College Faculty DashBoard

#define BLYNK_PRINT Serial    
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#define trigPin 13    // pins for first sensor
#define echoPin 12


#define trigPin1 11 // pins for second sensor
#define echoPin1 10

#define trigPin2 9 // pins for third sensor
#define echoPin2 8

#define trigPin3 7  // pins for fourth sensor
#define echoPin3 6

  WidgetLED led1(V1);  // Virtual LEDs for the app
WidgetLED led2(V2);
WidgetLED led3(V3);
WidgetLED led(V0);
char auth[] = "";   // Write your auth code here

void setup() {
  Serial.begin(9600);  // Begin serial communication
  Blynk.begin(auth);   // configure blynk and connect to it's server
  
  pinMode(trigPin, OUTPUT);   // Defining the functions of the pins
  pinMode(echoPin, INPUT);
  
     pinMode(trigPin1, OUTPUT);
  pinMode(echoPin1, INPUT);
   pinMode(trigPin2, OUTPUT);
  pinMode(echoPin2, INPUT);
   pinMode(trigPin3, OUTPUT);
  pinMode(echoPin3, INPUT);

}
void loop() {
  // put your main code here, to run repeatedly:
  long duration,distance1,distance2,distance3, distance,duration2, duration3, duration1 ;                         // defining variables
  digitalWrite(trigPin, LOW);  
  delayMicroseconds(2); 
  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10); 
  digitalWrite(trigPin, LOW);

  
  digitalWrite(trigPin1, LOW);  
  delayMicroseconds(2); 
  digitalWrite(trigPin1, HIGH);

  delayMicroseconds(10); 
  digitalWrite(trigPin1, LOW);

  
  digitalWrite(trigPin2, LOW);  
  delayMicroseconds(2); 
  digitalWrite(trigPin2, HIGH);

  delayMicroseconds(10); 
  digitalWrite(trigPin2, LOW);

  
  digitalWrite(trigPin3, LOW); 
  delayMicroseconds(2); 
  digitalWrite(trigPin3, HIGH);

  delayMicroseconds(10); 
  digitalWrite(trigPin3, LOW);
  distance = pulseIn(echoPin, HIGH);  
  distance1 = pulseIn(echoPin1,HIGH);
  distance2 = pulseIn(echoPin2,HIGH);
  distance3 = pulseIn(echoPin3,HIGH);
    
  if (distance >= 200 || distance <= 0){
    Serial.println("Out of range");                 // running the condition for the LEDs
  led.off();
  }
  else {
    Serial.print(distance);
    Serial.println(" cm");
   led.on(); 
  
  }
   
  if (distance1 >= 200 || distance1 <= 0){
    Serial.println("Out of range");
    led1.off();
  }
  else {
    Serial.print(distance1);
    Serial.println(" cm");
    led1.on();

  }
 
  if (distance3 >= 200 || distance3 <= 0){
    Serial.println("Out of range");
  led3.off();
  }
  else {
    Serial.print(distance3);
    Serial.println(" cm");
    led3.on();
  
  }
  
  if (distance2 >= 200 || distance2 <= 0){
    Serial.println("Out of range");
  led2.off();
  }
  else {
    Serial.print(distance2);
    Serial.println(" cm");
    led2.on();
  
  }
}