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);

}