<div dir="ltr">David, could you describe how you lay out PCBs in Excel? very curious :)<br><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 19, 2016 at 7:36 PM, David G Dixon <span dir="ltr"><<a href="mailto:dixon@mail.ubc.ca" target="_blank">dixon@mail.ubc.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Terry,<br>
<br>
I can rework the layout to accommodate more typical quad opamps such as<br>
TL074. This is actually very easy for me to do. I do it in Excel. With<br>
the graphic and the schematic from the article, I can reproduce the layout<br>
in Excel very quickly and then manipulate the layout to change the opamp<br>
pinouts. No problem.<br>
<br>
I could also add some sine shapers if required. I have a nice design for<br>
sine shapers which I could basically drop onto the board. It would get a<br>
tiny bit bigger, though.<br>
<span class="im HOEnZb"><br>
> -----Original Message-----<br>
> From: Synth-diy [mailto:<a href="mailto:synth-diy-bounces@dropmix.xs4all.nl">synth-diy-bounces@<wbr>dropmix.xs4all.nl</a>]<br>
> On Behalf Of KA4HJH<br>
</span><span class="im HOEnZb">> Sent: Wednesday, October 19, 2016 4:44 PM<br>
> To: sdiy<br>
> Subject: Re: [sdiy] PC board from artwork?<br>
><br>
><br>
</span><div class="HOEnZb"><div class="h5">> > On Oct 19, 2016, at 5:57 PM, Byron G. Jacquot<br>
> <<a href="mailto:thescum@surfree.com">thescum@surfree.com</a>> wrote:<br>
> ><br>
> > I'd be happy to redraw it in Eagle, and generate Gerbers,<br>
> if it comes to that. It'd be a quick hour or so. You'd<br>
> still have to find somewhere to fab 'em - I typically use<br>
> OSHPark or Advanced Circuits.<br>
> ><br>
> > It's worth noting that the original design uses 4136's, but<br>
> might be more useful if they were swapped to the more common<br>
> quad op-amp package.<br>
><br>
> That was one of the main changes I would make if, in my dream<br>
> world, I could actually redo the whole thing. Fortunately I<br>
> have lots of 4136s.<br>
><br>
> The other thing is that it might be interesting to put sine<br>
> shapers on the oscillators that form the Lissajous baseline.<br>
> I don't know how it would look with an ellipse instead of a rhomboid.<br>
><br>
><br>
> > On Oct 19, 2016, at 5:40 PM, David G Dixon<br>
> <<a href="mailto:dixon@mail.ubc.ca">dixon@mail.ubc.ca</a>> wrote:<br>
> ><br>
> > I would be happy to make one for you, Terry. I make my own<br>
> boards all<br>
> > the time, and sell quite a few of them to other hobbyists.<br>
> ><br>
> > I have one or two questions about the layout graphic, but<br>
> we can deal<br>
> > with that if you decide you want me to do it.<br>
><br>
> This list is getting more helpful all the time. I need to get<br>
> past Halloween before doing anything but after that...<br>
><br>
><br>
> > On Oct 19, 2016, at 5:54 PM, Dave Manley <<a href="mailto:dlmanley@sonic.net">dlmanley@sonic.net</a>> wrote:<br>
> ><br>
> > Egads, I remember reading that article in my high school<br>
> library when it was first published.<br>
> ><br>
> > ObSdiyContent: it must have been about the same time<br>
> PAiA's 2700 was in Radio-Electronics...<br>
><br>
> Yep, I was a subscriber when I was in high school. I really<br>
> wanted to build one. It only took me a couple of decades to<br>
> get around to it.<br>
><br>
> The dog-eared magazine is in the next room right now. The pdf<br>
> article on my blog is a recreation of the original, OCRed and<br>
> reset in the original typeface.<br>
><br>
><br>
> Terry Bowman, KA4HJH<br>
> "The Mac Doctor"<br>
><br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Quincas Moreira<br>Test Pilot at VBrazil Modular</div>
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