[sdiy] dumb midi wiring question...

[Fredrik Carlqvist]

Actually, MIDI has only two wires.

It's optional to connect the shield at all. And if you do
so, you should only connect the shield at the senders side.
The two MIDI IN wires should never go to anything except the
optocoupler. Again, don't ground anything (or you will have
ground loops)!

Hope this helps!

Fredrik C

-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of
James R. Coplin
Sent: den 30 mars 2004 02:46
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] dumb midi wiring question...

I'm trying to install a Kenton MIDI kit into a Memorymoog+
for a buddy of mine. He doesn't want to drill any additional
holes in the unit and the Memorymoog freaks out if I remove
the Plus MIDI board. My idea was to build a breakout cable
for some of the unused 1/4" jacks in the back using TRS
jacks since MIDI only has 3 wires. The question is, since
the TRS will ground to the chassis, is it OK to hook up the
shield wire from the MIDI to that or is the shield used for
something that chassis ground would interfere with? Thanks.

James R. Coplin
***************
If anyone asks of my whereabouts,
simply tell them i've gone out the window for a spot of tea
and am not expected back any time soon.
***************

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth- 
> diy at dropmix.xs4all.nl] On Behalf Of Peter Grenader
> Sent: Monday, March 29, 2004 11:35 AM
> To: xyzzy at sysabend.org; Tim Johnson
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Front Panel for DIY Synth
> 
> This is the same process that the place I speak about uses
- 
> Photo-graphics, Inc - but they have a slightly smaller
panel size -> 
> 12 x 20. But, they will image the legend and trim that
panel into as 
> many pieces you wish for $159 per 12 x 20 panel, not
including film 
> and drilling (which I've never had them do).  All they
need then is a 
> sheet of emulsion down, negative right reading film to do
it. They 
> ship promptly in ten days and can do up to .062
(pretreated as well - 
> you can't supply them the material) in satin or brushed
finish.
> 
> I once had 15 pieces laid out in one of these panels -
there was no 
> upcharge for trimming those 15 to size.  Obviously, I am
quite pleased 
> with their service.
> 
> They charge an additional $50 for film from a supplied
coral draw 
> document which CAN include a pdf (this is what I do as I
am a Mac 
> person - C Draw can open a pdf.).  The least expensive
film I've found 
> from a dedicated film house in this size is $35, and
remember, I'm a 
> print art director - I know the hot tickets.  Add shipping
to this to 
> get the negs to Photographics and you are pretty close to
even, 
> without all hassle of dropping the file off, picking the
film up and 
> then shipping it out for imaging to Photographics.
> 
> In any event, I went with this process after a few
occasions of 
> shelling out a ton of $$ for one-off silkscreening, that
each time 
> started coming off within a few weeks.  What Metalphoto
and 
> Photogrphics does is spot anodizing
> - these graphics are permanently imaged onto the sheet of
material.  
> STS uses the same process.  There are a few who do this -
it's a 
> farily common procedure.
> 
> 
> 
> Tom Arnold wrote:
> 
> > On Mon, Mar 29, 2004 at 08:55:45AM -0500, Tim Johnson
wrote:
> >> http://www.itn.liu.se/~nikro/diy/panels.html
> >>
> >> Why is it so expensive? Is it available in the U.S.?
> >
> > This looks to be the like the Metalphoto process.
> > http://www.horizonsisg.com/Metalphoto/
> >
> > The main difference being that Horizons just has
pre-treated panels 
> > available unstead of treating yours.
> >
> > For a ballpark price on the initial materials, 1/8"
20x24 ( those 
> > panels looked fairly large ) are a 3pack for $262 ( 2002
pricelist ).
>