from machine import ADC, Pin
import time

# Configuración del sensor
gas = ADC(Pin(34))
gas.atten(ADC.ATTN_11DB)

# Salidas: buzzer y/o LED
buzzer = Pin(14, Pin.OUT)
led = Pin(12, Pin.OUT)

# Valor umbral de gas
umbral = 2000

while True:
    valor = gas.read()
    print("Nivel de gas:", valor)

    if valor > umbral:
        buzzer.value(1)
        led.value(1)
    else:
        buzzer.value(0)
        led.value(0)

    time.sleep(1)