Serial driver for 7-Segment Red 6.5" Display

Archive New Product Ideas
1

I need to drive the big SF 7-segment LED displays (http://www.sparkfun.com/commerce/produc … ts_id=8530) and think a little serial interface board would be useful that is easy to connect to the bottom. My go at a schematic and layout are linked below. Basically it’s just a 595 with series LEDs and connectors.

I have 7 of them so I’ll at buy at least that quantity.

http://dl.dropbox.com/u/843009/large-7-seg-serial.png

http://dl.dropbox.com/u/843009/large-7-seg.sch

http://dl.dropbox.com/u/843009/large-7-seg.brd

2

The HC595 can’t handle 12v. You can use a tpic6b595 instead, or use the '595 followed by a ULN2803.

/mike

3

This will do what you want

http://www.sparkfun.com/commerce/produc … ts_id=9463