Smart Dustbin using Arduino and Ultrasonic Sensor

Project Used Hardware

• Arduino UNO,
• Jumper Wires,
• Servo Motor,
• Ultrasonic Sensor

circuit diagram shown below 

SOFTWARE PROGRAM :

#include <Servo.h>   //servo library

Servo sg90;  

int echo = 7;   

int trig = 6;    

int servopin = 8;

int distance;

int duration;

void setup() {       

    sg90.attach(8);

    pinMode(trig, OUTPUT);  

    pinMode(echo, INPUT);  

  

} 

void loop() {

  digitalWrite(trig,0);

  delay(2);

  digitalWrite(trig,1);

  delayMicroseconds(10);

  digitalWrite(trig,0); 

  duration = pulseIn(echo,1);

  distance = duration*0.034/2;

  

if ( distance<30 ) {   

 sg90.write(0);    

 delay(4500);

 Serial.print(distance);

}

 else{

  sg90.write(180);

  delay(50);

 }

}