This isn’t about connecting a temperature sensor in your Arduino. ... The week point for accuracy is that the UNO has the analog ref tied to Vcc but you can switch analog ref to the internal 1 ...

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 ...

To build this project, all you need is three main components: an Arduino Uno, a 16x2 LCD, and a push button. You can connect everything to a breadboard to keep it simple.