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 ...

So if you want to modify it to add more fans, change the message on the LCD, or use a different temperature sensor, ... an Arduino Uno, a 16x2 LCD, and a push button.

The LM35 temperature sensor and red led are powered with 5V from the Arduino board. How does the circuit works? As you can see in the sketch on the first line I included the LiquidCrystal library ...

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 ...