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<div dir="ltr" data-setdir="false">Excellent, thanks so much! I should probably get KiCad running anyway so if you haven't already uploaded the BOMs, I can get the info from your KiCad files. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I'm intrigued by this idea of using laptop power supplies too. </div><div dir="ltr" data-setdir="false">You would still need to create the negative voltage and so on, right?</div><div><br></div>
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On Tuesday, January 28, 2020, 05:03:48 PM EST, Matti Palm <matti.palm@gmail.com> wrote:
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<div><div id="yiv8304697471"><div><div dir="ltr"><div dir="ltr"><div dir="ltr">Tried to post a too large image last time for the list. Sorry if this is a double post:<span class="yiv8304697471gmail-im"></span><div><br clear="none"></div><div>I'll upload the BOM. You can also open it in KiCad.<div>A couple of things you may or may not like:</div><div>- The heatsinks are put on the outside and fastened in the case separately.</div><div>- The ground plane and power traces are pretty good at sucking out the heat when soldering. Crank up the temp.</div><div>- Be careful with the mains. I used an aluminum box where I attach the ground wire and a double fused switch, so I don't drop a screwdriver on the high voltage stuff. Also used a lot of heat shrink there.</div><div><br clear="none"></div><div>/matti</div></div></div></div><br clear="none"><div class="yiv8304697471yqt9202784064" id="yiv8304697471yqt60474"><div class="yiv8304697471gmail_quote"><div class="yiv8304697471gmail_attr" dir="ltr">On Tue, Jan 28, 2020 at 9:19 PM Didier Leplae <<a rel="nofollow" shape="rect" ymailto="mailto:didierleplae@yahoo.com" target="_blank" href="mailto:didierleplae@yahoo.com">didierleplae@yahoo.com</a>> wrote:<br clear="none"></div><blockquote class="yiv8304697471gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex;"><div><div style="font-family:verdana, helvetica, sans-serif;font-size:13px;"><div></div>
<div dir="ltr">I'm gonna go ahead and order some of these PCBs that you sent Matti. Thanks!</div><div dir="ltr">I may or may not use the PSUs but for $2 I can order 5 of them, so why not?</div><div dir="ltr">Is there a BOM with these? </div><div><br clear="none"></div>
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On Tuesday, January 28, 2020, 02:48:03 AM EST, Matti Palm <<a rel="nofollow" shape="rect" ymailto="mailto:matti.palm@gmail.com" target="_blank" href="mailto:matti.palm@gmail.com">matti.palm@gmail.com</a>> wrote:
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<div><div id="yiv8304697471gmail-m_-3995824529954465232yiv1616454295"><div><div dir="ltr"><div dir="ltr"><div dir="ltr">I made bus boards that I am happy with: <a rel="nofollow" shape="rect" target="_blank" href="https://github.com/mattip123/Eurorack-Bus-board">https://github.com/mattip123/Eurorack-Bus-board</a></div><div>And also a simple linear PSU with LM317/LM337 that I find low noise: <a rel="nofollow" shape="rect" target="_blank" href="https://github.com/mattip123/PSU-Matti">https://github.com/mattip123/PSU-Matti</a></div><div>Maybe it can be of help if you use KiCad and want a starting point.</div><div><br clear="none"></div><div>/matti</div></div></div><br clear="none"><div><div id="yiv8304697471gmail-m_-3995824529954465232yiv1616454295yqtfd04871"><div dir="ltr">On Tue, Jan 28, 2020 at 8:12 AM Brian Willoughby <<a rel="nofollow" shape="rect" ymailto="mailto:brianw@audiobanshee.com" target="_blank" href="mailto:brianw@audiobanshee.com">brianw@audiobanshee.com</a>> wrote:<br clear="none"></div></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex;"><div id="yiv8304697471gmail-m_-3995824529954465232yiv1616454295yqtfd55427">If you’re going to the trouble of making custom bus boards, why not just put a few extra parts on there and make a power supply? Grab a book that covers audio power supplies.<br clear="none">
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Lately, I’ve been favoring external wall warts that output AC instead of the typical DC. I then use the simply two-conductor barrel connector to feed a bog standard linear regulator. If you need multiple voltages, pull them all off the same leg.<br clear="none">
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I just bought a 7U by 104HP case myself, so I’m just getting started designing my own 1U modules. I’m still new myself, but it seems that 1U is typically 5V-powered, and intellijel seem to have simpler 2-wire 5V supply cables and connectors for the same on their power supplies. Then again, I may be missing something.<br clear="none">
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Brian<br clear="none">
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On Jan 27, 2020, at 9:51 PM, Didier Leplae via Synth-diy <<a rel="nofollow" shape="rect" ymailto="mailto:synth-diy@synth-diy.org" target="_blank" href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br clear="none">
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>> How are you handling distribution? <br clear="none">
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> I was considering making some custom bus boards as well, just to save $$. <br clear="none">
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On Mon, Jan 27, 2020 at 10:28 PM Didier Leplae via Synth-diy <<a rel="nofollow" shape="rect" ymailto="mailto:synth-diy@synth-diy.org" target="_blank" href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br clear="none">
> I hope this question hasn't been covered ad nauseam in the past but here goes...<br clear="none">
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> I built a custom case for Eurorack that is 84 hp wide. <br clear="none">
> It has 7 "normal" rows plus a 1u row. (I guess that makes a total of 672 hp)<br clear="none">
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> I have roughly figured I will need a power supply with @ 3A for +12V and 2A for -12V. (The 5V seems to be hardly used and yet the power supplies I've looked at have an overabundance, probably 1A would be plenty )</div><br clear="none">
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