Digital Object Counter Using Arduino || DIY || TexoBot

The sensor used in our project has a range of 3-80cm

Now Generate the Gerber file. This file can be used to place order your preferred PCB manufacturing websites to order your PCB

Download Gerber File

Thank you for your interest in our "Digital Object Counter Using Arduino" project.

You can purchase the Gerber file via PayPal. After completing your purchase, you will be directed to the download page. If you encounter any issues, please contact us at enquiry@texobot.net, and we will respond as quickly as possible.

If it is your first order from JLCPCB you can get up to 5 PCBs for only $2.

Please solder below components on respective labeling. 

C1----0.1 uf capacitor

C2----0.1 uf capacitor

C3----0.1 uf capacitor

R1----Resistor 10KΩ 

R2----Resistor 10KΩ 

R3----Resistor 10KΩ 

R4----NA

R5----Resistor 220Ω 

R29----Resistor 10KΩ 

R30----Resistor 560Ω 

R31----Resistor 1KΩ 

T6----BC547 Transistor

So now we have completed the soldering process.

Please contact us if you would like to have the Gerber file that we have used in this project.

Upload the Sketch to Arduino

Now we can upload the sketch to our Arduino. Connect Arduino to your computer using the USB cable and upload the code shown below.

I have added comments in the program for better understanding of each codes.

int Count_limit = 0; // declare count limit variable to zero

int IR_Sensor_INPUT = A0; //E18*D80NK IR Infrared Sensor input pin to Arduino pin A0

long int counter = 0; // Set counter variable to 0

int hitObject = false;

int Buzzer = 9; // Positive pin of Buzzer to Arduino pin 9

int Set_Reset_Button = A1; // Button to reset the count value to Arduino pin A1

int UP_button = A2; // Button to count up to Arduino pin A2

int Down_button = A3; // Button to count Down to Arduino pin A3

int Set_Reset_Button_State= 1; 

int Up_Button_State = 1;

int Down_Button_State = 0;

int LED = 8; // Amnode pin of the LED to Arduino pin 8

#include "LedControl.h" // include the Led display library:

LedControl lc=LedControl(11,13,10,1);// initialize the library with the numbers of the interface pins

#include <LiquidCrystal.h> // include the Liquid Cristal library:

LiquidCrystal lcd(7, 6, 5, 4, 3, 2); // initialize the library with the numbers of the interface pins

#include <EEPROM.h> // include the EEPROM library to store last count even after power loose

int addr = 0; //Set EEPROM Address to zero

void setup() {

  pinMode(Set_Reset_Button, INPUT); // SET PUSH Button as input

  pinMode(UP_button, INPUT); // UP PUSH Button as input

  pinMode(Down_button, INPUT); //DOWN PUSH Button as input

  pinMode(Buzzer, OUTPUT); // Buzzer as output

  pinMode(LED, OUTPUT); // LED as output

  lc.shutdown(0,false);

  lc.setIntensity(0,8);

  lc.clearDisplay(0);

  Serial.begin(9600);

  pinMode(IR_Sensor_INPUT,INPUT_PULLUP);  // IR sensor as INPUT(Used inbuilt pullup resister using program)

  lcd.begin(16, 4); // set up the LCD's number of 16 columns and 4 rows:

  // ###Print follwing details to the LCD at the start###//

  lcd.print("****************");

  lcd.setCursor(0,1);

  lcd.print("*Object Counter*");

  lcd.setCursor(0,2);

  lcd.print("*              *");

  lcd.setCursor(0,3);

  lcd.print("****************");

  //Trun on Buzzer and off after 200ms delay//

 digitalWrite(Buzzer, HIGH);

  delay(200);

  digitalWrite(Buzzer, LOW);

  delay(1000);

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("last count was:");

  lcd.setCursor(0,1);

  lcd.print(EEPROM.read(addr));// show the previous count

  delay(2000);

set_count_limit(); //cal set_count function

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("Object Count:");

  lcd.setCursor(0,1);

  lcd.print(counter); // show counter value

  led_display();

}

void loop() {

  counter_(); // call counter

  counter = 0;

  led_display();

  digitalWrite(Buzzer, LOW);

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("last count was:");

  lcd.setCursor(0,1);

  lcd.print(EEPROM.read(addr));

  delay(2000);

  Set_Reset_Button_State = HIGH;

  set_count_limit();

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("Object Count:");

  lcd.setCursor(0,1);

  lcd.print(counter);

  led_display();

//  lcd.clear();

//  lcd.setCursor(0,0);

//  lcd.print("Object Count:");

//  lcd.setCursor(0,1);

//  lcd.print(counter);

}

void counter_(){

while(1){

      lcd.setCursor(0,3);

      lcd.print("SET          RST");

      Set_Reset_Button_State= digitalRead(Set_Reset_Button); // read the reset button sate(LOW or HIGH)

      Down_Button_State = digitalRead(Down_button); // read the DOWN button sate(LOW or HIGH)

   Up_Button_State = digitalRead(UP_button); // read the UP button sate(LOW or HIGH)

      if(Set_Reset_Button_State== HIGH){ // This if loop will be executed if the SET button is HIGH

        lcd.setCursor(0,1);

     int val = digitalRead(IR_Sensor_INPUT); // read the IR_Sensor

     if( (val == 0) && (hitObject == false) ){ // this code will execute when object in range

       counter++;

       hitObject = true;

          EEPROM.write(addr, counter); // store the count value in EEPROM

          Serial.print("Counter = ");

          lcd.print(counter);

          led_display();

       if(counter == Count_limit){ // this loop will be executed once the count reach the count limit

         digitalWrite(Buzzer, HIGH); // buzzer ON  30 sec

            lcd.setCursor(0,2);

            lcd.print("Cnt Lmt Reached!");

            lcd.setCursor(0,3);

            lcd.print("             RST");

           for (int i =0; i<150; i++){ // LED will blink for 30 sec

                Set_Reset_Button_State= digitalRead(Set_Reset_Button); // read the reset button sate(LOW or HIGH)

             if (Set_Reset_Button_State== LOW){ //this loop will be executed if the SET button is LOW else stay count limit reached

                  Set_Reset_Button_State = HIGH;

                 return;

             }else{

                  digitalWrite(LED,HIGH);

                  delay(100);

              digitalWrite(LED,LOW);

                  delay(100);

             }

           }

              delay(30000);

              digitalWrite(Buzzer, LOW);

              lcd.setCursor(0,2);

              lcd.print("            ");

              lcd.setCursor(0,3);

              lcd.print("             RST");

       }

       else{

            digitalWrite(Buzzer, HIGH);

         delay(20);

            digitalWrite(Buzzer, LOW);

            lcd.setCursor(0,2);

       }

     }

     else if( (val ==1) && (hitObject == true) ){ // this code will execute when object is not in range

       hitObject = false;

     }

   }

   else if (Set_Reset_Button_State== LOW){ // this code will execute when reset button pressed

     counter = 0;

        digitalWrite(Buzzer, HIGH);

     delay(200);

        digitalWrite(Buzzer, LOW);

     lcd.clear();

        lcd.setCursor(0,0);

        lcd.print("Object Count:");

        lcd.setCursor(0,1);

        lcd.print(counter);

     led_display();

   }

      if(Down_Button_State == LOW){ // Count set loop will be executed once down button is pressed.

     digitalWrite(Buzzer, HIGH);

     delay(70);

        digitalWrite(Buzzer, LOW);

     lcd.clear();

        lcd.setCursor(0,0);

        lcd.print("last count was:");

        lcd.setCursor(0,1);

        lcd.print(EEPROM.read(addr));

     delay(800);

        set_count_limit();     // call set count limit

     lcd.clear();

        lcd.setCursor(0,0);

        lcd.print("Object Count:");

        lcd.setCursor(0,1);

     counter = 0;

        lcd.print(counter);

     led_display();

   }

  }

}

int set_count_limit()  //defined the count limit set function here.

{

  counter=0;

  led_display();

  while (Set_Reset_Button_State == HIGH)

{

Set_Reset_Button_State= digitalRead(Set_Reset_Button);

Up_Button_State = digitalRead(UP_button);

Down_Button_State = digitalRead(Down_button);

lcd.clear();

lcd.setCursor(0,0);

lcd.print("SET THE COUNT!");

lcd.setCursor(0,1);

lcd.print("Count Limit:");

lcd.setCursor(0,2);

lcd.print(Count_limit);

lcd.setCursor(0,3);

lcd.print("DOWN   UP   SET");

delay(50);

if (Up_Button_State == LOW) //Increase the count Limit

{

  Count_limit++;

  lcd.setCursor(0,2);

  lcd.print(Count_limit);

  digitalWrite(Buzzer, HIGH);

  delay(70);

  digitalWrite(Buzzer, LOW);

  }

else if(Down_Button_State == LOW) //Decrese the count Limit

{ if (Count_limit > 0)

{

  Count_limit--;

  lcd.setCursor(0,2);

  lcd.print(Count_limit);

  digitalWrite(Buzzer, HIGH);

  delay(70);

  digitalWrite(Buzzer, LOW);

}

  }

}

  digitalWrite(Buzzer, HIGH);

  delay(70);

  digitalWrite(Buzzer, LOW);

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("Count Limit Set:");

  if(Count_limit==0){  // if the count limit is zero then the counter set infinite limit

    lcd.print("infinity");

  }else{

    lcd.setCursor(0,1);

    lcd.print(Count_limit);

  }

  delay(3000);

  }

  void led_display(){  // led display function

  int digit[8]={0,0,0,0,0,0,0,0};

//  lc.clearDisplay(0);

  long int temp=counter;

        Serial.println( counter);

  int j=0,i=0;

  for(i=0;temp>0 && i<8;i++ ,temp=temp/10)digit[i]=temp%10;

  for(;i<8;i++)digit[i]=0;

delay(1);

  }

Arduino Code for Conveyor Belt 

#include <Stepper.h>

const int stepsPerRevolution = 1000;  // change this to fit the number of steps per revolution

// for your motor

// initialize the stepper library on pins 2 through 5:

Stepper myStepper(stepsPerRevolution, 2, 3, 4, 5);

void setup() 

{

  // set the speed at 10 rpm:

  myStepper.setSpeed(10);

}

void loop() 

{

  Serial.println("clockwise");

  myStepper.step(stepsPerRevolution);

}

So, our project is working as per our design. We hope that you enjoyed the Project.

And we would like to thank you once again for reading this article.