Code for Smart Hand Wash project

Refer this code which is used to built smart hand wash project and is based on C language. The code is simple and small.

CODE

#include <Servo.h>                 //servo library
Servo servo;     
int trigPin = 5;   
int echoPin = 6;   
int servoPin = 7;
int led= 10;
long duration, dist, average;   
long aver[3];                             //array for average

void setup()

{       

    Serial.begin(9600);
    servo.attach(servoPin); 
    pinMode(trigPin, OUTPUT); 
    pinMode(echoPin, INPUT); 
    servo.write(0);                     //close cap on power on
    delay(100);
    servo.detach();
}

void measure()

{       

digitalWrite(10,HIGH);
          digitalWrite(trigPin, LOW);
          delayMicroseconds(5);
          digitalWrite(trigPin, HIGH);
         delayMicroseconds(15);
         digitalWrite(trigPin, LOW);
         pinMode(echoPin, INPUT);
         duration = pulseIn(echoPin, HIGH);
         dist = (duration/2) / 29.1;    //obtain distance
}
void loop()

{       
          for (int i=0;i<=2;i++)     //average distance

 {   
         measure();               
         aver[i]=dist;           
        delay(10);              //delay between measurements
  }

 dist=(aver[0]+aver[1]+aver[2])/3;   

 if ( dist<50 )          //Change distance as per your need
 {

       servo.attach(servoPin);
       delay(1);
       servo.write(0); 
       delay(3000);       
       servo.write(150);   
      delay(1000);
      servo.detach();     
}
Serial.print(dist);
}