Add submission # 3737

#3737

Author: ArduinoBot

registry.txt

@@ -6577,3 +6577,4 @@ https://github.com/DavidHurtadoBanda/Salesforce-Library.git|Contributed|Salesfor
 https://github.com/m5stack/M5StickCPlus2.git|Contributed|M5StickCPlus2
 https://github.com/he0119/arduino-miio.git|Contributed|SerialMIIO
 https://github.com/cotestatnt/Arduino-MySQL.git|Contributed|MySQL Query Client
+https://github.com/RobTillaart/PCA9549.git|Contributed|PCA9549