After the board is powered on, the shaft of the motor is set in a fixed position and it will start the oscillation movement. The user can control the number of beats per minute by adjusting the position of the potentiometer. For a faster pace, the potentiometer must be rotated clockwise, while for a slower pace, the potentiometer must be rotated counterclockwise.
The user can also stop the oscillation of the metronome by turning the potentiometer completely counterclockwise.
Every time the metronome does a complete period, audible and visual signals are transmitted for a short period of time: an LED turns on and a buzzer sounds.
Figure 1. Application Flowchart
