from machine import Pin,ADC
from picozero import Speaker
from time import sleep

gas_sensor = ADC(Pin(26))
buzzer = Speaker(15)

while True:

    gas_value = gas_sensor.read_u16()
    voltage = (gas_value /65535)*3.3
    print("Gas sensor: ",gas_value,"Voltage: ",round(voltage,2),"V")
    
    if gas_value> 40000:
        print("High Gas Concentration Dected")
        buzzer.on()
    else: 
        print("Gas Level Safe ")
        buzzer.off()
        
    sleep(1)