Smart Door Motion Sensor

This is a generic sensor that anyone can adapt and use for their particular situation.

BeginnerShowcase (no instructions)3 hours1,147

Things used in this project

Hardware components

Particle Photon

Apple iPhone

Breadboard (generic)

PIR Motion Sensor (generic)

LED (generic)

Buzzer

Resistor 330 ohm

Story

Demonstration

About

Motion sensors in today's world are becoming more and more prevalent. Nowadays, it is nice to be alarmed when someone is at the entrance door of a house. This alarm will give homeowners a better chance to determine the situation and execute their plans accordingly. This alarm system is an effective home security system and will not break the bank. Another way to use this motion sensor is as a pet sensor; we came up with this idea because my dog is mute. To avoid accidents, this could function as a sort of alert system that one's dog is near the door waiting to be taken out (works exceptionally well when you are in another room).

Of course, during the day when people walk in and out of one's home, the alarm can be turned off. The motion sensor can be on all day or set for certain times. This is all up to the owner's discretion.

This sensor will notify the user when someone is near their entrance door. There are three ways you could be notified: through the LEDs, an SMS message and/or a buzzer. It will alarm the owner with a buzzer which goes on and off for a certain set time. The time the buzzer activates is dependent on the motion sensor and how long an object is in front of the sensor. Time delays can be coded easily for shorter or longer sensor detection.

At the end of the day, the owner can program this code to their liking.

Code

int ledPin = D4;                 // PIN chosen for LED 
int inputPin = D1;             // Chosen pin for motion sensor reciever

    



void setup() {
  pinMode(ledPin, OUTPUT);       // Sets the output for the led
  pinMode(inputPin, INPUT);     //set input as input



}



void loop() {
  if (digitalRead(inputPin) == HIGH) {  // checks if the motion sensor output is on HIGH
    digitalWrite(ledPin, HIGH);         // tells the code to turn the led on, if HIGH
   Particle.publish("motion_detected", "1" );    //someone's at door
    
   
   
    
  } else {
    digitalWrite(ledPin, LOW); // turns LED OFF if no input
  
    Particle.publish("no_motion", "0");
  }
  delay(3000);                           // wait 3.0s
}

int led=D2;           // Sets pin for LED 

int person_moving;



void setup() {

     pinMode(led,OUTPUT);
     digitalWrite(led,LOW);                                              //sets D2 to LOW
    
     Particle.subscribe("motion_detected",led_on, "590034000a51353531343431");    // communicates with  motion sensor to see if motion is detected
    
     Particle.subscribe("no_motion",led_off, "590034000a51353531343431");  // communicated to motion sensor to see if no motion is detected
    
     Particle.variable("person_door", person_moving);                 // creates a variable for whether or not there is motion

}

void led_on(const char *event, const char *data) {
 digitalWrite(led,HIGH);                                                // if any motion is detected, LED is turned on
 
}

void led_off(const char *event, const char *data) {                     // if no motion is detected, LED is off
 digitalWrite(led,LOW); 
}
 
void loop() {
    
    person_moving=digitalRead(led);
}

Credits

Phillip Moua

1 project • 0 followers

UNC Charlotte Engineering Student

Larry Saavedra

1 project • 1 follower

Smart Door Motion Sensor