from machine import Pin, ADC
import utime

Led0 = machine.Pin(25,machine.Pin.OUT)
Led1 = machine.Pin(18,machine.Pin.OUT)
Led2 = machine.Pin(19,machine.Pin.OUT)
Led3 = machine.Pin(20,machine.Pin.OUT)
pot = ADC(Pin(27))

while True:
    Led1.value(1)
    val=pot.read_u16()
    print(val)
    utime.sleep(0.2)
    if val > 55000:
        Led1.value(1)
        Led2.value(1)
        Led3.value(1)
    elif val > 40000:
        Led1.value(1)
        Led2.value(1)
        Led3.value(0)
    elif val > 25000:
        Led1.value(1)
        Led2.value(0)
        Led3.value(0)
    else:
        Led1.value(1)
        Led2.value(0)
        Led3.value(0)