Tuesday, August 4, 2009

Small LED dot matrix development board

I was very busy for the past two months so this blog just didn't move. As you may know, the LED dot matrix display is my favorite device. I have designed a small development board for testing my led dot matrix related programs.
The schematic is as the following:
LED dot matrix development board Schematic

The PCB is single sided so I can make it at home. Most of the components are SMD to keep small footprint of the board. The PCB size: 58.4mm x 46mm
LED dot matrix development board PCB

Acutally, I made a PCB and installed all components but the board didn't work :p. It was working when I tested the schematic on breadboard (with through hole version of PIC16F887). I think the SMD PIC16F887 may be broken or the PCB is bad but I just don't have time to figure out the problem. I will try new PCB and PIC16F887.
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3 comments:

  1. UnknownOctober 15, 2009 at 3:27 AM

    sir..
    can u help me to design digital chess clock using PIC microcontroller?
    do emel me for any feedback...
    kapitau0inc@yahoo.com
    hope u can help me..
    10q..

    ReplyDelete
  2. EstudianteOctober 19, 2009 at 2:25 AM

    your blog is soo good! Thaks for everything!!!

    ReplyDelete
  3. UnknownMay 22, 2010 at 10:30 PM

    Nice, I've made a similar project, a small scrolling led sign.

    I've used an at89c2051, 4017+transistor dmux

    Visit "http://www.eercz.com"

    ReplyDelete