Discussion:
USB to MIDI cable
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Les Cargill
2014-06-11 00:40:07 UTC
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I am looking into a WK 7600 Casio. It doesn't have any MIDI 5-pin DIN
ports, just a USB socket like what's on a printer ( square-with-beveled
shoulders - a "Standard B plug". )

There are many cables/adapters that have a USB A connector and two ( one
in, one out ) 5 pin DIN MIDI connectors.

I need the *opposite* of this - I need a USB B connector on one end,
one each MIDI IN/OUT 5-pin DIN on the other. If it's active, fine.

I know I can bridge the MIDI streams on a computer - this woule be
something that would work without a computer.
--
Les Cargill
Clemens Ladisch
2014-06-11 19:46:10 UTC
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Post by Les Cargill
I am looking into a WK 7600 Casio. It doesn't have any MIDI 5-pin DIN
ports, just a USB socket like what's on a printer ( square-with-beveled shoulders - a "Standard B plug". )
There are many cables/adapters that have a USB A connector and two ( one in, one out ) 5 pin DIN MIDI connectors.
I need the *opposite* of this - I need a USB B connector on one end,
one each MIDI IN/OUT 5-pin DIN on the other.
USB is _not_ a peer-to-peer protocol; it requires a "device" on one end
and a "host" on the other end.

This keyboard is a device, and works only with a computer.
(And I guess it wants to be powered through USB.)

In theory, it would be possible to use a really small computer (such as
a Raspberry Pi), but then you'd have to add a 'normal' USB/MIDI cable,
or hack it to add the MIDI ports.

The easiest way to use this keyboard without a computer is to replace it
with some other keyboard.


Regards,
Clemens
Les Cargill
2014-06-12 04:10:02 UTC
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Post by Clemens Ladisch
Post by Les Cargill
I am looking into a WK 7600 Casio. It doesn't have any MIDI 5-pin DIN
ports, just a USB socket like what's on a printer ( square-with-beveled shoulders - a "Standard B plug". )
There are many cables/adapters that have a USB A connector and two ( one in, one out ) 5 pin DIN MIDI connectors.
I need the *opposite* of this - I need a USB B connector on one end,
one each MIDI IN/OUT 5-pin DIN on the other.
USB is _not_ a peer-to-peer protocol; it requires a "device" on one end
and a "host" on the other end.
Right. Hence "If it's active, that's fine." I know it needs to be a host.

That would have been good information to put in my post, though.
Post by Clemens Ladisch
This keyboard is a device, and works only with a computer.
(And I guess it wants to be powered through USB.)
No, it's powered by a 12VDC wallwart.
Post by Clemens Ladisch
In theory, it would be possible to use a really small computer (such as
a Raspberry Pi), but then you'd have to add a 'normal' USB/MIDI cable,
or hack it to add the MIDI ports.
Sure. That's far too much trouble :)
Post by Clemens Ladisch
The easiest way to use this keyboard without a computer is to replace it
with some other keyboard.
Excellent assessment. I think it's a deal breaker. I just figured with
all the cheap keyboards coming with USB only, maybe there was this
device out there, somewhere.
Post by Clemens Ladisch
Regards,
Clemens
--
Les Cargill
TheChris
2018-06-12 17:46:12 UTC
Permalink
Post by Les Cargill
I am looking into a WK 7600 Casio. It doesn't have any MIDI 5-pin DIN
ports, just a USB socket like what's on a printer ( square-with-beveled
shoulders - a "Standard B plug". )
There are many cables/adapters that have a USB A connector and two ( one
in, one out ) 5 pin DIN MIDI connectors.
I need the *opposite* of this - I need a USB B connector on one end,
one each MIDI IN/OUT 5-pin DIN on the other. If it's active, fine.
I know I can bridge the MIDI streams on a computer - this woule be
something that would work without a computer.
Somebody just lent me an Oxygen 25. Same type of animal. Not traditional
MIDI at all. You connect it to a laptop, and use soundfonts to hear it.

As an early MIDI adopter, I'm seeing less and less devices for true MIDI.
Sounds like your Casio and this M-Audio device are examples... Mine
expects to be powered over the USB cable.

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