[sdiy] Adding a 5-pin MIDI DIN connection to a kybd controller with USB

[Peter Pearson]

Get a Yamaha CBX-K1.  They're great!  Would recommend.

On Mon, Jul 18, 2022 at 2:29 PM Logan Mitchell Sr via Synth-diy <
synth-diy at synth-diy.org> wrote:

> Thanks Brian.
>
> Unfortunately for me, finding a keyboard controller with mini keys that
> has a 5-pin DIN connector is not easy as it once was, so I may have to
> settle for a full-sized kybd controller that already has the built-in 5-pin
> DIN connector(s).
>
> The mini keys factor allow me to store & transport that kybd & the desktop
> hardware synths in the same case and now that I use a cane to help support
> my walking with severe flat feet, a single transport storage case makes it
> easier using a small fold-up luggage cart.
>
> Getting old isn't easy.
>
> Logan
> ------------------------------
> *From:* Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of brianw <
> brianw at audiobanshee.com>
> *Sent:* Sunday, July 17, 2022 23:49
> *To:* Synth-diy at synth-diy.org <Synth-diy at synth-diy.org>
> *Subject:* Re: [sdiy] Adding a 5-pin MIDI DIN connection to a kybd
> controller with USB
>
> Logan,
>
> Those newer desktop synths that have 5-pin DIN classic MIDI and USB
> already have a microprocessor to control the synth engine, and USB, and
> MIDI. The firmware was written to handle all three, and the MIDI is just a
> serial port with the correct settings and code to pass along the messages,
> in and out.
>
> Any keyboard controller that has a USB connection built-in will already
> have a microprocessor, but it might not have a serial port (for MIDI), or
> if it does have a serial port then the pins might be used for something
> else, or if they're not used then they still might be inaccessible under
> the microprocessor chip package. The firmware would have to be rewritten to
> add 5-pin DIN classic MIDI if it wasn't originally designed into the
> product. There's a very small chance that your USB keyboard controller
> already supports 5-pin classic MIDI on the PCB, but you'd have to figure
> out how to wire it up.
>
> As for your realistic options:
>
> You could replace your keyboard controller with one that has both USB and
> classic MIDI (or even one that has only classic MIDI).
>
> Apart from that, you could design your studio around a device that can act
> as a hub for all kinds of MIDI: classic 5-pin DIN, ethernet (RTP-MIDI), and
> USB-MIDI. This option isn't cheap, but then you don't have to worry about
> adding new modules or devices that aren't like the rest.
>
> Brian
>
>
> On Jul 17, 2022, at 7:51 PM, Benjamin Tremblay via Synth-diy <
> synth-diy at synth-diy.org> wrote:
> > You will need a microprocessor like an arduino or pic to be a usb host
> and convert to 5 pin serial. The Teensy 4 will do this very well.  The
> Teensy 4.1 has a USB host kit so you could prototype it with usb cables.
> >
> > Benjamin Tremblay
> >
> > On Jul 17, 2022, at 10:29 PM, Logan Mitchell Sr via Synth-diy <
> synth-diy at synth-diy.org> wrote:
> >> Does anyone know if a keyboard controller that has a USB connection
> built-in can have a S-pin DIN MIDI connection added to it and if so how
> would that be done ?
> >>
> >> I have some older 5-pin MIDI DIN modules & two newer desktop hardware
> synths that have the 5-pin DIN style MIDI connectors built in along with
> built-in USB connections but I prefer to use the 5-pin MIDI DIN connections
> for the sake of end to end compatibility as some of the older modules are
> pre-USB devices.
> >>
> >> Logan
>
>
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