Introduction: Arduino-Powered Touch-Free Trash Can
I created an Arduino-powered smart trash can for a hygienic solution. The lid opens automatically using a sensor, eliminating the need for physical contact. This not only adds convenience but also promotes cleanliness by reducing the spread of germs and ensuring a touch-free disposal experience. Follow the straightforward steps to assemble your own hands-free and hygienic trash can. I aim to simplify this instructable, ensuring that it's accessible to everyone. My goal is to make it easy for anyone to understand and build their own project.
Supplies
Supplies :
- Arduino board (e.g., Arduino Uno)
- Ultrasonic distance sensor (HC-SR04)
- Servo motor
- Trash can with a lid
- Jumper wires
- Power source for Arduino (USB cable or battery pack)
Step 1: Upload the Arduino Code
First, install the Arduino servo library and then Connect your Arduino board to your computer and Upload the code below
#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);
}
Step 2: Assemble the Circuit Using Tinkercad
Ultrasonic Sensor:
- Connect VCC to Arduino's 5V.
- Connect GND to Arduino's GND.
- Connect Trig to Digital Pin 5.
- Connect Echo to Digital Pin 6.
Servo Motor:
- Connect the Yellow Pin to the Digital Pin 7.
- Connect Black to Arduino's GND.
- Connect Red to Arduino's 5V.
Power Supply:
- Connect Battery: Positive terminal to Arduino's 5V.
- Negative terminal to Arduino's GND.
Use the Circuit above I made in Tinkercad as a Guide
Step 3: Build the Smart Trash Can
Utilize the tutorial video on my channel for step-by-step guidance in assembling the trash can. It will make the process even more straightforward.
Step 4: Run the Trash Can
Congratulations on completing your auto trash can! You've just taken a step towards minimizing the spread of germs in your household.
Participated in the
Robotics Contest