from machine import Pin,ADC
from time import sleep
ldr=ADC(Pin(14))
ldr.width(ADC.WIDTH_10BIT)
ldr.atten(ADC.ATTN_11DB)
led=Pin(5,Pin.OUT)
while True:
    ldr_value=ldr.read()
    print(ldr_value)
    volt=(ldr_value*3.3/4096)
    print("volt=",volt)
    if (volt>=0.01):
      led.value(1)
    else:
      led.value(0)



    sleep(1)