This isn’t about connecting a temperature sensor in your Arduino. This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno ...

This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure 3 different temperatures ... for example a 8 pin type.

You also need to select the transistor by the type of fan that you use ... to provide power to the fan and transistor. The LM35 temperature sensor and red led are powered with 5V from the Arduino ...

Temperature sensors are used on circuit boards, as part of thermal tests, in industrial controls, and in room controls such as in calibration labs and data centers. Though there are many types of ...