[sdiy] Midi 3.5mm cable

[Quincas Moreira]

Yes Pete.  I have the BSP and indeed it uses TRS, while the Beatstep uses
only TS.  And I concur, there's no need to connect the ground from the midi
cable to the receiving end, so it's easy enough to leave the Sleeve free
and just connect tip and ring, thus avoiding the problem with the grounded
panel.  My thermofit solution (which turned out pretty elegant IMO, not
messy at all) was only because I'm using the Beatstep adaptor rather than
the BSP adaptor, since I do use those for the BSP, and I had the Beatstep
one laying around unused.



Q

On Thu, Aug 25, 2016 at 8:41 AM, Pete Hartman <pete.hartman at gmail.com>
wrote:

> And to clarify some on that too: nobody says the sleeve ground has to be
> connected to the DIN ground.....
>
> On Thu, Aug 25, 2016 at 5:04 AM, Paul Burns <paul at pbdj.co.uk> wrote:
>
>> When Mutable Instruments first brought out the Grids Module , the first
>> thing I did was make the smallest possble Midi converter I could  using a
>> stereo 3.5mm jack...left, right, ground. Works just fine. Hid it all behind
>> a 4 HP panel. Cable has TRS 3.5mm one end , 5 pin din the other.
>>
>>
>> regards
>>
>>
>> Paul
>>
>>
>>
>>
>> On 25 August 2016 at 07:59 ASSI <Stromeko at nexgo.de> wrote:
>>
>>
>> On Wednesday, 24 August 2016 15:27:38 CEST rsdio at audiobanshee.com wrote:
>>
>> mini-DIN receptacles are still a lot larger than low-profile 3.5mm jacks.
>>
>> The standard board profile for through-hole about 13mm on all sides,
>> Switchcraft 3.5mm board mount is 12x12x5mm³. Panel mountable hardware
>> requires about 14x25x10mm³ (fastened with two screws), Kycon 3.5mm panel
>> mount
>> is roughly 10mm on all sides. There are smaller miniDIN variants that are
>> fastened with only a single screw or snap-in to the panel, but I'd avoid
>> the
>> latter at least for DIY.
>>
>> So in theory you might get two 3.5mm jacks panel mounted to the same
>> space
>> where one mini-DIN goes, but your users would curse you for it. Any other
>> way
>> it's a wash from where I sit. Plus mini-DIN has dual receptables for
>> doing
>> MIDI In / Out readily available (even color-coded for mouse/keyboard).
>>
>> If
>> you're going to have a MIDI connector that isn't standard, then you might
>> as well use the smallest components. MIDI is quite forgiving of cheap
>> cables and connectors, so long as they don't completely fail.
>>
>> Other equipment using the 3.5mm jack for audio might not be so forgiving.
>>
>> Say you wanted _larger_ MIDI plugs because you expect klutzy users… just
>> because CEE plugs are large and have five pins doesn't mean it's be a
>> good
>> idea to use them in this application.
>>
>> A D-sub DA-15 could be wired like the old Soundblaster audio card, and
>> that
>> would at least be compatible with some MIDI interfaces. Not sure whether
>> it
>> would be slightly taller than a 3.5mm (certainly wider!).
>>
>> It would not only be taller than 3.5mm, but also slightly taller than
>> mini-
>> DIN. If you're trying to go smaller, then using an RJ 6p6c (telephone) or
>> 8p8c jack (ethernet) might be an option, but then you'll have to make
>> your own
>> adapters. I still have a plan for a MIDI matrix that was supposed to use
>> the
>> latter in order to fit into 1U in the rack.
>>
>>
>> Regards,
>> Achim.
>> --
>> +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
>>
>> Samples for the Waldorf Blofeld:
>> http://Synth.Stromeko.net/Downloads.html#BlofeldSamplesExtra
>>
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-- 
Quincas Moreira
Test Pilot at VBrazil Modular
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