from machine import Pin, PWM
from UtilityClasses import UltrasonicSensor, DHTSensor, WiFiManager, PhotoresistorSensor
import time
from dht import DHT22

ssid = "Wokwi-GUEST"
password = ""

pir = Pin(0, Pin.IN)
relay = Pin(21, Pin.OUT)

# wifi_manager = WiFiManager(ssid, password)
# wifi_manager.connect()

api_key = "L6ARS8A7MRKEL8X4"

ultrasonicSensor = UltrasonicSensor(20, 19, 18)
dhtSensor = DHTSensor(api_key)

photoresistorSensor = PhotoresistorSensor(27, 18)

try:
    while True:
        ldrVal = photoresistorSensor.calculate_lux()
        photoresistorSensor.glow_light(ldrVal)

        distance = ultrasonicSensor.measure_distance()

        if pir.value() and distance < 200:
            print("Motion Detected!")
            print("Distance:", distance, "cm")
            brightness = (ldrVal / 65535.0) * 1023
            brightness = int(brightness)
            brightness = min(brightness, 1023)
            photoresistorSensor.glow_light(brightness)

        temp, hum = dhtSensor.temperature_and_humidity()
        # dhtSensor.send_data(temp, hum)

        if temp > 25:
            relay.value(0)
            print("On AC")
        else:
            relay.value(1)
            print("off AC")

        time.sleep(0.001)
except KeyboardInterrupt:
    pass


main.py

diagram.json

from machine import Pin, PWM, ADC
from dht import DHT22
import time
import urequests
import network


class UltrasonicSensor:
  def __init__(self, trig_pin_number, echo_pin_number, led_pin_number):
    self.trig_pin = Pin(trig_pin_number, Pin.OUT)
    self.echo_pin = Pin(echo_pin_number, Pin.IN)
    self.led_pwm = PWM(Pin(led_pin_number, Pin.OUT))
    self.led_pwm.freq(1000)

  def measure_distance(self):
    self.trig_pin.value(1)
    time.sleep_us(10)
    self.trig_pin.value(0)

    while self.echo_pin.value() == 0:
        pass
    start_time = time.ticks_us()

    while self.echo_pin.value() == 1:
        pass
    end_time = time.ticks_us()

    duration = time.ticks_diff(end_time, start_time)

    distance = (duration * 34300) / (2 * 1000000)
    return distance

  def adjust_brightness(self, distance):
    if distance < 200:
        brightness = int(1023 - ((distance / 200) * 1023))
        brightness = max(0, min(brightness, 1023))
        self.led_pwm.duty_u16(brightness)
    else:
        self.led_pwm.duty_u16(0)

  def off_light(self):
    self.led_pwm.duty_u16(0)



class DHTSensor:
  def __init__(self, api_key):
    self.api_key = api_key
    self.dht = DHT22(Pin(15))

  def temperature_and_humidity(self):
    self.dht.measure()
    temp = self.dht.temperature()
    hum = self.dht.humidity()

    print(f"Temperature: {temp}°C   Humidity: {hum}% ")
    return temp, hum

  def send_data(self, temp, hum):
    url = f"https://api.thingspeak.com/update?api_key={self.api_key}&field1={temp}&field2={hum}"
    response = urequests.post(url)
    response.close()



class PhotoresistorSensor:
    def __init__(self, ldr_pin, led_pin_number):
        self.ldr_pin = ADC(Pin(ldr_pin))
        self.led_pwm = PWM(Pin(led_pin_number, Pin.OUT))
        self.led_pwm.freq(1000)

    def calculate_lux(self):
        ldrVal = self.ldr_pin.read_u16()
        print(f"{ldrVal}")
        return ldrVal

    def glow_light(self, ldrVal):
      brightness_threshold = 50000
      if ldrVal > brightness_threshold:
        self.led_pwm.duty_u16(0)
      else:
        brightness = (ldrVal / 65535.0) * 1023
        brightness = int(brightness)
        brightness = min(brightness, 1023)
        self.led_pwm.duty_u16(brightness)

    def off_light(self):
      self.led_pwm.duty_u16(0)

    

class WiFiManager:
    def __init__(self, ssid, password):
        self.ssid = ssid
        self.password = password
        self.wifi = network.WLAN(network.STA_IF)

    def connect(self):
        if not self.wifi.isconnected():
            print('Connecting to WiFi...')
            self.wifi.active(True)
            self.wifi.connect(self.ssid, self.password)
            while not self.wifi.isconnected():
                pass
        print("Connected to WiFi!")

