#SC_04_buzzer.py
from machine import Pin
import time
 
buzzer=Pin(17,Pin.OUT)

'''
while True:
    buzzer.value(1)
    time.sleep(3)
    buzzer.value(0)
    time.sleep(3)
'''

for i in range(1,20,1):
    buzzer.value(1)
    print("on")
    time.sleep(3)
    buzzer.value(0)
    print("off")
    time.sleep(3)
    print("*" *20)