There are two kinds of buzzer , active buzzer and passive buzzer .
We need to connect GPIO25 to BEEP of J2 .and J2 connect to ULN2003D module .
GPIO25 –> BEEP(J2) –>BEEP(6,ULN2003D) –>BEEP OUT (11,ULN2003D)–>(BEEP OUT)buzzer
main.py
from machine import Pin
import time
beep = Pin(25, Pin.OUT)
if __name__ == '__main__':
i = 0
while True:
i = not i
beep.value(i)
time.sleep_us(250)
