PS4 Temperature Monitor

A simple project that utilizes 2 Photons and a temperature sensor to set off an alarm when a device gets too hot.

BeginnerShowcase (no instructions)3 hours6,396

Things used in this project

Hardware components

Particle Photon

Breadboard (generic)

Resistor 10k ohm

Temperature Sensor

LED (generic)

Software apps and online services

Particle Pi

Story

About

The purpose of this project is to monitor the heat output of an electronic device and notify the user if a threshold is met. This can be useful in cases where a device might run slow or in some cases die out due to overheating. The system was tested on a PlayStation 4.

Two Particle Photons were used, one to monitor the temperature and one to set off the alarm. All components used are provided in the Particle Maker kit. The DS18B20 was the temperature sensor of choice.

The Photon records temperature data in Fahrenheit every five seconds and saves it on a Google sheet using IFTTT. However, due to the limitations of IFTTT, the spreadsheet only logs data every minute. The data that is sent to the second photon is in the form of an event. An event is published whenever the temperature exceeds 90 degrees. The power source for both the Photons utilizes USB outlets on the PS4 ensuring they only operate when the PlayStation is powered on.

The second Photon has two LED lights attached to it enabling it to light up a visual alarm. This Photon is subscribed to the event that will be published when the temperature rises above 90 degrees and sets off the LED lights when it is published.

Video

Here is a YouTube video of our project.

Temperature Data Graph

This is a graph of the temperature data from the photons and IFTTT.

IFTTT Activity Feed

This is a screenshot of the IFTTT activity feed.

Code

// Declare variables and assign photon pins
int on=D7;
int on1=D6;

void setup() {
  // Initialize the outputs
  pinMode(on,OUTPUT);
  digitalWrite(on,LOW);
  pinMode(on1,OUTPUT);
  digitalWrite(on1,LOW);
  // Subscibe to the event sent by the other photon
Particle.subscribe("testevent", testevent1,"36001c000c47343438323536");
}
// Code that tells the photon what to do in the event the event is published
void testevent1(const char *event, const char *data)
{
  // Makes the photon blink thrice
delay(1000);
digitalWrite(on,HIGH);
digitalWrite(on1,HIGH);
delay(1000);
digitalWrite(on,LOW);
digitalWrite(on1,LOW);
delay(1000);
digitalWrite(on,HIGH);
digitalWrite(on1,HIGH);
delay(2500);
digitalWrite(on,LOW);
digitalWrite(on1,LOW);
delay(2500);
digitalWrite(on,HIGH);
digitalWrite(on1,HIGH);
delay(5000);
digitalWrite(on,LOW);
digitalWrite(on1,LOW);
delay(5000);

}

// This #include statement was automatically added by the Spark IDE.
#include "OneWire.h"

// This #include statement was automatically added by the Spark IDE.
#include "spark-dallas-temperature.h"

// -----------------
// Read temperature
// -----------------

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(D0 );

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature dallas(&oneWire);

// Create a variable that will store the temperature value
double temperature = 0.0;
double temperatureF = 0.0;
int k = 0;

void setup()
{
  // Register a Particle variable here
  Particle.variable("temperature", &temperature, DOUBLE);
  Particle.variable("temperatureF", &temperatureF, DOUBLE);

  // setup the library
  dallas.begin();
}

void loop()
{
  // Request temperature conversion

  dallas.requestTemperatures();

  // get the temperature in Celcius
  float tempC = dallas.getTempCByIndex(0);
  // convert to double
  temperature = (double)tempC;

  // convert to Fahrenheit
  float tempF = DallasTemperature::toFahrenheit( tempC );
  // convert to double
  temperatureF = (double)tempF;
// delays the loop by five seconds
  delay(5000);
// variable dedclared so it can be linked to IFTTT
Particle.variable("Temperature", temperatureF);
// Publishes an event when the temperature exceeds 90
// The tempearture had to be less than 110 degrees to prevent outliers
if (temperatureF > 90 && temperatureF< 110)
{
  Particle.publish("testevent", "testevent1", PUBLIC);
}
}

Credits

Joachim Sagayaraj

1 project • 0 followers

Mechanical Engineering student at UNC Charlotte

Contact

PS4 Temperature Monitor