This project focuses on building a compact WLED driver PCB with USB-C Power Delivery (PD) support. Instead of using a bulky external power supply, the board can be powered directly from a USB-C PD charger, making it ideal for clean, portable, and plug-and-play LED installations.

The XIAO ESP32-C3 is used to run the WLED firmware, providing wireless control, effects, and configuration through Wi-Fi. With a minimal component count and PD capability, this design is perfect for compact lighting projects and learning about USB-C PD integration.

How It Works

The PCB combines the CH224K USB-C PD controller with the XIAO ESP32-C3. The CH224K negotiates the required voltage from a USB-C PD charger, while the ESP32-C3 runs WLED and controls addressable LEDs such as WS2812B. Once powered, the ESP32-C3 boots WLED, creates a Wi-Fi interface, and allows full LED control using the WLED app or web interface.

Key Features

1. USB-C Power Delivery input
2. No external power supply required
3. ESP32-C3 running WLED firmware
4. Compact and minimal PCB design
5. Plug-and-play LED controller
6. Ideal for small and portable LED setups

PCB Design

The PCB was designed using EasyEDA, following the schematic shown earlier. After completing the layout, the Gerber files were generated for fabrication. The design keeps trace routing clean and compact to ensure stable PD negotiation and reliable ESP32 operation.

WLED Installation

Connect the XIAO ESP32-C3 to your computer and open the WLED web installer from GitHub.

1. Select ESP32-C3 as the board
2. Choose the correct COM port
3. Install WLED
4. Enter your Wi-Fi SSID and password
5. A detailed WLED installation guide is available here: https://www.instructables.com/WLED-ON-XIAO-ESP32/

WLED Setup

1. Plug a USB-C PD charger (5 V / 3 A) into the board
2. The CH224K negotiates the required voltage
3. The green LED indicates power
4. WLED boots and broadcasts its Wi-Fi hotspot
5. Set GPIO 8 as the data output pin for WS2812B LEDs in WLED settings

Connecting the LED

LEDs can be connected either via wire terminals or by soldering directly to the PCB. The 5V, DATA (OUT), and GND pins are clearly labeled. Ensure correct polarity and secure connections before powering up.

Conclusion

This Plug and Play USB-C PD WLED Driver is a compact and elegant solution for powering addressable LEDs using nothing more than a USB-C charger. It removes the need for bulky adapters while providing full WLED functionality, making it ideal for portable lighting, desk setups, and compact decorative projects.

Credit & Acknowledgement

This project is shared for educational and community reference purposes.

Complete Design & Engineering Credit: Gokul

Community Shared By: Bholu

This article is shared to respectfully acknowledge and highlight the original creator’s work within the PCBWay community, encouraging learning, experimentation, and collaboration.