Team 4idiots: 이정후, 김동희, Choi AhYoung, 김민주

Created July 13, 2018

Automatic Residual Checking Spray System

Curious about the amount of pesticide left? Do you want automatic spraying of pesticides?

Things used in this project

Hardware components

WIZnet WIZ750SR-TTL-EVB Kit

Arduino Mega 2560

Ultrasonic Sensor - HC-SR04 (Generic)

DHT11 Temperature & Humidity Sensor (4 pins)

Adafruit RGB Backlight LCD - 16x2

Software apps and online services

Arduino IDE

MQTT

Story

Introduction1

It is a bother for us to have to check often. But what if there is a machine that saves this trouble at regular intervals? We can solve problems caused by forgetting things as well as reduce something troublesome.

Examples include the need to replace liquid soap in a bathroom. Without soap, people may experience discomfort and get complaints. Especially in public places and in service jobs like theater. So people often check the amount of soap residue and replace it when the amount is low. But two problem happens here. First, you often have to check the amount of soap. Second, you might miss or forget when to replace it.

Problem Statement1

Like this, having to check often or over a fixed period of time creates problems. That's why we solved these problems and created a small but helpful machine to better our lives.

Using the above example, an alarm is triggered when the amount of liquid soap remains below a certain amount that you set. Then we can replace them without checking often. In addition to soap, it can be applied to other liquids.

-From Automatic Residual Checking System to Automatic Spray

Further, thinking about how to develop this system and where to use it came to think of the Automatic Spray System. The system we designed in the past was a way to inform us only how much remains are and to notify us when there is less than a certain amount. But the spray system is to inform the environment during the specified time interval and spray liquid automatically.

Introduction2

Examples include the use automatic pesticide sprayer. We implement automatic spray system using interlock between the insecticide. When user activates the application, the system compares current temperature and humidity with set point. If the measured value reaches to set point, the insecticide starts being sprayed periodically.

Problem Statement2

India has many mosquitoes and has a population of many diseases associated with them because of the tropical climates. Especially, incidence of malaria per year is more than 1000 million and the way to avoid Malaria is only to keep away from mosquitoes. So, the products that are able to combat the pests or allow to avoid them are easy to success in India. Considering these conditions of India, we came out with a system that would be helpful to resolve these difficulties.

In addition to pesticide, it can be applied to other areas such as air freshener..

Code

Wiz750SR with Broker and Arduino

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHT.h"

#define DHTPIN 2    
#define DHTTYPE DHT11  

LiquidCrystal_I2C lcd (0x27,16,2);
DHT dht(DHTPIN, DHTTYPE);

char tm[]="tm";
char ht[]="";
char data[10];
int Trig_Pin = 9;
int Echo_Pin = 8;
int Led1 = 10;
int Led2 = 11;

void setup() 
{
  Serial.begin(9600);
  Serial2.begin(9600);
  
  pinMode(Echo_Pin,INPUT);
  pinMode(Trig_Pin,OUTPUT);
  pinMode(Led1,OUTPUT);
  pinMode(Led2,OUTPUT);
 
  lcd.begin(16,2);
  lcd.init();
  lcd.backlight();
  
  dht.begin();
}

void loop() 
{
  unsigned long duration; 
  float distance;
  int top = 15;
  //duration = the time from trig to echo
  //distance = distance from top to liquid
 
  float h = dht.readHumidity(); 
  float t = dht.readTemperature();
  
  if (isnan(h) || isnan(t)) 
  { Serial.println("Failed to read from DHT sensor!"); }
  
  digitalWrite(Trig_Pin,LOW);
  digitalWrite(Echo_Pin,LOW);
  delayMicroseconds(10);
  digitalWrite(Trig_Pin,HIGH);
  delayMicroseconds(10);
  digitalWrite(Trig_Pin,LOW);

  duration = pulseIn(Echo_Pin,HIGH);
  distance = ((float)(340*duration)/10000)/2;

  Serial.print("Residue : ");
  Serial.println(top-distance);
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  
  Serial2.print("/");
  Serial2.print(t);
  Serial2.print("/");    
  Serial2.print(h);
  Serial2.print("/");
  
  delay(1000);


  if((top-distance) < (top*0.1))
  {
    digitalWrite(Led2,HIGH);
    lcd.clear();
    lcd.setCursor(0,1);
    lcd.print("Empty");
    Serial.println("Empty");
    Serial2.println("Empty");
    delay(1000);
    lcd.clear();
  }
  else {digitalWrite(Led2,LOW); Serial2.println('0'); delay(500);}
  
  lcd.setCursor(0,0);
  lcd.print("Temperature : ");
  lcd.setCursor(0,1);
  lcd.print(t);
  delay(500);
  lcd.clear();
  
  lcd.setCursor(0,0);
  lcd.print("Humidity : ");
  lcd.setCursor(0,1);
  lcd.print(h);
  delay(500);
  
  lcd.setCursor(0,0);
  lcd.print("Residue : ");
  lcd.setCursor(0,1);
  lcd.print(top-distance);
  delay(500);
 
if( (t>=27 && t<=36) || (h>=70 && h<=80) )
 {
    digitalWrite(Led1,HIGH);
    lcd.clear();
    delay(500);
    lcd.setCursor(0,0);
    lcd.print("Spray the ");
    lcd.setCursor(0,1);
    lcd.print("pesticide!!");
    Serial.println("temperature data is:  ");
    Serial.println(t);  
   delay(500);
 }
 else { 
 digitalWrite(Led1,LOW);
    delay(500);
}  

}

Automatic Residual Checking Spray System

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Circuit of Ardino and Sensors

Circuit Flow

Code

Wiz750SR with Broker and Arduino

Credits

이정후

김동희

Choi AhYoung

김민주

Comments

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Automatic Residual Checking Spray System

Automatic Residual Checking Spray System

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Circuit of Ardino and Sensors

Circuit Flow

Code

Wiz750SR with Broker and Arduino

Credits

이정후

김동희

Choi AhYoung

김민주

Comments