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SignalRGB & OpenRGB

The URX Core75 fully supports third-party RGB control software, allowing you to sync your keyboard lighting with other RGB peripherals across your entire setup. Choose either SignalRGB for a polished, all-in-one experience or OpenRGB for a lightweight, open-source approach.

SignalRGB is a unified RGB control platform that lets you sync lighting effects across devices from different brands. Instead of juggling multiple vendor apps, SignalRGB gives you one interface to control everything — keyboards, mice, fans, RAM, and more — with perfectly synchronized animations.

The URX Core75 is supported in SignalRGB via a plugin, enabling full per-key control so you can apply any of its extensive library of community-created effects or design your own custom layouts.

Setup Steps

Video Tutorial — Coming Soon

  1. Download & Install SignalRGB

    • Visit signalrgb.com and download the installer for your operating system.
    • Run the installer and follow the on-screen instructions. SignalRGB is available for Windows only.

  2. Install the URX Core75 Plugin

    • Download the URX Core75 SignalRGB plugin from the Software & Firmware Downloads page.
    • Place the plugin file into the standard SignalRGB plugins directory: 
      %userprofile%\Documents\WhirlwindFX\Plugins
    • If the Plugins folder does not exist, create it manually.

  3. Connect Your Keyboard

    • Connect your Core75 to your computer using the USB-C cable and set the back connection switch to OFF (Wired mode).
    • SignalRGB requires a wired USB connection to detect and control the keyboard.

  4. Launch SignalRGB and Detect

    • Open SignalRGB from the Start menu.
    • The application will automatically scan for compatible devices. Your Core75 should appear in the device layout.

OpenRGB is a free, open-source application for controlling RGB lighting across devices without bloated vendor software. It is lightweight, cross-platform, and community-driven — supporting Windows, macOS, and Linux.

To use OpenRGB with the URX Core75, you will use ColorHoster — an OpenRGB-compatible SDK server that bridges OpenRGB to the keyboard's VIA per-key RGB protocol.

Setup Steps

Warning

Only download OpenRGB Version 0.9 (Stable). Do not download OpenRGB 1.0 or any experimental builds, as some plugins might not work correctly.

Video Tutorial — Coming Soon

  1. Download & Install ColorHoster

    • Download the latest ColorHoster release for your platform from the ColorHoster releases page.
    • Extract the binary to a folder of your choice.

  2. Get the VIA JSON File

    • Download the URX_Core75_VIA.json layout definition file from the Software & Firmware Downloads page.
    • Place it in the same folder as the ColorHoster binary, or note its path.

  3. Connect Your Keyboard

    • Connect your Core75 to your computer using the USB-C cable and set the back connection switch to OFF (Wired mode).
    • A wired USB connection is required.

  4. Launch ColorHoster

    • Open a terminal / command prompt in that directory and run: 
      ColorHoster --brightness --json ./URX_Core75_VIA.json
    • Replace the JSON path if you stored it elsewhere.
    • ColorHoster will start an OpenRGB SDK server on 127.0.0.1:6742 by default.

  5. Connect OpenRGB to ColorHoster

    • Open OpenRGB. Go to the SDK Server tab in the settings.
    • Click Add Client, set the address to 127.0.0.1 and port to 6742.
    • OpenRGB will detect the Core75's full 82-LED RGB matrix, available lighting modes, and real-time per-key control.

  6. Apply Lighting

    • Select your Core75 from OpenRGB's device list.
    • Select the Direct mode.

Tip

  • ColorHoster can be installed as a background service with ColorHoster --service create so it starts automatically with your system.
  • OpenRGB plugins are available at openrgb.org/plugins.html.

Credit: ColorHoster is created and maintained by Azarattum.