print("Hello, ESP32!")
from machine import Pin 
import time
led1=Pin(21,Pin.OUT)
led2=Pin(22,Pin.OUT)
led3=Pin(23,Pin.OUT)
buz=Pin(18,Pin.OUT)
BTN=Pin(19,Pin.IN)
while True:
    if BTN.value()==1:
        led1.value(1)
        led2.value(0)
        led3.value(0)
        time.sleep(0.5)
        buz.value(1)
        time.sleep(1)
        led1.value(1)
        led2.value(1)
        led3.value(0)
        time.sleep(0.5)
        buz.value(1)
        sleep(1)
        led1.value(1)
        led2.value(1)
        led3.value(1)
        time.sleep(0.5)
        buz.value(0)
        time.sleep(1)
        led1.value(0)
        led2.value(0)
        led3.value(0)
        buz.value(0)
        sleep(1) 
    else:
        led1.value(0)  
        led2.value(0)  
        led3.value(0)
        buz.value(0)