Published November 15, 2019 © GPL3+

MEGR 3171L Fall 2019 PIR Motion Sensing Security System

Wanna spy on your significant other, creep out your roommates, or figure out who's stealing all your beer? This motion detector will help!

BeginnerFull instructions provided10 hours556

MEGR 3171L Fall 2019 PIR Motion Sensing Security System

Things used in this project

Hardware components

Seeed Studio Grove - PIR Motion Sensor

Particle Argon

Breadboard (generic)

Jumper wires (generic)

Seeed Studio Grove – Chainable RGB Led V2.0

Story

Group 21

Background:

We decided to create a PIR activated motion sensor alarm system for our IOT project.

How it works:

The PIR sensor senses heat from individuals in its line of sight. This sensor can sense changes in heat up to 7 meters away, with nearly 180 degrees of viewing angle. When the sensor reads the change in heat nearby (like the motion of some heat source, it changes its signal to the Argon board, which then creates an "event" through the internet, of which the second argon board picks up on. When the second Argon reads the signal, it flashes an LED to alert the user that the PIR sensor has detected movement. After that happens, the second Argon creates an event on the internet that the first Argon board picks up on, causing the first Argon to light up another LED, essentially portraying a confirmation that the second board has received the message, demonstrating successful two-way communication. This 2-way communication can be useful for activating cameras from remote locations, small sirens, or confirmation that other objects that may be deemed useful to deter violent, hardened criminals that are ready to strike with dangerous weapons.

Below is a screenshot of a chart showing the motion detected by the Argon.

The link to a live feed can be found by the following url:

https://thingspeak.com/channels/914777/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&type=column&yaxis=Number+of+Motions&yaxismax=2&yaxismin=0

You can also check out our quick video showing how our alarm can help you!

Code

// First photon, Motion sensor by Jeffrey Cecil
int inputPin = D2;              
int ledPin = D5;                
int pirState = LOW;             
int val = 0;        
int calibrateTime = 10000;      
int ledd = D7;

void setup()
{
  pinMode( ledPin, OUTPUT );
  pinMode(inputPin, INPUT);     
  pinMode(ledd, OUTPUT);
}

void loop()
{

  
  if ( calibrated() )
  {

    readTheSensor();

   
    reportTheData();
    
    
    readTheIncoming();
    
  }
}

void readTheSensor() {
  val = digitalRead(inputPin);
}

bool calibrated() {
  return millis() - calibrateTime > 0;
}

void reportTheData() {

  
  if (val == HIGH) {

   
    if (pirState == LOW) {
     
      Particle.publish("49er_mtb123456", "Motion sensed");
      
      pirState = HIGH;
      setLED( pirState );
    }
  } else {
    if (pirState == HIGH) {
     
      pirState = LOW;
      setLED( pirState );
    }
  }
}


void readTheIncoming() {
  
 Particle.subscribe("49er_mtb12345", myHandler, "Message Recieved by Second Argon");
delay(1000);
}


void myHandler(const char *event, const char *data)
{
  digitalWrite(ledd, HIGH);
  delay(100);
  digitalWrite(ledd, LOW);
  delay(100);
  digitalWrite(ledd, HIGH);
  delay(100);
  digitalWrite(ledd, LOW);
  delay(100);
  digitalWrite(ledd, HIGH);
  delay(100);
  digitalWrite(ledd, LOW);
  delay(100);
}


 void setLED( int state )
{
  digitalWrite( ledPin, state );
}

//Buzzer Side by Hal
int led = D7;
int Buzzer = D0;
int state = 0;
int pirState = LOW;
int led2pin = D5;

void setup() {
pinMode(led, OUTPUT);
digitalWrite(led, LOW);
pinMode(Buzzer,OUTPUT);
digitalWrite(Buzzer, LOW);
}


void myHandler(const char *event, const char *data)
{
  digitalWrite(led, HIGH);
  delay(100);
  digitalWrite(led, LOW);
  delay(100);
 
  digitalWrite(Buzzer,HIGH);
  	delay(100);
  digitalWrite(Buzzer,LOW);
 
  digitalWrite(led, HIGH);
  delay(100);
  digitalWrite(led, LOW);
  delay(100);
 
  digitalWrite(Buzzer,HIGH);
  	delay(100);
  	digitalWrite(Buzzer,LOW);
 	
 Particle.publish("49er_mtb12345", "1");
 
}

void loop() {
Particle.subscribe("49er_mtb123456", myHandler, "1");
delay(1000);
 	
}

Credits

Jeffrey Cecil

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Hal Kosik

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MEGR 3171L Fall 2019 PIR Motion Sensing Security System

Things used in this project

Hardware components

Story

Schematics

Motion Sensor Wiring Diagram

LED Wiring Diagram

Code

First Argon with the PIR sensor

Second Argon with Notification LED

Credits

Jeffrey Cecil

Hal Kosik

Comments

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MEGR 3171L Fall 2019 PIR Motion Sensing Security System

MEGR 3171L Fall 2019 PIR Motion Sensing Security System

Things used in this project

Hardware components

Story

Schematics

Motion Sensor Wiring Diagram

LED Wiring Diagram

Code

First Argon with the PIR sensor

Second Argon with Notification LED

Credits

Jeffrey Cecil

Hal Kosik

Comments

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