from machine import ADC, Pin
from time import sleep
adc = ADC(4)
ledR = Pin(2, Pin.OUT)
ledA = Pin(16, Pin.OUT)
ledB = Pin(17, Pin.OUT)
while True:
valor = adc.read()
print(valor)
if valor > 100 and valor < 1000:
ledR.on()
ledA.off()
ledB.off()
elif valor >= 1000 and valor < 3000:
ledA.on()
ledR.on()
ledB.off()
elif valor >= 3000:
ledA.on()
ledR.on()
ledB.on()
elif valor <= 100:
ledR.off()
ledA.off()
ledB.off()
sleep(0.5)