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<DIV><FONT size=2 face=Arial>I was going to suggest some strangeness with
the clamp diodes, my dealings with the ULNXX IC's they can do some strange
things with out pull up/down and unloaded. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>It is a sad day for me. I made what
was possibly the last trip to my favorite junkyard (actually the only
dig away and load up junkyard round these parts). They started clearing it out
several months ago after the old man died, I went to pillage my favorite junk
pile today and it was gone. Did latch on to some things Ive been pondering not
quite sure if its what I want/need and some other random bits because they may
be gone shortly. Seems like all the old junk men are slowly dying off and the
junkyards along with them.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Austin</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=perra.e@gmail.com href="mailto:perra.e@gmail.com">Per Eriksson</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=simpits-tech@simpits.org
href="mailto:simpits-tech@simpits.org">Simulator Cockpit Builder's List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, August 25, 2010 2:28
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [simpits-tech] Whats
happenin?</DIV>
<DIV><BR></DIV>
<DIV class=gmail_quote>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><BR>Right now I'm chasing a damn weird oddity with my
Gazoutta16 board.<BR>Turning channel 8 on activates channels 1-7 as well.
The weird thing is,<BR>my logic probe tells me that only the 8th input
on the ULN2803 has gone<BR>high. The only thing I have left to test is
the ribbon cable. This is<BR>weird because it happens to both the
prototype and one of the production<BR>boards. I've checked it with a
multi-meter and there's no errors on the<BR>board. It's enough to
drive me even crazier. :)</BLOCKQUOTE>
<DIV><BR></DIV>
<DIV>Butting in: Did you accidentally connect the flyback diodes pin to
the 8th output? That would behave that way, sort of. Of course, you'd have had
to leave that pin unconnected in the design, or at least not connected to the
power supply positive.</DIV>
<DIV><BR></DIV>
<DIV>Just a quick thought...</DIV></DIV>
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