[Edward], creator of the Cave Pearl project ... temperature sensor on the I2C bus — these sensors are cheap and readily available. This isn’t about connecting a temperature sensor in your Arduino.

This video demonstrates how to set up a remote temperature monitoring system using an Arduino Uno R4 WiFi, an LM35 temperature sensor, and the MQTT protocol. The system captures ambient temperature ...

From DIY 3D printers to FPV drones, there's a lot you could do with your Arduino ... another temperature sensor. Likewise, ...