[Noisebridge-discuss] Anyone have a Darlington Transistor Array?

Henner Zeller h.zeller at acm.org
Mon Oct 21 06:59:55 UTC 2013

[ bcc noisebridge-discuss]

I have three ULN 2003a lying around (at home, Soma - write me if can pick
it up within the next 30min).

On 20 October 2013 23:48, Tyler Freeman <artist at odbol.com> wrote:

> Hi!
> I'm trying to output hex digits to a 7-segment LED, but it turns out the
> BCD decoder driver I was using doesn't do letters A-F. There was a nice old
> chip called the DM9368 that could do hexadecimal letters, but it was
> discontinued for some reason.
> So now I'm going to just do it without a decoder, using a darlington
> transistor array like this one: http://www.ti.com/lit/ds/**
> symlink/uln2803a.pdf <http://www.ti.com/lit/ds/symlink/uln2803a.pdf>
> The thing is, this is kind of an emergency last minute change so I don't
> have time to order one... does anyone have a ULN2803 or similar lying
> around that I could borrow and test with my circuit? Or know of another way
> to do letters on a 7-segment LED? Any help would be appreciated!
> -Tyler
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