The ray module is a 3-channel LED controller, designed to be small, and built on the OHAUT framework.
OHAUT framework provides the common web interface, WiFi management, connectivity to other smart devices (like Alexa , homeassistant, etc..), as well as an update system which allows firmware to be published on this repository (see the gh-pages branch ), long term it probably makes more sense to release via github releases of binaries.
The firmware code for this device is available in the firmware directory.
The hardware design for this devices is available in the hardware directory.