IR Wireless Temperature Sensor Using Ultrasonic sensor HCSR04 & MLX90614

Just Do Electronics January 31, 2021

Code :-

 
//Prateek
//www.prateeks.in

#include <Wire.h>
#include <Adafruit_MLX90614.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 16, 2);


Adafruit_MLX90614 mlx = Adafruit_MLX90614();


const int trigPin = 7;
const int echoPin = 6;
const int buzzer  = A3;

double temp_obj;

long duration;
int distance = 0;


void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT);
  pinMode(buzzer, OUTPUT);// Sets the echoPin as an Input
  mlx.begin();

  lcd.setCursor(3, 0);
  lcd.print("WelCome To");
  lcd.setCursor(0, 1);
  lcd.print("JustDoElectronic");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Design By :-");
  lcd.setCursor(0, 1);
  lcd.print("Prateek");
  delay(2000);
}

void loop() {
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);  //read the raw timer value
  distance = duration * 0.034 / 2; //Calculate the distance


  lcd.clear();
  lcd.print("Distance:");
  lcd.println(distance);
  lcd.setCursor(0, 1);
  lcd.print("Temp.   :");
  lcd.print(mlx.readObjectTempC());
  lcd.println("*C");

  temp_obj = mlx.readObjectTempC();
  if (temp_obj > 37) {
    digitalWrite(8, HIGH);
    Serial.print("Warning...HIGH TEMP...");
    lcd.clear();
    lcd.print("HIGH TEMP");
    delay(5000);
  }
  else {
    digitalWrite(8, LOW);
  }

    delay(500);
  }

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