[sdiy] MIDI output current and MIDI-driven gadgets

[Mike Bryant]

Not sure where you are seeing a hub ?   Most sound generating boxes with USB can operate in either mode so you can plug a keyboard straight in, no hub, PC or anything just as you would with DIN.
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From: Benjamin Tremblay <btremblay at me.com>
Sent: 04 June 2026 14:35
To: Mike Bryant <mbryant at futurehorizons.com>
Cc: Synth DIY <synth-diy at synth-diy.org>
Subject: Re: [sdiy] MIDI output current and MIDI-driven gadgets

If USB wasn’t a hub-based protocol with a built-in cost of adoption.
The actual wiring for USB is just fine and getting better all the time. What’s wrong for MIDI is this 90s-era idea of a “peripheral” Zip drive that is powered by your gateway 2000 laptop. All that brilliant design thinking ruined USB for MIDI because a hub is nothing but a toll gate we already paid for and nobody wants. Does anyone really want a hub at all?

Benjamin Tremblay

On Jun 4, 2026, at 9:30 AM, Mike Bryant <mbryant at futurehorizons.com> wrote:


You mean USB ?  🙂
________________________________
From: Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of Benjamin Tremblay via Synth-diy <synth-diy at synth-diy.org>
Sent: 04 June 2026 14:19
To: Synth DIY <synth-diy at synth-diy.org>
Subject: Re: [sdiy] MIDI output current and MIDI-driven gadgets

Why can’t we just develop a new protocol based on cheap UARTs and passive components that runs I dunno 25x faster and works like patch cords instead of hubs, isn’t gated by some consortium, and is backward compatible if you add a cheap adapter?


Benjamin Tremblay

> On Jun 4, 2026, at 8:47 AM, Neil Johnson via Synth-diy <synth-diy at synth-diy.org> wrote:
>
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> Mike Bryant wrote:
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>> Agree on the spec, but 48V would destroy many of these Chinese MIDI
>> devices that omit the opto-isolator =F0=9F=98=84
>>
>
> Yes - the bonus feature.
>
> Neil
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> <div dir=3D"ltr"><div dir=3D"ltr">Mike Bryant wrote:</div><div class=3D"gma=
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> Agree on the spec, but 48V would destroy many of these Chinese MIDI devices=
> that omit the opto-isolator
> <span id=3D"m_-4663179895464832597=F0=9F=98=84">=F0=9F=98=84</span></div></=
> div></div></blockquote><div><br></div><div>Yes - the bonus feature.</div><d=
> iv><br></div><div>Neil</div></div></div>
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