from machine import Pin
import time

# Set up the digital pin (change 15 to your actual GPIO)
mq2_pin = Pin(15, Pin.IN)

print("MQ2 Gas Sensor Test")

while True:
    gas_detected = mq2_pin.value() == 0  # LOW means gas detected (depends on sensor)
    
    if gas_detected:
        print("⚠️ Gas Detected!")
    else:
        print("✅ Air is clean")
    
    time.sleep(1)