Building An IoT Based Smart Trash Can

Introduction

 

In this article, I will explain the concept of an IoT based smart trash can.  It will automatically open when we take waste to it; and when it is full, a light will come on automatically. 

Parts Of List

Hardware Parts 

• Arduino Uno
• UltraSonic Sensor-2
• Servo motor
• LED
• Buzzer
• Bread Board
• HookUp wires.

Software Parts

• Arduino IDE.

Parts Explanation

UltraSonic Sensor

• It is used to produce a high frequency sound effect.
• It can measure the signal from the sender to the receiver.
• The echo is to be determined from the object.

Figure1 UltraSonic Sensor. 

ServoMotor

• It is small and cost effective.
• It is used for small robotics and radio controls.

Figure 2 ServoMotor

Buzzer

•  A buzzer is a sound maker which which can alert you to a problem
• Then in the buzzer which can have the gnd and vcc

Figure 2 Buzzer 

Connection

Step 1 UltraSonic Sensor-1 to Arduino

• Connect the Vcc of the Ultrasonic Sensor to the 5v of the Arduino Uno.
• Connect the Gnd of the Ultrasonic Sensor to the Gnd of the Arduino Uno.
• Connect the First Trigger of the Ultrasonic Sensor to the 5 of the digital Input in the Arduino Uno.
• Connect the First Echo of the Ultrasonic Sensor to the 4 of the digital Input in the Arduino Uno.

Step 2 UltraSonic Sensor-2 to Arduino

• Connect the Vcc of the Ultrasonic Sensor to the 5v of the Arduino Uno.
• Connect the Gnd of the Ultrasonic Sensor to the Gnd of the Arduino Uno.
• Connect the First Trigger of the Ultrasonic Sensor to the 7 of the digital Input in the Arduino Uno.
• Connect the First Echo of the Ultrasonic Sensor to the 6 of the digital Input in the Arduino Uno.

Step 3 Servo Motor To Arduino

• Connect the Vcc of the ServoMotor to the 5v of the Arduino Uno and also connect the vcc in the 8th pin of the Arduino.
• Connect the Gnd of the ServoMotor to the Gnd of the Arduino Uno. 

Step 4 Buzzer To Arduino

• Connect the Vin of the buzzer to the 2 of the Arduino Uno.
• Connect the Gnd of the buzzer to the Gnd of the Arduino Uno.

Step 5 Led To Arduino

• Connect the Led1 to Negative pin to the Arduino Uno
• Connect the Led1 to postive pin 8 to the Arduino Uno
• Connect the Led2 to Negative pin to the Arduino Uno
• Connect the Led2 to postive pin 9 to the Arduino Uno
• Connect the Led3 to Negative pin to the Arduino Uno
• Connect the Led3 to postive pin 10 to the Arduino Uno
• Connect the Led4 to Negative pin to the Arduino Uno
• Connect the Led4 to postive pin 11 to the Arduino Uno

Figure Of the Connection

 

Figure 4 Connection 

Programming

#define pingTrig2 7
#define pingEcho2 6
#define pingTrig 5
#define pingEcho4
#define buzzer 2
#include < Servo.h >
Servo myservo()
void setup() {
    Serial.begin(9600);
    PinMode[PingTrig2, OUTPUT];
    PinMode[PingEcho2, OUTPUT];
    PinMode(8, OUTPUT);
    PinMode(9, OUTPUT);
    PinMode(10, OUTPUT);
    PinMode(11, OUTPUT);
    PinMode(Buzzer, OUTPUT);
    PinMode(pingTrig, OUTPUT);
    PinMode(pingEcho, OUTPUT);
    myservo, attach(3);
}
Void Loop() {
        lond duration2 distance2;
        digitalWrite(pingTrig2.LOW);
        delay Microsecconds(2);
        digitalWrite(pingTrig2.HIGH);
        delay Microsecconds(10);
        digitalWrite(pingTrig2.LOW);
        digitalWrite(buzzer, LOW);
        duration2 = PulseIn(pingEcho2, HIGH);
        distance2 = duration 2 / 20 / 2;
        if (distance 2 > 15) {
            open close();
        } else {
            mysowo,
            write(0)
            lighting();
            digitalwrite(buzzer, low)
        }
        void openclose() {
                long during, inches, cn;
                digitalwrite(pingTrig, LOW);
                delay Microseconds(02);
                digitalwrite(pingTrig, HIGH);
                delay Microseconds(10);
                digitalwrite(pingTrig, Low);
                duration = pulseIn(pingEcho, High);
                cn = duration / 29 / 2;
                if (cn < 10) {
                    myservo.write(50);
                    delay(100);
                } else {
                    myservo.write(0);
                }
                delay(1000);
                void lighting() {
                    digitalWrite(buzzer, HIGH);
                    digitalWrite(8, HIGH);
                    digitalWrite(9, HIGH);
                    delay(300);
                    digitalWrite(8, LOW);
                    digitalWrite(9, LOW);
                    digitalWrite(10, High);
                    digitalWrite(11, High);
                    delay(300);
                    digitalWrite(10, Low);
                    digitalWrite(11, Low);
                    delay(300);
               }

Explanation

• It will sense when we want to put waste in the can and when the can is full a light will come on. 

Output

 

Figure 5 Output 1 


Figure 6 Output 2