<div dir="ltr"><div>[ bcc noisebridge-discuss]</div><div><br></div>I have three ULN 2003a lying around (at home, Soma - write me if can pick it up within the next 30min).</div><div class="gmail_extra"><br><br><div class="gmail_quote">
On 20 October 2013 23:48, Tyler Freeman <span dir="ltr"><<a href="mailto:artist@odbol.com" target="_blank">artist@odbol.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi!<br>
<br>
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.<br>
<br>
So now I'm going to just do it without a decoder, using a darlington transistor array like this one: <a href="http://www.ti.com/lit/ds/symlink/uln2803a.pdf" target="_blank">http://www.ti.com/lit/ds/<u></u>symlink/uln2803a.pdf</a><br>
<br>
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!<br>
<br>
-Tyler<br>
<br>
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