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PIC18F2550 USB LED Matrix Board

NOTE: Please add yourself to our new maling-list. In there you will get exclusive information about this project, beta-testing, pre-releases and much more – http://elec.tkjweb.dk/matrix/

In March is designed a USB LED Matrix board which I afterwards got manufactured at BatchPCB.

USB Led Dot Matrix - Revision 1

After about a month I recieved the board, but unfortunately it had some manufacturing defects. I contacted BatchPCB and got a full refund.
You can read more about the defects in one of my other posts. But now I’ve fixed the defects using a razor blade and some wire.

The board and components used

Here is some assembly pictures…

Assembly step 1

Assembly step 2

Assembly step 3

Assembly step 4

Assembly step 5

Assembly step 6 - Finished

After a couple of hours programming I’m able to control the display using a nice GUI on the computer (made in Visual Basic 6). The programming is done in PicBasic Pro, and the flashing of the PIC18F2550 is easily done via USB, as I’ve installed Microchip’s PICDEM FS USB Bootloader on the chip.

Board connected to computer

LED Matrix example

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  1. August 1st, 2010 at 13:42 | #1


    I’m searching for the eagle library of this matrix. i tried to make one but got bad.
    so. if you could say where you you get or put in the site for download I will be very glad.


  2. September 1st, 2010 at 10:44 | #2

    @Raul Zanardo
    Hi Raul.
    I made a library myself with different parts used on this board.
    The LED Matrix is one of the parts made from scratch!


  3. ttun
    August 30th, 2011 at 13:19 | #3

    i want complete project

  4. August 30th, 2011 at 14:32 | #4

    Hi TTUn.
    You wan’t to buy the kit? Let us know if you are interested at mail@tkjelectronics.dk


  5. June 18th, 2012 at 09:52 | #5


    i am really interesting about led matrix displays. i really like to make this circuit myself. so, pls. be kind enough to give me the hex codes.

    i am fro. sri lanka

    with kind rgds
    many tnks,


  6. June 25th, 2012 at 18:57 | #6

    Dear Indika.
    Please contact us at mail@tkjelectronics.dk and I will get back to you with the files.

    Best Regards
    Thomas Jespersen

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