Objective: Ganpati decoration using ardiouno and relay driver circuit.

Step: Material required

1)Arduino

2)Ultrasonic sensor

3)Motion sensor

4)Power supply

5)Socket

Step:2 Power supply material.

1)  Transformer(230v AC TO12vAC)-01

2)  Diode(IN4007)-04

3)  Capacitor(1000microfarad)-01

4)  Ceramic capacitor(104)-01

5)   Voltage regulater(7812/7805)-1each.

Stap:3 how to make power supply.

First take a diode and make a diode bridge then take a transformer join + ve to diode –ve and –ve to +ve  then take a capacitor and the capacitor to diode +ve –ve then take a ceramic capacitor and join the capacitor to any way because ceramic capacitor not any +ve  -ve then take a 7805 regulator and join + to regulator and –ve to ground our power supply is complete.

 If you want a 5 volt power supply, just simply replace the LM7812 to a LM7805 regulator.

Stap:4)How to pin motion sensor to ardiouno.

Power the PIR with 5V and connect ground to ground.

 Then connect the output to a digital pin. In this example we'll use pin 2.

Stap:5) How to pin ultrasonic sensor to ardiouno.

intvcc = 2; //attach pin 2 to vcc
int trig = 3; // attach pin 3 to Trig
int echo = 4; //attach pin 4 to Echo
intgnd = 5; //attach pin 5 to GND

step:6)Arduino  programming.

/*

HC-SR04 Ping distance sensor:

VCC to arduino 5v

GND to arduino GND

Echo to Arduino pin 9

Trig to Arduino pin 8*/

#define echopin 9 // echo pin

#define trigpin 8 // Trigger pin

int maximumRange = 50;

long duration, distance;

int calibrationTime = 15;       

//the time when the sensor outputs a low impulse

long unsigned int lowIn;        

//the amount of milliseconds the sensor has to be low

//before we assume all motion has stopped

long unsigned int pause = 5000; 

boolean lockLow = true;

boolean takeLowTime; 

int pirPin = 2;    //the digital pin connected to the PIR sensor's output

int ledPin = 13;

void setup() {

Serial.begin (9600);

  pinMode (trigpin, OUTPUT);

  pinMode (echopin, INPUT );

  pinMode (4, OUTPUT);

  pinMode (3, OUTPUT);

  pinMode (13,OUTPUT);

   pinMode (12, OUTPUT);

  pinMode (11,OUTPUT);

  pinMode(pirPin, INPUT);

  pinMode(ledPin, OUTPUT);

  digitalWrite(pirPin, LOW);

  digitalWrite(3,HIGH);

  digitalWrite(12,HIGH);

  digitalWrite(11,LOW);

  Serial.print("calibrating sensor ");

    for(int i = 0; i < calibrationTime; i++){

      Serial.print(".");

      delay(1000);

      }

    Serial.println(" done");

    Serial.println("SENSOR ACTIVE");

    delay(50);

  //give the sensor some time to calibrate

 

}

void loop ()

{

 

  digitalWrite(trigpin,LOW);

  delayMicroseconds(2);

  digitalWrite(trigpin,HIGH);

  delayMicroseconds(10);

  duration=pulseIn (echopin,HIGH);

  distance= duration/58.2;

  Serial.println(distance);

  delay (50);

  if(digitalRead(pirPin) == HIGH){

       digitalWrite(ledPin, HIGH);   //the led visualizes the sensors output pin state

       delay(5000);

       if(lockLow){ 

         //makes sure we wait for a transition to LOW before any further output is made:

         lockLow = false;           

         Serial.println("---");

         Serial.print("motion detected at ");

         Serial.print(millis()/1000);

         Serial.println(" sec");

         delay(1000);

         }        

         takeLowTime = true;

       }

     if(digitalRead(pirPin) == LOW){      

       digitalWrite(ledPin, LOW);  //the led visualizes the sensors output pin state

       if(takeLowTime){

        lowIn = millis();          //save the time of the transition from high to LOW

        takeLowTime = false;       //make sure this is only done at the start of a LOW phase

        }

       //if the sensor is low for more than the given pause,

       //we assume that no more motion is going to happen

       if(!lockLow && millis() - lowIn > pause){ 

           //makes sure this block of code is only executed again after

           //a new motion sequence has been detected

           lockLow = true;                       

           Serial.print("motion ended at ");      //output

           Serial.print((millis() - pause)/1000);

           Serial.println(" sec");

           delay(1000);

           }

       }

if (distance <200)

{

digitalWrite (4,HIGH);

delay(100);

digitalWrite (4,LOW);

delay(100);

}

else if ( 200< distance <600)

{

  digitalWrite (4,HIGH);

  delay(100);

  digitalWrite (4,LOW);

  delay(100);

}

else

{

  digitalWrite (4,HIGH);

  delay(3000);

  digitalWrite (4,LOW);

  delay(3000);

}

}