Add submission # 5975

#5975

Author: ArduinoBot

registry.txt

@@ -7912,3 +7912,4 @@ https://github.com/Elrindel/SomfyReceiver.git|Contributed|SomfyReceiver
 https://github.com/Neurotech-Hub/KepecsWheel.git|Contributed|KepecsWheel
 https://github.com/thebestia90/AD5259.git|Contributed|AD5259
 https://github.com/drmpf/NonBlockingModbusMaster.git|Contributed|NonBlockingModbusMaster
+https://github.com/robinz-labs/digishow-rioc.git|Contributed|DigiShow RIOC