from machine import Pin
from utime import sleep

print("Hello, ESP32!")

led = Pin(2, Pin.OUT)
led2 = Pin(4, Pin.OUI)
PB1 = Pin(25, Pin.IN)

while True:
    if(PB1. value()==1):
        led1.off()
    else(PB1== STOP):
        led2.on()
    
    led.on()
    sleep(0.5)
    led.off()
    sleep(0.5)