A simple Sketch to read the Temperature from multiple DS18B20 and publish them to a MQTT-Server. Compiles in the Arduino IDE for the ESP8266
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README.md

mqtt_esp8266_ds1820_arduino

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A simple Sketch to read the Temperature from multiple DS18B20 and publish them to a MQTT-Server using a ESP8266. Compiles in the Arduino IDE for the ESP8266

This Sketch will connect your ESP8266 to your WIFI-AP and to a MQTT-Server. It'll loop through all DS18B20 temperature sensors connected to GPIO2 and publish their Temperature values to the MQTT-Server.

  • The topic is put together from a base you define in String romcode = "temp/"; plus the ROM-ID of the DS18B20.
  • The Message contains the raw integer Value of the Temperature ( divide by 16 for Celsius)

Based on: