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Published December 6, 2020

Group 11 2 State Weather Comparison

During the Covid Pandemic many students were separated due to online learning. We will be comparing daily life of weather in 2 states

IntermediateFull instructions provided2 hours174

Things used in this project

Hardware components

Particle Argon

DHT11 Temperature & Humidity Sensor (4 pins)

Resistor 220 ohm

water level sensor

LED (generic)

Breadboard (generic)

Software apps and online services

Particle Build Web IDE

ThingSpeak API

Story

Background:

For our project, we decided to create a little weather experiment. We used a DHT11 Temperature & Humidity sensor along with a Water Level sensor to get generalized info on the weather in our areas. These devices are sending data back and forth from Pittsburgh, PA to Charlotte, NC. These devices can be used in any location as long as the Particle Argon is able to connect to a WiFi signal. To successfully complete this project we had to connect two boards, named Ford_IOT(Charlotte) and JoshIOT (Pittsburgh) and have them communicate with each other.

The devices used are those listed above in the "Thing" section. The devices are used to monitor to measure the ever changing weather conditions in different locations. The Water Level sensor reads if it is raining or if it is nice and sunny. If it raining in one location, a signal will be sent to the other Argon board turning on the red LED light. This is to let the owner of the argon know that the weather in the other location is undesirable. The DHT sensor also reads out the Temperature and Humidity of each location. This data does not get sent to each device, but does get sent to https://thingspeak.com/channels/1248317. This website has graphs of all of the data that the two devices record. It must be noted that the data when you click on the website may not show both operational due to one of the devices not being on to record data.

YoutubeVideo describing the project from Pittsburgh!

ConstructingTheCircuit:

There were two breadboards used for this project, one in each location. Using these breadboards a Particle Argon IOT device is used to connect and transmit the data. More detailed information on wiring locations can be found in the schematics section below. The first device that we connected for use was the DHT 11 Temp and Humidity sensor. This device used the digital output D2 to transmit the data from the breadboard to ThingSpeak.

As you can see above, the LED light was on for the Ford_IOT device. This signifies that it was raining or snowing in Pittsburgh at the time they were both connected on Friday night (12/4/2020).

Below is what the Charlotte breadboard looked like when all of the devices were connected. Images of the Pittsburgh device are shown in the YouTube video below.

Full Project setup

The second sensor that we used was the water level sensor from the ELEGOO V2.0 37 sensor kit. This device used an analog output (A3) to send out the data saying that it was either raining or dry outside.

Water Level Sensor setup

The final part of the project was the LED light to display if it was raining in the other location. This light is also a digital output (D3) that would blink if it was raining in the other location. A 220 ohm resistor had to be used for this device for the light to function properly. For all of the devices above to function properly, a usb connected on the right of the argon in the picture below had to be plugged into a power source.

LED Light Setup

Code

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

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

// This example assumes the sensor to be plugged into CONN2
#define DHTPIN D2     // what pin we're connected to

// Here we define the type of sensor used
#define DHTTYPE DHT11        // DHT 11

DHT dht(DHTPIN, DHTTYPE);

bool humid = false;

TCPClient client;

unsigned long myChannelNumber = 1248317;
const char * myWriteAPIKey = "X2EO5EGJ2NDZHE9B";

int led1 = D3;
int resval = 0;  // Holds pin value
int respin = A3; // sensor pin used
int rp = 0; //rain sensor value
const char *fc;
const char *hc;

void setup() {
   
    ThingSpeak.begin(client);
   
 pinMode(D2, OUTPUT);
 Particle.subscribe("It's Raining", led, "Ford_IOT");
 pinMode(led1, OUTPUT);
 Serial.begin(9600);
 dht.begin();
 
}

void led(const char *event, const char *data) {
if (event){
    
    digitalWrite(led1, HIGH);
    delay (500);
    digitalWrite(led1, Low);
    delay (500);
    
    digitalWrite(led1, HIGH);
    delay (500);
    digitalWrite(led1, Low);
    delay (500);
    
    Particle.publish("Raining Charlotte", PRIVATE);
}
}

void loop() {
   
     resval = analogRead(respin);
   
    if (resval<=100){
        rp = 0;
        Particle.publish("Not Raining in Pittsburgh", String (rp), PRIVATE);
    }
      else if (resval>100 && resval<=2000){
        rp = 1;
        Particle.publish("It's Raining in Pittsburgh", String (rp), PRIVATE);
    }  
  
    delay(1000);
   
    // Wait a few seconds between measurements.
    delay(2000);

    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds
    float hp = dht.getHumidity();
    // Read temperature as Celsius
    float tp = dht.getTempCelcius();
    // Read temperature as Farenheit
    float fp = dht.getTempFarenheit();

    // Check if any reads failed and exit early (to try again).
    if (isnan(hp) || isnan(tp) || isnan(fp)) {
        Serial.println("Failed to read from DHT sensor!");
        return;
    }
   
   Particle.publish("Temperature Pittsburgh", String (fp), PRIVATE);
   Particle.publish("Humidity Pittsburgh", String (hp), PRIVATE);

  ThingSpeak.setField(1,hp);
  ThingSpeak.setField(2,fp);
  ThingSpeak.setField(3,rp); //creates rain channel\

  Serial.print(dht.getHumidity());
  Serial.println("hp");
  Serial.print(dht.getTempFarenheit());
  Serial.println("tp");
  Serial.println("rp"); //outputs rain float value 
   
  //Serial.println("rc"); //outputs Charlotte rain
 
  ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);  

  delay(2000); // ThingSpeak will only accept updates every 2 mins.
}

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

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

// This example assumes the sensor to be plugged into CONN2
#define DHTPIN D2     // what pin we're connected to

// Here we define the type of sensor used
#define DHTTYPE DHT11        // DHT 11

DHT dht(DHTPIN, DHTTYPE);

bool humid = false;

TCPClient client;

unsigned long myChannelNumber = 1248317;
const char * myWriteAPIKey = "X2EO5EGJ2NDZHE9B";

int resval = 0;  // Holds pin value
int respin = A3; // sensor pin used
float rc = 0; //rain sensor value
int led1 = D3;

void setup() {
    
     ThingSpeak.begin(client);
   
 pinMode(D7, OUTPUT);
 Particle.subscribe("It's Raining in Pittsburgh", led, "JoshIOT");
 pinMode(led1, OUTPUT);
 Serial.begin(9600);
 dht.begin();
 
  Particle.subscribe("It's Raining in Pittsburgh", led, "JoshIOT");
 
 pinMode(led1, OUTPUT);
 
}
 
void led(const char *event, const char *data) {
if (event){
    
    digitalWrite(led1, HIGH);
    delay (500);
    digitalWrite(led1, Low);
    delay (500);
    
    digitalWrite(led1, HIGH);
    delay (500);
    digitalWrite(led1, Low);
    delay (500);
    
    Particle.publish("Raining Pittsburgh", PRIVATE);
}
}

void loop() {
   
     resval = analogRead(respin);
   
    if (resval<=100){
        rc = 0;
        Particle.publish("Not Raining", String (rc), PRIVATE);
    }
      else if (resval>100 && resval<=2000){
        rc = 1;
        Particle.publish("It's Raining", String (rc), PRIVATE);
    }  

    delay(1000);
   
    // Wait a few seconds between measurements.
    delay(2000);

    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds
    float hc = dht.getHumidity();
    // Read temperature as Celsius
    float tc = dht.getTempCelcius();
    // Read temperature as Farenheit
    float fc = dht.getTempFarenheit();

    // Check if any reads failed and exit early (to try again).
    if (isnan(hc) || isnan(tc) || isnan(fc)) {
        Serial.println("Failed to read from DHT sensor!");
        return;
    }
   
    Particle.publish("Temperature_Char", String (fc), PRIVATE);
    Particle.publish("Humidity_Char", String (hc), PRIVATE);
    
  ThingSpeak.setField(4,hc);
  ThingSpeak.setField(5,fc);
  ThingSpeak.setField(6,rc);
 
  Serial.print(dht.getHumidity());
  Serial.println("hc");
  Serial.print(dht.getTempFarenheit());
  Serial.println("tc");
  Serial.println("rc"); //outputs rain float value
  
  ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);  

  delay(2000); // ThingSpeak will only accept updates every 2 mins.

}

Credits

Joshua Lewis

1 project • 1 follower

Zachary Ford

0 projects • 0 followers

Mechanical Engineer May '22

Group 11 2 State Weather Comparison