http://www.bitwizard.nl/shop/dmx/DMX-interface-for-Raspberry-pi https://bitwizard.nl/wiki/Dmx_interface_for_raspberry_pi https://github.com/sandinak/ansible-raspi-dmx/blob/master/playbooks/build/dmx_controllers.yml
https://sites.google.com/site/rpidmx512/orange-pi-dmx512-rdm