Re: [LAU] Galvanic isolation (was: Re: pianos with built in recorders?)

I believe that the MIDI spec

http://www.midi.org/techspecs/electrispec.php

says that you must have a opto-isolator. Devices without one are probably
not compliment ... don't know about direct usb connections.

On Thu, Dec 24, 2015 at 10:51 AM, Len Ovens <len@email-addr-hidden> wrote:

> On Thu, 24 Dec 2015, Len Ovens wrote:
>
> PCI slots on motherboards are getting hard to find. However, it seems they
>> all still have two serial ports as headers if not on the back. Maybe try
>> this:
>>
>> http://www.maxmidi.com/diy/serial/
>>
>> Note: this is old (I better pdf it) it makes mention of ISA slots :) But
>> it would still work fine now. There are serialport midi drivers for Linux.
>>
>
> Actually, much simpler would be to just take the optocoupler and add an
> inverter (or two) after to feed the computer. (basically a thru box) Make
> sure power comes from the receiver (computer in this case).
>
> --
> Len Ovens
> www.ovenwerks.net
>
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>

-- 
**** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob@email-addr-hidden
WWW:   http://www.mellowood.ca

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Received on Fri Dec 25 00:15:02 2015