Once upon a time, there was a little girl who couldn't wake up for ELEC 220 because she kept on snoozing her alarm. Therefore, we decided to help that girl by building an anti-snoozer alarm. That alarm uses the Ultransonic Ranger and Piezo Buzzer combined with an LED Light Show to create the annoying tune of Do-Re-Mi and a fantastic light show. That little girl is sure to wake up now due to our GROVE-y alarm!!!
Whenever one's hand is between 3 and 20 centimeters above the Ultrasonic Ranger, the Piezo Buzzer goes off and plays Do-Re-Mi until manually switched off.