from machine import Pin, ADC
from utime import sleep, sleep_ms

led1 , led2, led3 = Pin(15, Pin.OUT), Pin(2, Pin.OUT), Pin(4, Pin.OUT)
ldr = ADC(Pin(34))
ldr.width(ADC.WIDTH_10BIT)
ldr.atten(ADC.ATTN_11DB)

while True:

    lectura = ldr.read()
    print("Resol: {}" .format(lectura))
    sleep_ms(150)
    
    if lectura > 700:
        led1.value(1)
    else:
        led1.value(0)