Control led light using remote

 // Include IR Remote Library by Ken Shirriff

#include <IRremote.h>

// Define sensor pin

const int RECV_PIN = 4;

// Define LED pin

#define RED    8

#define GREEN  9

#define YELLOW 10

#define BLUE   11

// Define integer to remember toggle state

int redState = 0;

int greenState = 0;

int yellowState = 0;

int blueState = 0;

// Define IR Receiver and Results Objects

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup() {

  // Enable the IR Receiver

  irrecv.enableIRIn();

  // Set LED pins as Outputs

  pinMode(RED, OUTPUT);

  pinMode(GREEN, OUTPUT);

  pinMode(YELLOW, OUTPUT);

  pinMode(BLUE, OUTPUT);

}

void loop() {

  if (irrecv.decode(&results)) {

    switch (results.value) {

      case  0x6785E38A:

        if (redState == 0) {

          digitalWrite(RED, HIGH);

          redState = 1;

        }

        else {

          digitalWrite(RED, LOW);

          redState = 0;

        }

        break;

      case  0x823E3FB6:

        if (greenState == 0) {

          digitalWrite(GREEN, HIGH);

          greenState = 1;

        }

        else {

          digitalWrite(GREEN, LOW);

          greenState = 0;

        }

        break;

      case  0xBDF598EE:

        if (yellowState == 0) {

          digitalWrite(YELLOW, HIGH);

          yellowState = 1;

        }

        else {

          digitalWrite(YELLOW, LOW);

          yellowState = 0;

        }

        break;

      case  0x783D9008:

        if (blueState == 0) {

          digitalWrite(BLUE, HIGH);

          blueState = 1;

        }

        else {

          digitalWrite(BLUE, LOW);

          blueState = 0;

        }

        break;

    }

    irrecv.resume();

  }

}

esp8266 telegram

 #include <ESP8266WiFi.h>

#include <WiFiClientSecure.h>

#include <UniversalTelegramBot.h>

#include <ArduinoJson.h>

// Replace with your network credentials

const char* ssid = "rkk";

const char* password = "rkk@1234";

// Initialize Telegram BOT

#define BOTtoken "5527844175:AAEh2wPs0BtABXxfJSTjN_1wC-rr1JFu_oo"  // your Bot Token (Get from Botfather)

// Use @myidbot to find out the chat ID of an individual or a group

// Also note that you need to click "start" on a bot before it can

// message you

#define CHAT_ID "911786722"

X509List cert(TELEGRAM_CERTIFICATE_ROOT);

WiFiClientSecure client;

UniversalTelegramBot bot(BOTtoken, client);

const int motionSensor = 14; // PIR Motion Sensor

bool motionDetected = false;

// Indicates when motion is detected

void ICACHE_RAM_ATTR detectsMovement() {

  //Serial.println("MOTION DETECTED!!!");

  motionDetected = true;

}

void setup() {

  Serial.begin(115200);

  configTime(0, 0, "pool.ntp.org");      // get UTC time via NTP

  client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org

  // PIR Motion Sensor mode INPUT_PULLUP

  pinMode(motionSensor, INPUT_PULLUP);

  // Set motionSensor pin as interrupt, assign interrupt function and set RISING mode

  attachInterrupt(digitalPinToInterrupt(motionSensor), detectsMovement, RISING);

  // Attempt to connect to Wifi network:

  Serial.print("Connecting Wifi: ");

  Serial.println(ssid);

  WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

    Serial.print(".");

    delay(500);

  }

  Serial.println("");

  Serial.println("WiFi connected");

  Serial.print("IP address: ");

  Serial.println(WiFi.localIP());

  bot.sendMessage(CHAT_ID, "Bot started up", "");

}

void loop() {

  if(motionDetected){

    bot.sendMessage(CHAT_ID, "Motion detected!!", "");

    Serial.println("Motion Detected");

    motionDetected = false;

  }

}

LIBRARY FOR ESP 8266 AND ESP32

 http://arduino.esp8266.com/stable/package_esp8266com_index.json

https://dl.espressif.com/dl/package_esp32_index.json

IoT Project ESP8266 with Telegram Messenger with PIR

 #include <Wire.h>

#include <LiquidCrystal_I2C.h>

#include <ESP8266WiFi.h>

#include <WiFiClientSecure.h>

#include <UniversalTelegramBot.h>

LiquidCrystal_I2C lcd (0x27, 16, 2);

const char* ssid = "rkk";

const char* password = "rkk@1234";

#define BOTtoken "5527844175:AAEh2wPs0BtABXxfJSTjN_1wC-rr1JFu_oo"

#define CHAT_ID "Lyallbot"

#define Sensor D0

#define LEDR D3

#define LEDG D4

#define Buzzer D5

X509List cert(TELEGRAM_CERTIFICATE_ROOT);

WiFiClientSecure client;

UniversalTelegramBot bot(BOTtoken, client);

void setup() {

  Serial.begin(115200);

  lcd.init();

  lcd.backlight();

  Wire.begin(D2, D1);

  configTime(0, 0, "pool.ntp.org");      // get UTC time via NTP

  client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org

  pinMode(Sensor, INPUT);

  pinMode(LEDR, OUTPUT);

  pinMode(LEDG, OUTPUT);

  pinMode(Buzzer, OUTPUT);

  WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  int a = 0;

  while (WiFi.status() != WL_CONNECTED) {

    Serial.print(".");

    lcd.setCursor(a, 0);

    lcd.print(".");

    delay(500);

    a++;

  }

  Serial.println("");

  lcd.clear();

  lcd.setCursor(0, 0);

  lcd.print("WiFi connected");

  Serial.println("WiFi connected");

  Serial.print("IP address: ");

  lcd.setCursor(0, 1);

  lcd.print(WiFi.localIP());

  Serial.println(WiFi.localIP());

  delay(500);

  bot.sendMessage(CHAT_ID, "System started", "");

  lcd.clear();

  lcd.setCursor(0, 0);

  lcd.print("System started");

  delay(1000);

  lcd.clear();

}

void loop() {

  bool value = digitalRead(Sensor);

  Serial.println(value);

  if (value == 1) {

    Serial.println("Motion Detected");

    digitalWrite(LEDR, HIGH);

    digitalWrite(Buzzer, HIGH);

    digitalWrite(LEDG, LOW);

    lcd.setCursor(0, 0);

    lcd.print("Motion Detected");

    bot.sendMessage(CHAT_ID, "Motion detected!!", "");

  } else if (value == 0) {

    digitalWrite(LEDR, LOW);

    digitalWrite(Buzzer, LOW);

    digitalWrite(LEDG, HIGH);

    lcd.setCursor(0, 0);

    lcd.print("No Motion      ");

  }

}

How to install Library of 8266 in Arduino IDE

 

Step 1: Open Arduino IDE

Open ArduinoIDE, 

Open file 

 

Goto- the preferencesand then click Preferences and then paste http://arduino.esp8266.com/stable/package_esp8266com_index.json

in the Additional Boards Manager URLs option, click ok.

go to Tools menu

                                      

got to board - Board Manager

                               

EXP 5. Control and monitor the temperature of the elements using temperature sensor with NODEMCU

	#include "DHT.h"
	#define DHTPIN 4 // what digital pin the DHT22 is conected to
	#define DHTTYPE DHT22 // there are multiple kinds of DHT sensors
	DHT dht(DHTPIN, DHTTYPE);
	void setup() {
	Serial.begin(9600);
	Serial.setTimeout(2000);
	// Wait for serial to initialize.
	while(!Serial) { }
	dht.begin();
	Serial.println("Device Started");
	Serial.println("-------------------------------------");
	Serial.println("Running DHT!");
	Serial.println("-------------------------------------");
	}
	int timeSinceLastRead = 0;
	void loop() {
	// Report every 2 seconds.
	if(timeSinceLastRead > 2000) {
	// Reading temperature or humidity takes about 250 milliseconds!
	// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
	float h = dht.readHumidity();
	// Read temperature as Celsius (the default)
	float t = dht.readTemperature();
	// Read temperature as Fahrenheit (isFahrenheit = true)
	float f = dht.readTemperature(true);
	// Check if any reads failed and exit early (to try again).
	if (isnan(h) || isnan(t) || isnan(f)) {
	Serial.println("Failed to read from DHT sensor!");
	timeSinceLastRead = 0;
	return;
	}
	// Compute heat index in Fahrenheit (the default)
	float hif = dht.computeHeatIndex(f, h);
	// Compute heat index in Celsius (isFahreheit = false)
	float hic = dht.computeHeatIndex(t, h, false);
	Serial.print("Humidity: ");
	Serial.print(h);
	Serial.print(" %\t");
	Serial.print("Temperature: ");
	Serial.print(t);
	Serial.print(" *C ");
	Serial.print(f);
	Serial.print(" *F\t");
	Serial.print("Heat index: ");
	Serial.print(hic);
	Serial.print(" *C ");
	Serial.print(hif);
	Serial.println(" *F");
	timeSinceLastRead = 0;
	}
	delay(100);
	timeSinceLastRead += 100;
	}