Published November 28, 2016

Door Ajar Sensor

This project checks if your door has been opened and keeps track of when it's opened or closed.

BeginnerShowcase (no instructions)6 hours839

Story

This project was made to note when someone opens your door while you are away. It can also monitor and record how many times the door is opened in a day. I decided to make this because sometimes, when I rush out for class, I forget to lock my door and will wonder if a roommate or someone in the office has opened my door.

It works using two wires that are attached to the door; and when they make contact with each other, the particle reads it and sees that the door is closed. When the door is opened, it will send a notification to your phone that your door has been opened through IF THIS THEN THAT.

Code

DoorSensor

int pinvalue = 1;
int status=0;

int led = D7;

void setup() {
    
    pinMode(led,OUTPUT);
    pinMode(D0,INPUT);
    
    Particle.variable("pinvalue", &pinvalue, INT);
    Particle.variable("status", &status, INT);
    
    Particle.function("pinvalue",pinvalueTracker);

    Particle.subscribe("checkdoor",doorLightValue);
    
}

void loop() {
        status = digitalRead(led);
        pinvalue = digitalRead(D0);
        delay(10000);

    if (pinvalue==0) {
        Particle.publish("checkdoor","open");
        
    }
    if (pinvalue==1) {
        Particle.publish("checkdoor","closed");
    }
}

void doorLightValue(const char *event, const char *data)
{
  if  (strcmp(data,"open")==0) {
   
    digitalWrite(led,HIGH);
    delay(5000);
   
  }
  else if (strcmp(data,"closed")==0) {

    digitalWrite(led,LOW);
    delay(5000);
  }
   
}

int pinvalueTracker(String command) {

    if (command=="on") {
        digitalWrite(led,HIGH);
     
        return 1;
    }
    else if (command=="off") {
        digitalWrite(led,LOW);
        
        return 0;
    }
   
}

Credits

Travis Johnston

1 project • 1 follower

Door Ajar Sensor

Story

Schematics

Door Ajar Checker

Sensor Setup

Sensor In Action

Door Wire Set Up

Door Opening and Closing

Code

DoorSensor

Credits

Travis Johnston

Comments

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Door Ajar Sensor

Door Ajar Sensor

Story

Schematics

Door Ajar Checker

Sensor Setup

Sensor In Action

Door Wire Set Up

Door Opening and Closing

Code

DoorSensor

Credits

Travis Johnston

Comments

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