This is an example of connecting multiple ds18b20 sensors to wemos d1 r1 board and sending them through mqtt. The dallas temperature library and the pubsubclient library are required.
Below is a video of the final result! Sorry, it's in Korean!
- Multiple ds18b20 sensors can be used with one digital pin on the ESP8266 board!
- We need to find out the address to identify the sensor!
- "finding-address.ino" is an example of finding an address!
- "multiple-ds18b20-mqtt.ino" is an example of sending multiple sensor values through MQTT!