doorbell-esp32-micropython/main.py

from machine import Pin, PWM
from time import sleep
import dht
from mq135 import MQ135
from dfplayer import Player
import urequests

led_pin = Pin(2, Pin.OUT)    # create output pin on GPIO0
temp_pin = dht.DHT11(Pin(14))
door_relais_pin = Pin(25, Pin.OUT) # Relais 2
bell_relais_pin = Pin(26, Pin.OUT) # Relais 1
pir_pin = Pin(39, Pin.IN)
gas_pin = MQ135(Pin(36)) # analog PIN
bell = Player(17, 16)
button_pin = Pin(27, Pin.IN, Pin.PULL_UP) # Doorbell button: GPIO27 -> GND
servo_pin = Pin(4)
servo = PWM(servo_pin,freq=50) # duty for servo is between 40 - 115

bell.volume(15)

#server_address = "https://haeusle.svhub.de"
server_address = "https://haeusle.hinz.casa"

servo_off = 50
servo_on = 100
servo.duty(servo_off)

#try:
#    temp_pin.measure()
#    temperature = temp_pin.temperature()
#    humidity = temp_pin.humidity()
#except:
#    print("Error: DHT11 not working")

def doorbell_event():
    
    led_pin.on()
    
    # -> DFPlayer play mp3
    #bell.volume(3)
    bell.play_from_folder(01, 03)
    
    # -> Send signal to server
    try:
        response = urequests.get(server_address + "/event?event=doorbell_button")
        response.close()
    except:
        print("Error: Sending doorbell signal to server failed")
    
    # -> Servo to push button
    servo.duty(servo_on)
    sleep(1)
    servo.duty(servo_off)
    
    # Relais
    #door_relais_pin.on()
    #bell_relais_pin.on()
    
    
def pir_event():
    pass
    
    
def send_sendor_data():
    
    try:
        temp_pin.measure()
        temperature = temp_pin.temperature()
        humidity = temp_pin.humidity()
        print("Temperature: " + str(temp_pin.temperature()) + " Celsius")
        print("Humidity: " + str(temp_pin.humidity()) + "%")
        rzero = gas_pin.get_rzero()
        corrected_rzero = gas_pin.get_corrected_rzero(temperature, humidity)
        resistance = gas_pin.get_resistance()
        ppm = gas_pin.get_ppm()
        corrected_ppm = gas_pin.get_corrected_ppm(temperature, humidity)
        print("DHT11 Temperature: " + str(temperature) +"\t Humidity: "+ str(humidity))
        print("MQ135 RZero: " + str(rzero) +"\t Corrected RZero: "+ str(corrected_rzero)+
              "\t Resistance: "+ str(resistance) +"\t PPM: "+str(ppm)+
              "\t Corrected PPM: "+str(corrected_ppm)+"ppm")

    except:
        #pass
        print("Error: send_sendor_data()")
        
def off_signals():
    door_relais_pin.off()
    bell_relais_pin.off()
    led_pin.off()
    servo.duty(servo_off)
    
while True:
    if pir_pin.value() > 0: #pir signal on
        pir_event()
    elif button_pin.value() == 0: #button pressed
        doorbell_event()
    else:
        off_signals()