print("Hello, ESP32!")
import time
from machine import Pin
l1= Pin(23, Pin.OUT)
l2= Pin(22, Pin.OUT)
l3= Pin(21, Pin.OUT)
bz= Pin(18, Pin.IN)
btn= Pin(19, Pin.OUT)
while True :
if btn.on():
l1.on()
l2.off()
l3.off()
bz.on()
time.sleep(0.5)
l1.on()
l2.on()
l3.off()
bz.off()
time.sleep(0.5)
l1.on()
l2.on()
l3.on()
bz.on()
else:
l1.off()
l2.off()
l3.off()
bz.off()