See https://wled.discourse.group/t/esp32-sn74ahct125n-wiring-max-length-data-cable-to-sk6812/2294 but I used a 470 ohm resistor as shown here . Mechanical parts M3x12 M3 threaded inserts Electrical parts SK6812 Digital 5050 RGB LED Ring - 93 LEDs - Black Wemos C3 Mini - ESP32-C3 - v1.0.0 (discontinued, use v2.1.0 ) SN74AHCT125N 4-channel Level Converter - 3.3V to 5V - 14-pin DIP Mean Well Power Supply - 5V 3A - Switching Power Supply - RS-15-5 IEC C14 connector with fuse (same as your PSU on the PC) (no clue where I bought it, looks like this one but with on/off switch)