Smart Dustbin using arduino

Circuit Diagram

Code for  Arduino

 //Edison Media
//Thejus B Oommen
#include <Servo.h>
Servo servo;   
int trigPin = 5; 
int echoPin = 6; 
int servoPin = 7;
int led= 10;
long duration, dist, average; 
long aver[3]; 


void setup() {     
    Serial.begin(9600);
    servo.attach(servoPin);
    pinMode(trigPin, OUTPUT);
    pinMode(echoPin, INPUT);
    servo.write(0);     
    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; 
}
void loop() {
  for (int i=0;i<=2;i++) { 
    measure();             
   aver[i]=dist;         
    delay(10);           
  }
 dist=(aver[0]+aver[1]+aver[2])/3; 

if ( dist<50 ) {

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