Maureen Thomas
Published © GPL3+

Lane Tech HS - PCL - IR Burglar Alarm with IOT relay twist

Use a photon to control IR LEDs as a object detector to trigger a relay giving power to an extension cord.

IntermediateFull instructions provided10 hours1,003
Lane Tech HS - PCL - IR Burglar Alarm with IOT relay twist

Things used in this project

Hardware components

Photon
Particle Photon
×1
Buzzer
Buzzer
×1
IR receiver (generic)
led
×1
IR transmitter (generic)
led
×1
Relay (generic)
×1
Coin Cell Battery CR2032
Coin Cell Battery CR2032
×1
Coin Cell Battery Holder
Coin Cell Battery Holder
×1
Resistor 100 ohm
Resistor 100 ohm
×1
Resistor 330 ohm
Resistor 330 ohm
×1
Jumper wires (generic)
Jumper wires (generic)
×3
Male/Female Jumper Wires
Male/Female Jumper Wires
×6
small PCB board
×1
extension cord
×1

Software apps and online services

Particle

Hand tools and fabrication machines

wire clippers
wire stripper
Soldering iron (generic)
Soldering iron (generic)

Story

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Schematics

Schematics

Screen shot 2018 03 11 at 11 47 30 pm ullwjcnuke

Code

RelaywithParticle

Java
int analogInPin = A0;  // Analog input pin that the receiver is attached to
int sensorValue = 0;
bool checker = true; //true means that loop is running
int buzzerpin = D0; //has to be a PWM (Pulse Width Modulation)     
    
void setup() {
    
    
    pinMode(6, OUTPUT); //for the relay
    pinMode(analogInPin, INPUT); //reading the IR reciever led
    Particle.function("switch", pinSwitch); //IOT on/off
    Serial.begin(9600);
    pinMode( buzzerpin, OUTPUT ); //for the buzzer

}

void loop() {

 // read the analog in value:
   sensorValue = analogRead(analogInPin);

  // print the results to the serial monitor:
  Serial.print("\nsensor = ");
  Serial.print(sensorValue);
  //the threshold found fron analog In Out program was when object is detected, the sensor value is below 100
  //the threshold varies for different sets of emitter-receiver pairs
  if(sensorValue < 100 && (checker)){ //checks if object is there or not and 
    digitalWrite(6, HIGH);
    Serial.print("\No object in Front");
     noTone(buzzerpin);
    }
  else if (checker)
  {
    digitalWrite(6, LOW);
    Serial.print("\nObject Detected");
    tone(buzzerpin, 2551, 1000); //plays G3 for a second 
   
    }
   //delay(500)
  
}

int pinSwitch(String state)
{
    if (state.equals("on"))
    {
        checker = false; //disables loop
        digitalWrite(6, LOW);
        
    }
    else if (state.equals("off"))
    {
        checker = false; //disables loop
        digitalWrite(6, HIGH); //high is off
    }
    else if(state.equals("loop")) //enables the loop and sensor
    {
        checker = true;
    }
    return 1;
}

Credits

Maureen Thomas

Maureen Thomas

2 projects • 3 followers
Thanks to Goks_If.

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