XYMD02-ESP32-Modbus

Read data XY MD02 sensor with ESP32 and RS485

1. ESP32 Devkitc
2. RS485 Modbus Module
3. XY-MD02 Temperature Humidity Transmitter Acquisition Module Transducer SHT20 Temperature & Humidity Sensors
4. ModbusMaster.h
5. AntaresESP32MQTT.h   send data to Antares.id (IoT Platform)

Wiring Diagram

XY-MD02  A  -->  A    RS485
XY-MD02  B  -->  B    RS485
XY-MD02  +  -->  5V  RS485
XY-MD02  -  -->  GND  RS485

ESP32  IO0  -->  RE  RS485
ESP32  IO4  -->  DE  RS485
ESP32  IO16  -->  RO  RS485
ESP32  IO17  -->  DI  RS485
ESP32  5V    -->  VCC  RS485
ESP32  GND  -->  GND  RS485