Esp8266 + ds18b20

Hello,

How to connect multiple DDS18B20 sensors in ESP8266 and to monitor them with Cayenne ?

Did you download the required library or not ? I think you just need to download the library.

this tutorial https://lastminuteengineers.com/multiple-ds18b20-esp8266-nodemcu-tutorial/ shows how to connect multiple DS18B20 to esp. Once you have successfully got the reading on the esp you send forward the data to cayenne using Cayenne-MQTT-Arduino/ESP8266.ino at master · myDevicesIoT/Cayenne-MQTT-Arduino · GitHub