Automatic lighting system with Arduino

How to create a automatic lighting system with Arduino

Contents:-

1. Arduino Uno
2.LCD display 16*2
3. PIR motion sensor
4. 5V Relay
5. lithium ion battrery or any battery whuch give 5v
6.In place of battery you can also use 12v adapter,which i had used in this project 
    

Connections:-

1. See from the code

Working Mechanism:-

Fit this box on the wall at height of 6 ft approx 

when someone enters the door PIR value becomes HIGH and the condition becomes true which signals the arduino to turn the relay to LOW which makes the light on.

Code to upload:-

const int ledPin = 13;

int RELAY = 8;

int PIR=9; // output of pir sensor

#include <LiquidCrystal.h> // includes the LiquidCrystal Library 

LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7) 

void setup() {

Serial.begin(9600);

pinMode(RELAY, OUTPUT);

pinMode(PIR, INPUT);// setting pir output as arduino input

pinMode(ledPin, OUTPUT);

lcd.begin(16,2); // Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display } 

}

void loop() {

int PIRstatus = digitalRead(PIR);

Serial.println("PIRstatus =");

Serial.println(PIRstatus);

if (PIRstatus== HIGH) {

digitalWrite(ledPin, HIGH);

digitalWrite(RELAY, LOW);

Serial.println("Motion dectated,LIGHT is ON");

lcd.print("Motion Detected"); // Prints "Arduino" on the LCD 

lcd.setCursor(0,1);

lcd.print("Light is ON");

delay(900);

 lcd.clear();

}

else {

digitalWrite(ledPin, LOW);

digitalWrite(RELAY,HIGH);

Serial.println("NO one is there!,LIGHT is OFF");

lcd.print("No Motion Detectated"); // Prints "Arduino" on the LCD 

lcd.setCursor(0,1);

lcd.print("ated Lights OFF");

delay(900);

 lcd.clear();

  

}

}

See the vedio:-