🏀 Arduino Mini Basketball Game – Goal Counter with IR Sensor, 7-Segment Display & I2C LCD

 

📌 Project Overview

This project is a Mini Basketball Game made with an Arduino board, IR sensor, 7-segment display, buzzer, and an I2C LCD.

• The IR sensor detects when the ball goes through the hoop.

• The 7-segment display shows the score (0–9 for 1 digit).

• The I2C LCD shows the game title and flashes “GOAL!” when a score is made.

• The buzzer plays a short beep sound whenever a goal is scored.

• The Arduino RESET button resets the game.

This is a fun project for kids, students, and hobbyists who want to learn Arduino in a playful way.

🎯 Components Required

• Arduino UNO (or compatible board)

• 1 × IR Sensor Module

• 1 × 7-Segment Display (Common Cathode, 1-digit)

• 1 × 16×2 LCD with I2C module

• 1 × Buzzer (active)

• Jumper wires

• Breadboard or PCB

🔌 Circuit Connections

IR Sensor

IR Sensor Pin	Arduino Pin
VCC	5V
GND	GND
OUT	D2

Buzzer

Buzzer Pin	Arduino Pin
+	D8
–	GND

7-Segment Display (1-digit, common cathode)

7Segment	Arduino Pin
a	D4
b	D5
c	D6
d	D7
e	D8
f	D9
g	D10
DP	Not used
Common Cathode	GND

I2C LCD (16×2)

LCD Pin	Arduino Pin
SDA	A4
SCL	A5
VCC	5V
GND	GND

📜 Arduino Code

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

#include <SevSeg.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); 

SevSeg sevseg;

const int irPin = 2;         

const int buzzerPin = 8;

int score = 0;

bool goalDetected = false;

void setup() {

  pinMode(irPin, INPUT);

  pinMode(buzzerPin, OUTPUT);

  

  lcd.backlight();

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("Seema HIZBULLAH");

  lcd.setCursor(0,1);

  lcd.print(".CC BASKET BALL");

  

  byte numDigits = 1;

  byte digitPins[] = {}; 

  byte segmentPins[] = {4,5,6,7,8,9,10}; 

  bool resistorsOnSegments = true;

  sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins, resistorsOnSegments);

  sevseg.setBrightness(90);

}

void loop() {

  // Detect goal with IR sensor

  if(digitalRead(irPin) == LOW){ // LOW when ball blocks IR

    if(!goalDetected){

      score++;

      if(score > 9) score = 9; // limit to 1-digit

      digitalWrite(buzzerPin, HIGH);

      lcd.setCursor(0,1);

      lcd.print("GOAL!          "); 

      delay(200);

      digitalWrite(buzzerPin, LOW);

      goalDetected = true; // prevent double count

    }

  } else {

    goalDetected = false;

    lcd.setCursor(0,1);

    lcd.print("                "); // clear line

  }

  // Show score on 7-segment

  sevseg.setNumber(score);

  sevseg.refreshDisplay();

  delay(50);

}

⚡ How It Works

1. The IR sensor detects the basketball when it passes through the hoop.

2. Each goal increases the score counter.

3. The 7-segment display shows the current score.

4. The LCD screen shows the game title and flashes “GOAL!” when a basket is made.

5. The buzzer plays a beep sound each time a score is made.

6. The Arduino reset button restarts the game and sets the score back to 0.