Published November 19, 2018

Motion Alarm 9000

The Motion Alarm 9000 will alert you when anyone enters your room.

IntermediateFull instructions provided1 hour1,083

Things used in this project

Hardware components

5 mm LED: Red

5 mm LED: Yellow

Particle Photon

5mm LED:White

Seeed Studio Grove - PIR Motion Sensor

Buzzer

Software apps and online services

IFTTT Maker service

Google Sheets

Story

Have you ever left your dorm and started worrying if any of your roommates will sneak in and steal your belongings? Well the Motion Alarm 9000 has you covered!

Background

Its coming to waking up right on time for class. You grab all your stuff and bolt out the door, leaving behind your door unlocked. This leaves your room vulnerable for anyone to come in and take what they want. This project uses two photons that communicate with each other to alert you and the thief.

Howitworks.

The first photon has a motion sensor connected to it and a white led. The second photon has a buzzer, 3 red led's and 3 yellow led's. The way the components was setup can be found in the schematic below. IFTTT was also used to send alerts when motion was detected and to create the real time graph.

Photon 1

When the motion sensor on the first photon detects motion, it will publish an event called "Motion1" that the second photon is subscribed to. When the second photon receives this event it will run a command to run the lights and buzzer on and off for 10 seconds. The second photon also publishes an event to first photon to turn on the led to tell you that it received the motion signal.

Photon 2

Front View

Top View

This is also explained in the video.

Demonstration and explanation of the Motion Sensor 9000.

IFTTT Notifications

Below is an example of how the notifications would look like if you added IFTTT connectivity to the your photon Motion Sensor 9000.

IFTTT notification example

RealTimeGraph

This is a small snippet of the motion sensors time online.

Motion Sensor 9000 live action graph

IFTTT connectivity is needed to build this graph.

Code

// First photon, Motion sensor
int inputPin = D0;              
int ledPin = D1;                
int pirState = LOW;             
int val = 0;
int light = D7;

int calibrateTime = 10000;      

void setup()
{
  pinMode( ledPin, OUTPUT );
  pinMode(inputPin, INPUT);     
  digitalWrite(light, LOW);
  pinMode(light, OUTPUT);
  Particle.subscribe("bothways", event2, "400021000c47363433353735");
}
void setLED( int state )
{
  digitalWrite( ledPin, state );
}
void event2(const char *event, const char *data)
{
  digitalWrite(light, HIGH);
  delay(500);
  digitalWrite(light, LOW);
  //Particle.publish("test", "on");
}
void loop()
{

  
  if ( calibrated() )
  {

    readTheSensor();

   
    reportTheData();
  }
}

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

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

void reportTheData() {

  
  if (val == HIGH) {

   
    if (pirState == LOW) {
     
      Particle.publish("Motion1", "Detected");
    //  delay(1500);
      
      pirState = HIGH;
      setLED( pirState );
    }
  } else {
    if (pirState == HIGH) {
     
      pirState = LOW;
      setLED( pirState );
    }
  }
}

//Second Photon, LED
int led = D7;
int led2 = D4;
int led3 = D3;

void setup() {

pinMode(led, OUTPUT);
digitalWrite(led, LOW);
pinMode(led2, OUTPUT);
digitalWrite(led2, LOW);
pinMode(led3, OUTPUT);
digitalWrite(led3, LOW);
Particle.subscribe("Motion1", motion_detected, "34001b000947363339343638");


}

void motion_detected(const char *event, const char *data)
{

  Particle.publish("bothways", "on");
 // digitalWrite(led, HIGH);
  	unsigned long startTime = millis();
	while (digitalRead(D6) != LOW && millis() - startTime < 10000) {
        digitalWrite(led2, HIGH);
        digitalWrite(led, HIGH);
        delay(100);
        digitalWrite(led2, LOW);
        digitalWrite(led, LOW);
        delay(100);
        digitalWrite(led3, HIGH);
        digitalWrite(led, HIGH);
        delay(100);
        digitalWrite(led3, LOW);
        digitalWrite(led, LOW);
	}
//    digitalWrite(led, LOW);
}