This document describes an automatic trash can that opens when a person stands in front of it. The trash can uses an ultrasonic sensor and servo motor to detect a person and open the lid. An Arduino microcontroller controls the system. When a person is detected within 20cm, the servo motor opens the lid and a green LED turns on. Outside of 20cm, the lid closes and a red LED turns on. Components include an Arduino, ultrasonic sensor, servo motor, LEDs, buzzer and other basic electronic parts. Code is provided to control the system using distance measurements from the ultrasonic sensor.

1. By :
Haris Panca
Muhammad Efantama
Kenanga Ayu Nirmala

2. This idea we got when we pay attention
to our surroundings clean, some people less
lazy throw away trash in its place amongst other
things because, if we have to throw away trash
pressing or touching the dumpster, therefore we
have an idea to make project of the
instrumentation, entitled "Trash" that can open
and close automatically so that people will dump
need not be touching or tapping the dumpster.

3. To bring back the community will want to
dispose of the waste in place, some of the trash made
as attractive as possible so that the public are
interested to dump garbage at the venue. One of them,
namely the trash with an automated system where to
open the dumpster, users do not need to touch the
dumpster. Users only need to stand in front of the
Ultrasonic sensors on the front, then the bin will open
automatically. In addition the bin is equipped with LEDs
so that when the bin is open green light will turn on and
when the trash can close the light is red.

4. Solder
Sciccors
Cutter
Glue
Laptop
Ruler

5.  Arduino Uno
 Sensor Ultrasonik
 Servo TowerPro SG90
 Buzzer
 Resistor 220Ohm
 LED (Red and Blue)
 PCB
 Acrylic
 Cable (M to M, M to F, and F to F)
 Trash Bin

6. http://www.farnell.com/datasheets/1682209.pdf

7. http://www.micropik.com/PDF/SG90Servo.pdf

8. http://www.micropik.com/PDF/HCSR04.pdf

11. http://www.tek.com/sites/tek.com/file
s/media/media/resources/Cables2.p
df
• Male to Male
• Male to Female
• Female to Female

13. #include <Servo.h>
Servo myservo;
#define buzzer 3
int sound;
#define trigPin 11
#define echoPin 10
#define led 6
#define led2 4
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(buzzer, OUTPUT);
pinMode (led, OUTPUT);
pinMode(led2, OUTPUT);
myservo.attach(9);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/1) / 29.1;
if (distance >=0 && distance <= 20)
{
myservo.write(160);
tone(buzzer, 3000,150);
digitalWrite(led, LOW);
digitalWrite(led2, HIGH);
}
else if (distance > 20 || distance < 0){
myservo.write(0);
noTone(buzzer);
Serial.println("Jarak diluar jangkauan!");
digitalWrite(led, HIGH);
digitalWrite(led2, LOW);
}
else {
Serial.print(distance);
Serial.println(" cm");
}
delay(250);
}