from machine import ADC, Pin
import time

# Connect AD of sensor to GP26
smoke_sensor = ADC(Pin(26))  #GP26 = ADC0

while True:
    analog_value = smoke_sensor.read _u16() #0-65535
    voltage = (analog_value / 65535) * 3.3  #convert to voltage
    print("Analog Value:", analog_value, "Voltage:", voltage)

    if analog_value > 30000:  # adjust threshold based testing 
        print("Smoke detected!")
    else:
        print("Air is clean")

    time.sleep(1)