The master source code is available here -> https://github.com/vanvught/rpidmx512
A development board is available here -> https://github.com/vanvught/GD32FxxxR-dev-board
Full documentation will be available here -> https://www.gd32-dmx.org
The ready to use firmware is build to use with the bootloader TFTP server -> https://github.com/vanvught/GD32F107RC-Bootloader-TFTP
There is a 1x DMX/RDM board from BitWizard -> https://www.bitwizard.nl/shop/dmx/DMX-interface-for-Raspberry-pi
There is an opensource hardware board available here -> https://github.com/vanvught/h3dmx512-zip/tree/master/eagle/Orange-Pi-Zero/Pixel/P5
There is a 1x DMX/RDM board from BitWizard -> https://www.bitwizard.nl/shop/dmx/DMX-interface-for-Raspberry-pi
There is an opensource hardware board available here -> https://github.com/vanvught/h3dmx512-zip/tree/master/eagle/Orange-Pi-Zero/Pixel/P5
There is a 1x DMX/RDM board from BitWizard -> https://www.bitwizard.nl/shop/dmx/DMX-interface-for-Raspberry-pi
There is an opensource hardware board available here -> https://github.com/vanvught/h3dmx512-zip/tree/master/eagle/Orange-Pi-Zero/Pixel/P5