Add submission # 4968

#4968

Author: ArduinoBot

registry.txt

@@ -7352,3 +7352,4 @@ https://github.com/ams-OSRAM-Group/OSP_aocmd.git|Contributed|OSP CommandInterpre
 https://github.com/Danzo-Systems/FM25060_Library.git|Contributed|FM25060
 https://github.com/DouglasFlores-fun/SimpleLogger.git|Contributed|SimpleLogger
 https://github.com/KobaProduction/AvrFHT.git|Contributed|AVR FHT Library
+https://github.com/thirstyice/TinyDMXSerial.git|Contributed|TinyDMXSerial