Score Board Project With P10 LED Display Using DMD

Often we meet in a soccer stadium; there is a giant LED board that serves as a scoreboard. So also in other sports field, also often we know the scoreboard of the display screen made of LED. Although not possible, there is also a field that still uses a manual board.

In this project, we create a scoreboard using Dot-matrix Display using Bluetooth-based Android Smartphone as the controller.

Step 1: Materials You Need

You will need:

Arduino Uno
SFE DMD Connector
P10 Outdoor/ Semi Outdoor
HC-05 Bluetooth Module
Power Supply 5 Volt
Tact Switch
Bread Board
Jumper Wires

Step 2: Wiring

Once the components have been collected, connect each component according to the schematic above.

Step 3: Code

After each component is connected, make sure that the component is properly installed before turning it on. Also attach the DMD connector according to the pin shown on the PCB. Connect Arduino on your PC / Laptop, and upload the program below.

// Insert File library
#include <DMD2.h>
#include <fonts/MyBigFont.h>
#include <EEPROM.h>

// Defining function
#define bCLEAR A1
#define bRIGHT A2
#define bLEFT A0
#define Panjang 2                         // Number of height of Display P10
#define Lebar 1                           // Number of width of Display P10

SoftDMD dmd(Panjang, Lebar);  
// Declaration Variable
byte Brightness;
byte debounce = 100;
int rightScore = 0;
int leftScore = 0;
int i;
char dmdBuff[10];
char BT;
// Setup function, done once arduino reset
void setup() {
  Brightness = EEPROM.read(0);
  dmd.setBrightness(10);
  dmd.selectFont(MyBigFont);
  dmd.begin();
  dmd.clearScreen();
  Serial.begin(9600);
  pinMode(bCLEAR,INPUT_PULLUP);
  pinMode(bRIGHT,INPUT_PULLUP);
  pinMode(bLEFT,INPUT_PULLUP);

  blinkDisplay();
}
// Blink Display Function, make the display blink
void blinkDisplay(){
  dmd.clearScreen();
  delay(300);
  sprintf(dmdBuff,"%d",leftScore);
  dmd.drawString( 0, 0, dmdBuff );
  dmd.drawString( 29, 0, "-" );
  sprintf(dmdBuff,"%2d",rightScore);
  dmd.drawString( 43, 0, dmdBuff );
  delay(300);
  dmd.clearScreen();
  delay(300);
  sprintf(dmdBuff,"%d",leftScore);
  dmd.drawString( 0, 0, dmdBuff );
  dmd.drawString( 29, 0, "-" );
  sprintf(dmdBuff,"%2d",rightScore);
  dmd.drawString( 43, 0, dmdBuff );
  delay(300);
  dmd.clearScreen();
  delay(300);  
}
//GOAL Function, display GOAL text when input inserted
void GOAL(){
  dmd.clearScreen();
  delay(400);
  dmd.drawString(5, 0, "GOAL!!!" );
  delay(400);
  dmd.clearScreen();
  delay(400);
  dmd.drawString(5, 0, "GOAL!!!");
  delay(3000);
}
// Loop Function, done repeatedly
void loop() {
  if(Serial.available()){
    BT = Serial.read();
  }
  if(digitalRead(bCLEAR) == LOW || BT == 'X') {
    delay(debounce); 
    leftScore = 0; 
    rightScore = 0;
    dmd.clearScreen();
    BT = 0;
  }
  
  if(digitalRead(bLEFT) == LOW || BT == 'A') {
    delay(debounce);
    leftScore++;
    GOAL();
    blinkDisplay();
    BT = 0;
  }
      
  if(digitalRead(bRIGHT) == LOW || BT == 'B') {
    delay(debounce); 
    rightScore++;
    GOAL();
    blinkDisplay();
    BT = 0;
  }

  
  sprintf(dmdBuff,"%d",leftScore);
  dmd.drawString( 0, 0, dmdBuff );
  dmd.drawString( 29, 0, "-" );
  sprintf(dmdBuff,"%2d",rightScore);
  dmd.drawString( 43, 0, dmdBuff );
  delay(300);
  
  if(digitalRead(bLEFT) == LOW && digitalRead(bRIGHT) == LOW) {
    dmd.clearScreen();
    delay(debounce);
    setBrightness:
    Brightness = EEPROM.read(0);
    if(digitalRead(bLEFT) == LOW ){delay(debounce); Brightness++;}
    if(digitalRead(bRIGHT) == LOW){delay(debounce); Brightness--;}
 
    EEPROM.write(0,Brightness);   
    dmd.setBrightness(Brightness);
    sprintf(dmdBuff,"%3d ",Brightness);
    dmd.drawString( 16, 0, dmdBuff );
    delay(50);

    if(digitalRead(bCLEAR) == 0){dmd.clearScreen(); delay(debounce); loop();}
    else{goto setBrightness;}
  }
}

Step 4: Application

If an error occurs while uploading the program, you need an existing DMD library of additional fonts to support the display of the scoreboard, download DMD2 libraries. The image above is the Scoreboard display.

Step 5: Android Application

SFE Scoreboard android apps can be downloaded here. Here's the main view of the SFE Score Board app.

How to use it, as follows:

Install the application on your Android Smartphone.
Open the app, if there is a notification to activate bluetooth click yes.
To connect to the bluetooth module, click the Bluetooth icon at the top of the application, it will display a bluetooth list that has been terpairing with your device.
But if the name of your bluetooth module is not available on the device, you must make pairing first by entering the bluetooth settings menu on your device. After the scanning process is complete and appear the name of your bluetooth module, do pairing. If prompted to enter a password, enter password 1234 for the module standard, if it has not been replaced.
If the application is connected, you can already access the scoreboard using your Android device.