Firmware
There are two options for SignalRGB Compatible QMK Firmware: Pre-compiled Firmware & Building Firmware From Source.
Pre-Compiled Firmware:
Pre-Compiled SignalRGB Compatible Firmware is available for select keyboard models. These firmware files can be found here.
Building Firmware From Source:
If your keyboard does not have a pre-compiled SignalRGB compatible firmware file, or you want to make changes to the firmware file, then you will need to build your firmware from source.
Please note that SignalRGB and VIA do not happily run at the same time. You must quit either VIA (or close the browser tab) before running SignalRGB, or close SignalRGB before attempting to use VIA as the raw_hid_recieve solution that both Software(s) use conflict with each other.
Currently QMK keyboards are only supported in Wired mode, Bluetooth and 2.4Ghz Wireless modes are currently unsupported. Bluetooth as it stands may never be supported due to bandwith limitations, 2.4Ghz may be supported in the future depending upon the implementation of the wireless dongle and firmware.