DIY Arduino Corsair Lighting Node Pro

Overview

The Corsair Lighting Protocol is an open-source community project. It lets you flash an Arduino to emulate a Corsair Lighting Node Pro. SignalRGB then detects and controls it like a real Corsair controller.

This is a popular DIY approach for custom ARGB builds. It gives you flexible channel control without purchasing proprietary hardware.

Required Hardware

Item	Notes
Arduino ATmega32U4-based board	Arduino Pro Micro or compatible
Molex connectors (x2)	One for Channel 1, one for Channel 2
5V Molex or SATA power adapter	Powers the LED strips
Internal USB cable	USB header to USB-A
22AWG wire	For wiring connections
Heat shrink tubing	For insulating solder joints

Required Tools

Wire stripper
Soldering iron kit
Soldering mat

Optional Power Upgrade

Your Arduino’s onboard power may not be enough for large LED builds. If your total power draw exceeds the Arduino’s supply capacity, add a dedicated power source.

Item	Notes
DC voltage regulator buck converter	DC 5V, 15A output
Molex power splitter cable or SATA power Y-splitter	Splits power from PSU
EPS 12V cable extension	For routing power inside the case

Firmware Setup

Download and install the Corsair Lighting Protocol firmware from the GitHub repository: https://github.com/Legion2/CorsairLightingProtocol
Follow the firmware flashing instructions in the repository’s README.
Connect the flashed Arduino to a USB header on your motherboard using an internal USB cable.
Open SignalRGB. It should detect the device as a Corsair Lighting Node Pro.

Adding Components in SignalRGB

Once SignalRGB detects your Arduino as a Lighting Node Pro, you can configure your connected LED strips and fans. Add them as components using the device configuration workflow.

See Configure RGB Controllers for step-by-step instructions.