Industry Temperature monitoring system using Arduino

Just Do Electronics January 31, 2020

Industry Temperature monitoring system using Arduino | Arduino Project

CIRCUIT DIAGRAM

CODE

 
//PRATEEK
//WWW.PRATEEKS.IN

#include <LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 10, 11, 12, 13);

//const int LED_RED=2; //Red LED
//const int LED_GREEN=4; //Green LED
//const int RELAY=5; //Lock Relay or motor

//Key connections with arduino
//const int up_key=6;
//const int down_key=3;

int SetPoint=30;

void setup(){
  pinMode(LED_RED,OUTPUT);
  pinMode(LED_GREEN,OUTPUT);  
  pinMode(RELAY,OUTPUT);  
  pinMode(up_key,INPUT);
  pinMode(down_key,INPUT);
  
  //Pull up for setpoint keys
  digitalWrite(up_key,HIGH);
  digitalWrite(down_key,HIGH);
  
   // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("AKSHADA - ROHINI");
  delay(1000);  
  lcd.setCursor(0,1); //Move coursor to second Line
  //lcd.print("Temp. Controller");
  digitalWrite(LED_GREEN,HIGH);  //Green LED Off
  digitalWrite(LED_RED,LOW);     //Red LED On
  digitalWrite(RELAY,LOW);       //Turn off Relay
  delay(2000);
}
 
void loop(){
  double Temperature = ((5.0/1024.0) * analogRead(A0)) * 100;  

  lcd.setCursor(0,0);
  lcd.print("Temperature:");    
  lcd.print(Temperature);
  
//Get user input for setpoints  
  if(digitalRead(down_key)==LOW)
  {
    if(SetPoint>0)
    {
      SetPoint--;    
    }
  }
  if(digitalRead(up_key)==LOW)
  {
    if(SetPoint<150)
    {
      SetPoint++;
    }
  }

  lcd.setCursor(0,1);
  lcd.print("Set Point:");
  lcd.print(SetPoint);
  lcd.print("C   ");

if(Temperature > SetPoint)
{
   digitalWrite(RELAY,LOW);    //Turn off heater
   digitalWrite(LED_RED,LOW);
   digitalWrite(LED_GREEN,HIGH);  //Turn on Green LED
}
else
{
  digitalWrite(RELAY,HIGH);    //Turn on heater
  digitalWrite(LED_GREEN,LOW);
  digitalWrite(LED_RED,HIGH);  //Turn on RED LED  
}

  delay(100); //Update at every 100mSeconds
}

0 Comments