Published November 27, 2019

PIR Motion Detector

Motion detector that triggers a change to an LCD screen.

BeginnerProtip1,015

Things used in this project

Hardware components

Particle Argon

PIR Motion Sensor (generic)

Adafruit Standard LCD - 16x2 White on Blue

Rotary potentiometer (generic)

particle antenna

Jumper wires (generic)

Software apps and online services

Particle Build Web IDE

ThingSpeak API

Fritzing

Story

Two men from a foreign land find their way to the land of opportunity. After introducing revolutionary technology, the world was forever grateful for their efforts. This project shows one man who insanely loves golf! He decided to create a project that included a motion sensor and an LCD screen to inform his friends on how much he loves golf while sleeping.

Details

One argon, named "Forex, " contains the LCD. The other argon, named "hamster_penguin, " contains a motion detector. As shown in the code provided, the LCD argon is subscribed to the motion detector argon, allowing for signals to be sent to and from each argon. When motion is detected, Forex is sent a signal to change what is printed on the LCD. When the LCD is changed, a signal is then sent back to hamster to blink an LED on the argon.

Ex) "Sleeping..." is read on the LCD when the motion detector is not triggered, but "I love Golf" is printed on the LCD when it is sent a positive signal from the motion-detecting argon.

Tips:

The motion detector sensitivity can be changed with the on-board potentiometers included on the device circuit board.
Make sure all wires have a good connection
After each flash of an argon, unplug the device, then plug it back in.
When the argon is malfunctioning, put it into safe mode, and then re-flash the code. After flashing, unplug the device, then plug it back in.

Pictures*

https://docs.google.com/document/d/1SMkcOGuJwm6R75FhBSL_dyvPb3njkLdVLi0zVaitW9Y/edit?usp=sharing

*Hackster.io uploaded images upside down so please view the Google doc link above.

Video

Graph

PIR Motion Sensor Data

https://thingspeak.com/channels/919100

Code

// This #include statement was automatically added by the Particle IDE.


#include "application.h"
#include <LiquidCrystal.h>
/*
  LiquidCrystal Library - Hello Sparky
 
 Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
 library works with all LCD displays that are compatible with the
 Hitachi HD44780 driver. There are many of them out there, and you
 can usually tell them by the 16-pin interface.
 
 This sketch prints "Hello World!" to the LCD
 and shows the time.
 
  The circuit:
 * LCD RS pin to digital pin D0
 * LCD EN pin to digital pin D1
 * LCD D4 pin to digital pin D2
 * LCD D5 pin to digital pin D3
 * LCD D6 pin to digital pin D4
 * LCD D7 pin to digital pin D5
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)
 * connect R/W (pin 5) to ground
 
 Library originally added 18 Apr 2008
 by David A. Mellis
 library modified 5 Jul 2009
 by Limor Fried (http://www.ladyada.net)
 example added 9 Jul 2009
 by Tom Igoe
 modified 8 Feb 2010
 by Tom Igoe
 
 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */


// Make sure to update these to match how you've wired your pins.
//pinout on LCD [RS, EN, D4, D5, D6, D7];
// pin nums LCD  [ 4,  6, 11, 12, 13, 14];
// Shield Shield [RS, EN, D4, D5, D6, D7];
// Spark Core    [D3, D5, D2, D4, D7, D8];
LiquidCrystal lcd(D0, D1, D2, D3, D4, D5);
int temperature;
int ledwork;
void analogvalue(const char *event, const char *data )
{
    String pew = data;
    temperature = pew.toInt();
}


void setup() {
  
        Particle.subscribe("PIRMOTION", analogvalue, ALL_DEVICES);
  // set up the LCD's number of columns and rows:
  lcd.begin(16,2);
  // Print a message to the LCD.
Particle.publish("led", ledwork, ALL_DEVICES);
  
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):

  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  if ( temperature > 3000 ) {
    lcd.begin(16,2);
    lcd.print("I love Golf");
      delay (1000);
    ledwork = 1;
      
    }
    else {
        lcd.begin(16,2);
        lcd.print("sleeping...");
        led = 0;
    }
  }

// This #include statement was automatically added by the Particle IDE.
#include <ThingSpeak.h>

// This #include statement was automatically added by the Particle IDE.


int analogvalue = 0;

int led2 = D7; // Instead of writing D7 over and over again, we'll write led2
// This one is the little blue LED on your board. On the Photon it is next to D7, and on the Core it is next to the USB jack.



unsigned long myChannelNumber = 919100;
const char * myWriteAPIKey = "T0CB3GU5EV6G4373";


void setup()
{
  Particle.variable("analogvalue", analogvalue);

  pinMode(A0, INPUT);
  
  // Subscribe to the integration response event
  Particle.subscribe("hook-response/Motion", myHandler, MY_DEVICES);
  
   pinMode(led2, OUTPUT);
  
  
}
void myHandler(const char *event, const char *data) {
  // Handle the integration response
}


void loop()
{
  // Read the analog value of the sensor (TMP36)
  analogvalue = analogRead(A0);


Particle.publish("Motion", String(analogvalue), ALL_DEVICES);
  delay(1000);
Particle.subscribe("led", ledwork, ALL_DEVICES);
  // below: if the lcd is changed, the value of ledwork will be 1, and then blink the led on the motion argon.
  if ledwork = 1 {
        
        digitalWrite(led2, HIGH);

      // We'll leave it on for 1 second...
      delay(1000);

      // Then we'll turn it off...
    
      digitalWrite(led2, LOW);

      // Wait 1 second...
      delay(1000);
      
  }
  

}

Credits

Benjamin Campbell

1 project • 1 follower

Zack Mayes