README.md

diagram.json

// Smart Home Controlling System
// Thingspeak Server dB Public View: https://thingspeak.com/channels/2405104

#include <WiFi.h>
#include "DHTesp.h"
#include "ThingSpeak.h"

// Wifi
const char *WIFI_NAME = "Wokwi-GUEST";
const char *WIFI_PASSWORD = "";
WiFiClient client;

// Thingspeak
unsigned long weatherStationChannelNumber = 2405104;
unsigned long myChannelNumber = 2405104;
const char *myWriteAPIKey = "3SGUAWSLXUEL6CIP";

// Pins
const int dhtPin = 15;

const int chHeaterPin = 22;
const int chKitchenPin = 21;
const int chGardenPin = 19;
const int chLivingroomPin = 18;
;
const int pirKitchenPin = 13;
const int pirGardenPin = 12;
const int pirLivingroomPin = 14;

DHTesp dhtSensor;

// Timer variables
unsigned long lastTime = 0;
unsigned long timerDelay = 10000;

int statusCode = 0;
int field[8] = {1, 2, 3, 4};

int chHeater = 0;
int chKitchen = 0;
int chGarden = 0;
int chLivingroom = 0;

float prevTemp = 0;

void setup()
{
  Serial.begin(115200); // Initialize serial
  dhtSensor.setup(dhtPin, DHTesp::DHT22);

  pinMode(chHeaterPin, OUTPUT);
  pinMode(chKitchenPin, OUTPUT);
  pinMode(chGardenPin, OUTPUT);
  pinMode(chLivingroomPin, OUTPUT);
  pinMode(pirKitchenPin, INPUT);
  pinMode(pirGardenPin, INPUT);
  pinMode(pirLivingroomPin, INPUT);

  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  Serial.println("Welcome at Smart Suite");
}

void loop()
{
  // use ThingSpeak.readMultipleFields(channelNumber, readAPIKey) for private channels
  statusCode = ThingSpeak.readMultipleFields(weatherStationChannelNumber);
  if (statusCode == 200)
  {
    // Fetch the stored data
    chHeater = ThingSpeak.getFieldAsInt(field[2]);     // Field 3
    chKitchen = ThingSpeak.getFieldAsInt(field[3]);    // Field 4
    chGarden = ThingSpeak.getFieldAsInt(field[4]);     // Field 5
    chLivingroom = ThingSpeak.getFieldAsInt(field[5]); // Field 6
  }
  else
  {
    Serial.println("Problem reading channel. HTTP error code " + String(statusCode));
  }

  TempAndHumidity dhtData = dhtSensor.getTempAndHumidity();
  float temperature = dhtData.temperature;
  float humidity = dhtData.humidity;

  if (temperature < 20)
    chHeater = 1;
  else
    chHeater = 0;

  if (digitalRead(pirKitchenPin) == HIGH)
    chKitchen = 1;
  else
    chKitchen = 0;

  if (digitalRead(pirGardenPin) == HIGH)
    chGarden = 1;
  else
    chGarden = 0;

  if (digitalRead(pirLivingroomPin) == HIGH)
    chLivingroom = 1;
  else
    chLivingroom = 0;

  if (chHeater >= 1)
    digitalWrite(chHeaterPin, HIGH);
  if (chHeater == 0)
    digitalWrite(chHeaterPin, LOW);

  if (chKitchen >= 1)
    digitalWrite(chKitchenPin, HIGH);
  if (chKitchen == 0)
    digitalWrite(chKitchenPin, LOW);

  if (chGarden >= 1)
    digitalWrite(chGardenPin, HIGH);
  if (chGarden == 0)
    digitalWrite(chGardenPin, LOW);

  if (chLivingroom >= 1)
    digitalWrite(chLivingroomPin, HIGH);
  if (chLivingroom == 0)
    digitalWrite(chLivingroomPin, LOW);

  Serial.println("Temperature: " + String(temperature));
  Serial.println("Humidity: " + String(humidity));
  Serial.println("Heater: " + String(chHeater));
  Serial.println("Kitchen: " + String(chKitchen));
  Serial.println("Garden: " + String(chGarden));
  Serial.println("Livingroom: " + String(chLivingroom));

  ThingSpeak.setField(1, temperature);
  ThingSpeak.setField(2, humidity);
  ThingSpeak.setField(3, chHeater);
  ThingSpeak.setField(4, chKitchen);
  ThingSpeak.setField(5, chGarden);
  ThingSpeak.setField(6, chLivingroom);

  // Write to ThingSpeak.
  int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

  if (x == 200)
  {
    Serial.println("Data pushed successfull");
  }
  else
  {
    Serial.println("Push error" + String(x));
  }
  Serial.println("====================");

  delay(10000);
}


smart-suite.ino

# Wokwi Library List
# See https://docs.wokwi.com/guides/libraries

WiFi
ThingSpeak
DHT sensor library for ESPx
