OpenRGB Custom Rainbow Driver

A lightweight C++ driver for OpenRGB that creates a smooth, software-controlled rainbow effect. Designed for devices that lack built-in hardware rainbow modes on linux, such as the RGB keyboard of a laptop.

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Features

• Low Resource Usage
  Although python would have been easier and better for my sanity, this uses efficient C++ and subsequently has far lower CPU usage.

• Smart Scripts
  Automatically manages the local OpenRGB server (starts it if not already active).

• Toggle Control
  Simple rbow on and rbow off commands.

• Clean Exit
  Sets lights to static white when stopped, although this is quite simple to customize.

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Prerequisites

• Linux (in this case, I am using Lubuntu 24.04)
• OpenRGB (installed and configured)
• libopenrgb (development library)
• cmake and g++

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Installation

1. Clone the repository

git clone https://github.com/varun0693/OpenRGB-rainbow-keyboard-implementation.git
cd OpenRGB-rainbow-keyboard-implementation

2. Build the C++ driver

mkdir build
cd build
cmake ..
make

3. Set up the shortcut

1. Open the file ../shortcut-setup/bashrc_snippet.txt

2. Copy its contents

3. Paste it into your ~/.bashrc

4. Important: Edit REPO_PATH to match where you cloned this repository

5. Reload your shell configuration:

   source ~/.bashrc

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Usage

Turn On

rbow on

Turn Off (sets lighting to white)

rbow off

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