Goal

George Westphall

•

Abassie Thomas

•

Daniel Sanford

Published April 16, 2023 © GPL3+

Golf Green Moisture, Temperature and Humidity Sensor

Golf greens often require a lot of labor in order to maintain them. This project plans to make that job easier.

IntermediateShowcase (no instructions)18 hours117

Golf Green Moisture, Temperature and Humidity Sensor

Things used in this project

Hardware components

Particle Argon

DHT11 Temperature & Humidity Sensor (4 pins)

DFRobot Gravity: Analog Capacitive Soil Moisture Sensor- Corrosion Resistant

Jumper wires (generic)

LED (generic)

Software apps and online services

ThingSpeak API

Story

Goal:

Our goal for this project was to develop a set of sensors that would display the moisture of the golf green as well as the surrounding temperature and humidity. We also desired to create an alert system that would flash two LEDs depending on whether it was a moisture alert or a temperature alert.

Project Overview:

We first started by researching the different sensors and components we would need such as the DHT11 and the DFRobot Gravity: Analog Capacitive Soil Moisture Sensor- Corrosion Resistant. Once we had our desired parts we then created the circuit schematics for our respective Argons. After we set up our circuits, we did a lot of research on the actual code that we would need to make our sensors work the way we needed them to. It was very tough due to the fact none of us had any prior experience with any particle device and very little coding knowledge. We did our best to create the circuits you see below and the code that corresponds to them. The way our project works is we have two Argons collecting data, one using the DHT11 and the other using the Soil Moisture sensor. Both of these Argons take the data recorded by the sensors and display them on our ThingSpeak page. These two Argons will also send alerts to a third Argon if the moisture or temperature is above the desired values. The third Argon will then flash an LED visually alerting the operator of the alert. Theoretically, the temperature and moisture sensor Argons would be either placed around the green or be a handheld package. While the third Argon would be located near an operator.

ThingSpeak Channel Link:

By clicking on the link below you can see all our graphs on the moisture, temperature, and humidity data that our sensors captured.

https://thingspeak.com/channels/2102454

IOT Group 20 Video:

The video below is a demonstration of the sensors producing live data from the communications between the 3 argon devices.

Video from YouTube: SanfordEngineers

Code

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

int moisture_pin = A1;

TCPClient client;


unsigned long myChannelNumber = 2102454;
const char * myWriteAPIKey = "FSTNOIUAZK05HSTB";


void setup() {
   
    ThingSpeak.begin(client);
    Serial.begin(9600);

}

void loop() {
   
    delay(2000);
   
    int moisture_analog = analogRead(moisture_pin);
    float moisture_percentage = (100 - ((moisture_analog/4095.00) * 100 ));
    float m = moisture_percentage;
   
    int sensor_analog;
   
   
    ThingSpeak.setField(3,m);
    ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
   
   
   
    Serial.print("Moisture Percentage = ");
    Serial.print(moisture_percentage);
    Serial.print("%\n\n");
   
    delay(20000);
   
      if(m<=20){
          Particle.publish("Moist_20Sensor","DRY",PUBLIC);
    }
    else{
      Particle.publish("Moist_20Sensor","MOIST",PUBLIC);
      }
     
    delay(1000);
}

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

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






#define DHTPIN D6     // what pin we're connected to

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

DHT dht(DHTPIN, DHTTYPE);
TCPClient client;


unsigned long myChannelNumber = 2102454;
const char * myWriteAPIKey = "FSTNOIUAZK05HSTB";


void setup() {
    
    ThingSpeak.begin(client);
    dht.begin();
}

void loop() {
    
    delay(2000);
    
   float h = dht.getHumidity();
    // Read temperature as Celsius
    float t = dht.getTempCelcius();
    // Read temperature as Farenheit
    float f = dht.getTempFarenheit();
   

    
    ThingSpeak.setField(1,f);
    ThingSpeak.setField(2,h);
    ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
    
    Serial.print(dht.getHumidity());
  Serial.println("h");
  Serial.print(dht.getTempFarenheit());
  Serial.println("t");
    
    delay(30000);
    
    
    if(f>=80){
       Particle.publish("Temp_20Sensor","HOT",PUBLIC);
    }
    else{
      Particle.publish("Temp_20Sensor","LESS HOT",PUBLIC);
      }
      
    delay(1000);
   
    
}

int Led1 = D7;
int Led2 = D6;

void setup() {
    
Particle.subscribe("Temp_20Sensor", Temp_20Sesnor_Handler, "e00fce685149b691c0681dd2");
Particle.subscribe("Moist_20Sensor", Moist_20Sesnor_Handler,"e00fce68a82e99814c342878");

Serial.begin(9600);



}

void loop() {

}

void Temp_20Sesnor_Handler(const char *event, const char *data){
    
   digitalWrite(led1,HIGH);
   
    if (strcmp(data,"LESS HOT")==0) {
        
        
       digitalWrite(led1,LOW);
    }
    else if (strcmp(data,"HOT")==0) {
        
        digitalWrite(led1,HIGH);
       
    }

    delay(1000);
}

void Moist_20Sesnor_Handler(const char *event, const char *data){
    
   digitalWrite(led2,HIGH);
   
    if (strcmp(data,"MOIST")==0) {
        
        
       digitalWrite(led2,LOW);
    }
    else if (strcmp(data,"DRY")==0) {
        
        digitalWrite(led2,HIGH);
       
    }

    delay(1000);
}

Credits

Comments

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Golf Green Moisture, Temperature and Humidity Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Goal:

Schematics

Moisture Sensor Circuit Diagram

Moisture Sensor

Temperature and Humidity Sensor Circuit

Temperature and Humidity Sensor

LED Circuit Diagram

LED Circuit

Project Schematics

Code

Moisture Sensor Code

Temperature and Humidity Sensor

LED ALERT CODE

Credits

George Westphall

Abassie Thomas

Daniel Sanford

Comments

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Golf Green Moisture, Temperature and Humidity Sensor

Golf Green Moisture, Temperature and Humidity Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Goal:

Schematics

Moisture Sensor Circuit Diagram

Moisture Sensor

Temperature and Humidity Sensor Circuit

Temperature and Humidity Sensor

LED Circuit Diagram

LED Circuit

Project Schematics

Code

Moisture Sensor Code

Temperature and Humidity Sensor

LED ALERT CODE

Credits

George Westphall

Abassie Thomas

Daniel Sanford

Comments

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