MEGR 3171 Long Distance Wi-Fi Thermometer

Have you ever had the problem of wanting to know the exact temperature of wherever you are at that exact moment? Look no further!

BeginnerFull instructions provided103

MEGR 3171 Long Distance Wi-Fi Thermometer

Things used in this project

Hardware components

Particle Argon

Jumper wires (generic)

Breadboard (generic)

ELEGOO 37-in-1 Sensor Module Kit V1.0

Software apps and online services

Particle Build Web IDE

Hand tools and fabrication machines

Wire Stripper & Cutter, 18-10 AWG / 0.75-4mm² Capacity Wires

Story

Have you ever had the problem of wanting to know the exact temperature of wherever you are at that exact moment? Well, the answer is here! Check out this temperature sensor which uses a button to tell you the temperature when and wherever you want!

There are 2 Particle Argons used for this project One of the Argons (Argon 1) is connected to the RGB light indicator and the push button. The other Argon (Argon 2) is connected to the temperature sensor. When the button is pressed the Argon 1 sends a signal to Argon 2 to tell the temperature sensor to start recording. Then, Argon 2 sends the recorded temperature data back to Argon 1 which then makes the RGB light up red, blue, or green. If the light is red, then the temperature being recorded is above 72°F. If the light is blue, then the recorded temperature is below 72°F. The green light shows that the sensor is on and started recording the temperature.

MEGR 3171 IOT Project: Long Distance WiFi Thermometer

Code

int temp_f = 0;


void temperatureHandler(const char *event, const char *data){
    //sets a new string, which i have defined as "pew" to take in the temperature data
    String pew = data;
    //Converts this new string "pew" into the previously defined integer "temperature"
    temp_f = pew.toInt();
}

void setup()  
{ 
    //D2 Green Pin
    //D3 BLUE Pin 
    //D4 RED Pin
 pinMode(D2, OUTPUT);
 pinMode(D3, OUTPUT); 
 pinMode(D4, OUTPUT);
 pinMode(A0, INPUT_PULLUP);   
    
 //gets temp data from the cloud
 Particle.subscribe("temperature", temperatureHandler, MY_DEVICES);
 
 
} 

void loop()  
{ 
    if (digitalRead(A0) == HIGH) 
 { 
     //Light should be off when button is not pushed
   digitalWrite(D2, HIGH);
   digitalWrite(D3, LOW); 
   digitalWrite(D4, LOW);
 }
 
 else if (digitalRead(A0) == LOW) 
 { 
    
    if (temp_f >= 72)
   {
       //Red Light comes on to show hot temp
       digitalWrite(D2, LOW);
       digitalWrite(D3, LOW);
       digitalWrite(D4, HIGH); 
   }
   else if (temp_f < 72)
   {
       //Blue Light comes on to show cool temp
       digitalWrite(D2, LOW);
       digitalWrite(D3, HIGH);
       digitalWrite(D4, LOW);
   }
   
 } 
  
}

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


int analogvalue = 0;
int temp_f;
TCPClient client;

unsigned long myChannelNumber = 2108897;
const char * myWriteAPIKey = "H2ZDLWSDQMY46XGG";

void setup(){

  ThingSpeak.begin(client);
  
  Particle.variable("analogvalue", analogvalue);
  Particle.variable("temp_f", temp_f);
 
  pinMode(A0, INPUT);
  
}

void loop()
{
    delay(1500);
  // Read the value of the TMP36 sensor
  analogvalue = analogRead(A0);
  //Converts the reading from voltage to F
  temp_f = (analogvalue*-.08099688473520249+134); //To be accurate
  
  
  
  Particle.publish("temperature", String(temp_f));
  // sends data to cloud and graphs it
  ThingSpeak.setField(1,temp_f);
  ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  delay(20000);
  //delays data read to every 20 seconds

}

Credits

Will Vitola

1 project • 1 follower

Jaden Preston

1 project • 1 follower

MEGR 3171 Long Distance Wi-Fi Thermometer