Add submission # 7468

#7468

Author: ArduinoBot

registry.txt

@@ -8762,3 +8762,4 @@ https://github.com/Bodobolero/PostgrestClient.git|Contributed|PostgrestClient
 https://github.com/ronibandini/DFR1173-Voice-Prompter.git|Contributed|DFR1173
 https://github.com/marinpopa/AsyncWiFiManagerSimple.git|Contributed|AsyncWiFiManagerSimple
 https://github.com/kennedy-kitoko/TerraSoil.git|Contributed|TerraSoil
+https://github.com/NitrofMtl/STM32RS485DMA.git|Contributed|STM32RS485DMA