home Automation with Real time Alarm clock

In this Video I will show you Real Time clock home automation without using any RTC module such as DS3231 or DS1307.

BeginnerFull instructions provided1 hour3,252

home Automation with Real time Alarm clock

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

UTSOURCE Electronic Parts

Adafruit RGB Backlight LCD - 16x2

ControlEverything.com 4-CHANNEL RELAY CONTROLLER FOR I2C

Breadboard (generic)

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

In my previous tutorial, I had shown you how to make NTP RTC clock using Nodemcu. In this video, I will show you how to make esp8266 nodemcu based Alarm home automation using the NTP library.

Components

1.Nodemcu

2.LCD display

3.5v Relay module

4. Jumper wires

Here, I have used two different circuit diagrams for easy understanding. You have to use it in one circuit

You can check the follow the tutorial in video version too

visit my website for more project

Thanks UTSOURCE.net to offer electronic components for my projects

How NTP Works?

NTP can operate in a number of ways. The most common configuration is to operate in client-server mode. The basic working principle is as follows:

The client device such as ESP8266 connects to the server using the User Datagram Protocol (UDP) on port 123.
A client then transmits a request packet to an NTP server.
In response to this request, the NTP server sends a time stamp packet.
A timestamp packet contains multiple information like UNIX timestamp, accuracy, delay, or timezone.
A client can then parse out current date & time values.

Code

Before, You going to upload the code You need to add the NTP library in your Arduino library documentary. If you didn't see my previous article that RTC clock without RTC module click here and download required library

Hope you have liked this post don't forget to share with each other😉

Code

Get the Code

//for more projects visit www.blackkeyhole.com
//modified Ashshak Sharifdeen
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <TimeLib.h>
#include <LiquidCrystal.h>

const int RS = D3, EN = D4, d4 = D5, d5 = D6, d6 = D7, d7 = D8;
LiquidCrystal lcd(RS, EN, d4, d5, d6, d7);

int relay =5;
const int onhour=18;
const int onmin=18;

const int offhour=18;
const int offmin=20;

const long utcOffsetInSeconds = 19800;
 //srilankan time zone
 //+5 hr 30 Mins = 5x60x60 + 3060 = 19800

const char *ssid     = "ZTE WIFI";
const char *password = "kl2229834";

WiFiUDP ntpUDP;

 //srilankan time zone
 //+5 hr 30 Mins = 5x60x60 + 3060 = 19800

NTPClient timeClient(ntpUDP, "asia.pool.ntp.org", utcOffsetInSeconds );





void setup() {

  Serial.begin(115200);
  pinMode(relay,OUTPUT);
  digitalWrite(relay,LOW);
  lcd.begin(16,2);                 // Initialize I2C LCD module (SDA = GPIO21, SCL = GPIO22)
  lcd.setCursor(0, 0);
  lcd.print("Blackkeyhole");
  lcd.setCursor(0, 1);
  lcd.print("www.blackkeyhole.com");

  WiFi.begin(ssid, password);
  Serial.print("Connecting.");

  while ( WiFi.status() != WL_CONNECTED ) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("connected");
  timeClient.begin();
}


void loop() {

  timeClient.update();


//  Serial.print(daysOfTheWeek[timeClient.getDay()]);
  Serial.print(", ");
  Serial.print(timeClient.getHours());
  Serial.print(":");



  Serial.print(timeClient.getMinutes());
  Serial.print(":");
  Serial.println(timeClient.getSeconds());
  //Serial.println(timeClient.getFormattedTime());
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.println("Time:");
  lcd.setCursor(6, 0);
  lcd.print(timeClient.getHours());
  lcd.setCursor(8, 0);
  lcd.println(":");
  lcd.setCursor(9, 0);
  lcd.print(timeClient.getMinutes());
  lcd.setCursor(11, 0);
  lcd.println(":");
  lcd.setCursor(12, 0);
  lcd.print(timeClient.getSeconds());


  if(timeClient.getHours()==onhour && timeClient.getMinutes()==onmin)
  {
    digitalWrite(relay,HIGH);
    Serial.println("Light on");
    lcd.setCursor(0, 1);
    lcd.println("Light on");
  }
  else if(timeClient.getHours()==offhour && timeClient.getMinutes()==offmin)
  {
    digitalWrite(relay,LOW);
    Serial.println("Light off");
    lcd.setCursor(0, 1);
    lcd.println("Light off");
  }

  delay(1000);
}