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Re: [N8VEM-S100:5002] FPMini Status Update

Jeff — since only two poles of the SPDT switch are used, there is an orientation issue — ON (which is the bat handle UP for the address and data switches) connects the center and “bottom” terminals. As Don points out, the component library probably has two versions of the switch with different pin numbering, thus having the effect of reversing what I just said. Using the wrong footprint results in ON with the bat handle DOWN.

Rich

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Rich Cini
Collector of Classic Computers
Build Master and lead engineer, Altair32 Emulator

From: Don Caprio <cap...@uxpro.com>
Reply-To: S100-Post <n8vem...@googlegroups.com>
Date: Friday, August 22, 2014 at 3:00 PM
To: S100-Post <n8vem...@googlegroups.com>
Subject: Re: [N8VEM-S100:5002] FPMini Status Update

I'm not sure what happen with the foot print issue. First prototype was fine, the second
one had the foot print problem. Wasn't so much a foot print issue. The switch function
was opposite what the silkscreen indicated. The first board was done on my laptop which
had to be rebuilt due to hard drive crash. I'm guessing Kicad picked up a different lib
in it's path.



On Fri, Aug 22, 2014 at 11:37 AM, Jeff Galinat <jgal...@optonline.net> wrote:
Hi Don,
 Thank you for all your hard work on this.  I don't want to be too negative here but since it sounds like major re-routing is being done is a another prototype going to be ordered to ensure no other errors are being introduced in the final product?  Also I am confused as to what the problem was with the switch placement on this design.  It looks like the switches are symmetrical top to bottom so I don't see how they could be "upside down".
Regards,
Jeff


On 8/19/2014 1:08 PM, Don Caprio wrote:
I had to reroute the board and the autorouter is giving me fits.

Completed once after a week but couldn't save session file. The checkpoint
file I saved hangs after a few hours so I'm forced to start from scratch.

Sorry for the delay.


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Don Caprio cap...@uxpro.com
http://www.uxpro.com
(925) 240-UNIX

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