7×5 LED Matrix Using Arduino

By Jacob Abraham and Allen Mathew

23836
 

Software

4
Fig. 4: Proposed LED matrix arrangement (3D visualisation in Proteus 8)

Software code for Arduino Uno is written in Arduino programming language and compiled using Arduino IDE. The file name is led_matrix_7x5_efy.ino, compiled in Arduino IDE. The program can be downloaded from end of the article and the algorithm is described in the program using comments. The program is uploaded to Arduino Uno by clicking Upload in Arduino IDE. Select the correct board and COM port before uploading the code.

Construction and testing of Arduino LED Project

An actual-size, single-side PCB of the 7×5 LED matrix parts list11is shown in Fig. 2 and its component layout in Fig. 3. Proposed LED matrix arrangement is shown in Fig. 4.

Mount the components as shown in the PCB layout. Then, install Arduino IDE in your computer. Open the program and upload it to Arduino board. The LEDs should start glowing.

To test the LED matrix board, check and ensure each LED is in its respective row and column.

For initial testing of Arduino board, upload a simple program like Blink from the example sketches in Arduino IDE.

Download PCB and Component Layout PDFs: CLICK HERE

Download Source code: CLICK HERE


Jacob Abraham  and Allen Mathew are electronics enthusiasts from Amal Jyothi College of Engineering, Kottayam

 

2 COMMENTS

  1. Thanks for sharing,but one thing when I tried to run the codes.
    For example,when just run the following codes,actually the whole matric would be on,right?
    void L_E()
    {

    ledon(0,0);delay(1);
    ledon(1,0);delay(1);
    ledon(2,0);delay(1);
    ledon(3,0);delay(1);
    ledon(4,0);delay(1);
    ledon(5,0);delay(1);
    ledon(6,0);delay(1);
    ledon(0,1);delay(1);
    ledon(0,2);delay(1);
    ledon(0,3);delay(1);
    ledon(0,4);delay(1);

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