MEGR 3171 PC Temperature Sensor

This project involves utilizing two Particle Argons to sense PC Temperature and notify the user through the use of LEDs

BeginnerShowcase (no instructions)101

Things used in this project

Hardware components

Particle Argon

Jumper wires (generic)

Anker Power Supply

Temperature Sensor

LED (generic)

Capacitor 10 nF

Resistor 220 ohm

Software apps and online services

Particle Build Web IDE

IFTTT Maker service

Story

Background

With the rise of Covid-19 in the year 2020, we have seen a rise in PC usage with people working at home and others using them for recreation. For some of these new users who may not have the experience or know-how of the ins-and-outs of PCs. We have come up with a simplified method for keeping track of your PC's temperature status.

HowItWorks

Utilizing bi-directional communication, the temperature sensing argon uses a capacitor and TMP36 Temperature sensor to read the temperature of the PC exhaust air. The temperature sensing argon then sends the data to the temperature receiving argon which then turns on a green, yellow, or red LED depending on the temperature range. The D7 LED will light up on the temperature sensing argon as a confirmation that the temperature receiving argon has received the data. The green LED turns on at any temperature at or below 35 degrees Celsius, the yellow LED turns on in between 35 and 50 degrees Celsius, while the red LED turns on at any temperature above 50 degrees Celsius.

Code

int TMP36 = A3;
int Vo;
int reading;
int Temp;
int LedOn;
double temperature = 0.0;
void setup() {
    pinMode(D7, OUTPUT);
    Particle.variable("temperature", &temperature, DOUBLE);
    Particle.subscribe ("Led", abc);
    pinMode (TMP36, INPUT);
}
void loop() {
//converts TMP36 reading into a useable temperature value
  Vo = analogRead(TMP36);
  Temp = (TMP36);
  int reading = analogRead(TMP36);
  double voltage = (reading * 3.3) / 4095.0;
  temperature = (voltage - 0.5) * 100;
//sends data to other argon
  Particle.publish("Celcius", String(temperature), PRIVATE);
  delay(2000);
}
void abc(const char *eventName, const char *data)
{ 
//lights up D7 pin to confirm that the other argon has recieved the data
    digitalWrite(D7, HIGH);
 }

float V=1;
int Led;
int temperature;
void setup() {
    pinMode(D3, OUTPUT);
    pinMode(D2, OUTPUT);
    pinMode(D4, OUTPUT);
    Particle.subscribe ("Celcius", Light, MY_DEVICES);
}
 // Turns on the lights depending on the temperature range specified
void Light(const char *event, String data) {
    temperature=data.toInt();
    if (temperature<=35){
        digitalWrite(D2, HIGH);
        digitalWrite(D3, LOW);
        digitalWrite(D4, LOW);
    }
    else if (temperature>=35 && temperature<= 50){
        digitalWrite(D3, HIGH);
        digitalWrite(D2, LOW);
        digitalWrite(D4, LOW);  
    
    }
    else if (temperature>= 50){
        digitalWrite(D4, HIGH);
        digitalWrite(D2, LOW);
        digitalWrite(D3, LOW);   
    }
    else {
        digitalWrite(D2, LOW);
        digitalWrite(D3, LOW);
        digitalWrite(D4, LOW);
    }
    String connect = String(V);
Particle.publish("Led");
}

Credits

David Doheny

1 project • 0 followers

Will Green

1 project • 0 followers

Thanks to Connor Rice, Alexa Caldwell, and Diot Labs.

MEGR 3171 PC Temperature Sensor