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 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
The schematic is as the following:
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).
For more detail: Making your own Digital Clock using PIC16F887