Friday, September 17, 2010

Word Clock Update #3 9/5: Schematic Design

I have completed the schematic design and also I have layed out the board.
I will have the PCBs made at Silver Circuits (custompcb.com). 
I found that the cost per PCB square inch with shipping is low with small volume, and they are very nice to work with.  Also, they take regular Gerber files from what ever Layout software you use...Some other sites you must use their specific PCB layout software with their limitations...I did not like that so much.


As you can see in the schematic, the GPIO from the micro (S08GT8) are each going to the inputs of the ULN2003A.  And then from the ULN2003A  out puts to the LEDs.  The LEDs are not shown in the schematic, since I will have a connector there.   

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