An alarm clock using Arduino with I2C protocol.
For the template code to work:
Download libraries for the Liquid Crystal Display and Wire (zip file) in this link: https://www.instructables.com/id/How-to-Connect-I2C-Lcd-Display-to-Arduino-Uno/
Download the Real Time Clock library (zip file) in this link: http://www.rinkydinkelectronics.com/library.php?id=73