Add submission # 4346

#4346

Author: ArduinoBot

registry.txt

@@ -6954,3 +6954,4 @@ https://github.com/agomezgar/escornabotLibrary.git|Contributed|escornabot
 https://github.com/AtrivaTECH/AtrivaTECH_PicUNO.git|Contributed|AtrivaTECH PicUNO
 https://github.com/ardlib/bosejis_AMV.git|Contributed|bosejis_AMV
 https://github.com/nayooooo/StreamDeviceAT.git|Contributed|StreamDeviceAT
+https://github.com/board707/DMD_STM32.git|Contributed|DMD_STM32