It was the fourth part of the audition and saw yet another entry winning the coveted Golden Buzzer, this time from the host, Terry Crews. The buzzer, like some of the previous seasons, was ...

This is an Arduino-based distance detection system using an HC-SR04 ultrasonic sensor. When an object comes within 100 cm, the system activates a buzzer with random tones and lights up an LED.

This was developed and tested with an original Amiga 500 keyboard and an Arduino Leonardo board. Other combinations are not tested, other boards based on the ATmega32U4 microcontroller should work ...