Key Features • PCB • Firmware • Credits • License

• ESP32-C6 microcontroller with Wi-Fi 6 and Bluetooth LE
• 16MB flash (W25Q128JVP)
• USB-C PD up to 100W with the FUSB302B
• Switchable 5V/12V LED output from a 10A buck converter (LM61495), selected in software
• Addressable LED pads (VCC / SIG / GND) for WS2812B, WS2811 and WS2815 strips
• IMU and Barometer - BMI323 (6-axis) and BMP581 pressure sensor
• PCB trace antenna with an impedance matching network
• 3.3V buck converter (AP63203) for the logic side
• ESD protection on the USB data lines
• Reset and boot buttons and a mounting hole
• 4-layer PCB design with optimized RF layout and routing

Designed in KiCad with attention to RF design and high current power delivery. The board is 4 layers with a solid ground plane under the ESP32, the flash and the antenna feed, and the LED buck follows the layout in the LM61495 datasheet.

The boilerplate in firmware/main.py is written in MicroPython. It advertises over Bluetooth as Ledify with the Nordic UART service, so any BLE UART app (nRF Connect, Bluefruit Connect) can control the strip.

The output always boots at 5V and off. Set NUM_LEDS and MAX_LEVEL at the top of the file for your strip.

1. Flash the MicroPython ESP32-C6 firmware over USB with esptool
2. Copy the boilerplate to the board:

mpremote cp firmware/main.py :main.py

3. Press RST and connect to Ledify over Bluetooth

To run the parser self-check on your computer:

python3 firmware/main.py

This project uses:

• KiCad
• Blender for 3D renders
• MicroPython

• Cyberboard – A Raspberry Pi Pico-sized STM32 development board
• CyberCard – A Cyberpunk themed NFC hacker card
• Ember – USB-C PD Powered Hotplate
• Trace – An ruler for engineers
• Athena – A flight controlelr with a triple MCU architecture

MIT

notaroomba.dev  ·  GitHub GitHub @NotARoomba  · ·