This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure 3 different temperatures. It can be very ...

The controlling chip — an Arduino, in this case — can read the intensity of the selected color. The TCS230 uses a 4 x 4 array of photodiodes, along with a Bayer filter.

It's important to have a grasp of how to read Arduino resistors, as they're useful for controlling the current in an electrical circuit.

This isn’t about connecting a temperature sensor in your Arduino. This build is about using the temperature sensor in your clock.