<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style>
<!--
@font-face
{font-family:"Cambria Math"}
@font-face
{font-family:Calibri}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline}
span.EmailStyle18
{font-family:"Calibri",sans-serif;
color:windowtext}
.MsoChpDefault
{font-family:"Calibri",sans-serif}
@page WordSection1
{margin:72.0pt 72.0pt 72.0pt 72.0pt}
div.WordSection1
{}
-->
</style>
</head>
<body lang="EN-GB" link="blue" vlink="purple" style="word-wrap:break-word">
<div dir="auto">If you take the cheap ones apart you usually find the PCB has pinout for an optoisolator but with a resistor installed instead. Cut that out and put a opto in instead.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 14 Jan 2023 09:54, ShedSynth via Synth-diy <synth-diy@synth-diy.org> wrote:<br type="attribution">
</div>
</div>
<div>
<div class="WordSection1">
<p class="MsoNormal"><span style="">Re the video’s complaint that only MIDI IN is opto-isolated: I think I’m right that this is correct implementation (please contradict if not).</span></p>
<p class="MsoNormal"><span style="">The MIDI OUT on any device is actively driven from the device’s own power, and whatever MIDI IN you plug that into will/should be opto-isolated so no ground loop or smoke.</span></p>
<p class="MsoNormal"><span style=""> </span></p>
<p class="MsoNormal"><span style="">But the video is probably right about the £5 USB/MIDI interfaces not isolating MIDI IN.</span></p>
<p class="MsoNormal"><span style="">Does anybody know any cheap USB/MIDI cables which do isolate?</span></p>
<p class="MsoNormal"><span style=""> </span></p>
<div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Synth-diy <synth-diy-bounces@synth-diy.org>
<b>On Behalf Of </b>Nathan Trites<br>
<b>Sent:</b> 13 January 2023 16:26<br>
<b>To:</b> David Messenger <mssngr1@pacifier.com><br>
<b>Cc:</b> synth-diy@synth-diy.org<br>
<b>Subject:</b> Re: [sdiy] M-Audio Midisport Uno Wire to pin ?</span></p>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">If you havent sorted this out yet - here is a youtube video where you can see how it's wired: <a href="https://youtu.be/Xv5-5CUNFvI?t=75">https://youtu.be/Xv5-5CUNFvI?t=75</a></p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Nathan</p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal">On Sat, Jan 7, 2023 at 5:14 PM David Messenger <<a href="mailto:mssngr1@pacifier.com">mssngr1@pacifier.com</a>> wrote:</p>
</div>
<blockquote style="border:none; border-left:solid #CCCCCC 1.0pt; padding:0cm 0cm 0cm 6.0pt; margin-left:4.8pt; margin-right:0cm">
<p class="MsoNormal">I have to rewire the in/out DINs on a Midisport Uno that lost it's midi
<br>
plugs. There is one wire that has red-black-yellow and a bare ground, <br>
and then the other cable has just red and white. Anyone know which pins <br>
each of these wires should be reattached to? TY D.<br>
<br>
<br>
-- <br>
This email has been checked for viruses by AVG antivirus software.<br>
<a href="http://www.avg.com" target="_blank">www.avg.com</a><br>
_______________________________________________<br>
Synth-diy mailing list<br>
<a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br>
<a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>
Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">
marketplace@synth-diy.org</a></p>
</blockquote>
</div>
</div>
</div>
</body>
</html>