ComputerVoltageSources

All of my Blacet modules have panel-mounted pots and they work fine...?

--- In ComputerVoltageSources@yahoogroups.com, David Kronemyer
<dkronemyer@...> wrote:
>
> If I could just chime in here, it¹s crazy to mount anything to the PCB
> except for wires.  A few good twists (as in knobs) or push-pulls (as in
> plugs) and they¹re history.  For lack of a better expression, they
³torque
> out² (an old surfing term).  This is why e.g. Whirlwind stage boxes
(with
> which I have too much familiarity) tend to fall apart quickly ­ all the
> connectors are PCB mounted.  DAVID
> 
> 
> On 3/10/06 1:49 PM, "Grant Richter" <grichter@...> wrote:
> 
> > First, no offense to Chris for an excellent question.
> > 
> > Don't talk to me about "no screw holes in the faceplate" that is
why you don't
> > see Wiard 
> > modules in MOTM format. That idea is insulting to any designer.
> > 
> > Spend your time thinking about MUSIC, forget the g*dd*mn
screwholes, get some
> > therapy 
> > for your out of control OCD behavior, how many times do you wash
your hands a
> > day?????????????????? (loud hissing of steam escaping from ears).
> > 
> > I apologize for the rant, silly limitations really annoy me.
> > 
> > There is no advantage to ANY panel mounted components being in
hard copper on
> > the PC 
> > board.
> > 
> > What if someone wants to use it for controlling dimmer packs for a
hobby
> > theater?
> > Then the board would be bench top mounted horizontally and the
pots would be
> > slide 
> > pots. It could support both 0-10 volt packs and the MIDI
controlled ones.
> > 
> > What about using it to control servo laser scanners for a laserium
light show?
> > (those are 
> > voltage outputs to current drivers)
> > 
> > What if all the pots are force sensing resistors built into a
dancers suit?
> > 
> > What about if it is used for squib control to light the "Burning
Man" on fire
> > when 
> > Interstellar Overdrive reaches the climax?
> > 
> > OK, those are meant to be humorous examples, but also practical
applications.
> > 
> > I don't see an anvantage favoring any mounting position or
potentiometer type,
> > spacing or 
> > placement. I would just use the Wiard pigtail pot assembly method.
That is
> > each pot, 
> > switch or whatever has a dedicated 0.100 KK connector. You can
always solder
> > directly to 
> > the PC pads and skip the connectors.
> > 
> > I would use the extra space for as much perf board area as
possible for
> > hanging more 
> > experimenters chips, sensors, high current servo drivers etc.
> > 
> > We will have holes in the right spots for that MOTM metal bracket
thingy. Can
> > sombody 
> > tell me what that spacing and hole size is?
> > 
> > A 4 x 6 board will fit in a Frac-Rac. Is 6-7 inches too deep for
MOTM and
> > Doepfer racks?
> > 
> > 
> > 
> > 
> > --- In ComputerVoltageSources@yahoogroups.com, xamboldt
<xamboldt@> wrote:
> >> >
> >> > Or... if pots aren't PCB-mounted, what panel components should be?
> >> > MIDI Jacks? DIN? LEDs? We've already heard that DIN might not be
> >> > something everyone would want...
> >> > 
> >> > Would there be room for 4 pots and MIDI I/O?
> >> > 
> >> > -Chris
> >> > 
> >> > On Mar 10, 2006, at 3:10 PM, xamboldt wrote:
> >> > 
> >>> > > Can of worms warning!
> >>> > >
> >>> > > Should the PCB be laid out so as to allow PCB-mounted pots for
> >>> > > perhaps 4 or 6 of the controls? Different front panel
formats could
> >>> > > be allowed for by simply doing point-to-point wiring instead
of PCB
> >>> > > mounting the pots. The difficulty comes in deciding which format
> >>> > > would be used to dictate the spacing of holes for the
PCB-mounted
> >>> > > pots. Both Blacet and MOTM have standards we could
appropriate for
> >>> > > PCB-mounted pots. The CVS' pots (as spelled out by Grant)
are grouped
> >>> > > in functional units of 4, and that is the typical max vertical
> >>> > > allowance of pots on an MOTM panel. Blacet has up to 6
maximum, but
> >>> > > plenty of designs have fewer pots.
> >>> > >
> >>> > > I guess someone had to bring it up....  :)
> >>> > >
> >>> > > -Chris
> >>> > >
> >>> > >
> >>>> > > >
> >>>> > > > I think we can use the Metalbox style 1900H knobs and
Alpha pots
> >>>> > > > for Frac-Rac.
> >>>> > > > The jack spacing should accept either Switchcraft (Blacet) or
> >>>> > > > 16PJ135 (Wiard) jacks.
> >>>> > > > The 16PJ135 jacks wire up very neatly because of the
ground tangs
> >>>> > > > being in-line.
> >>>> > > > The knurled nuts are designed to be assembled with
fingernails, so
> >>>> > > > that is one less tool
> >>>> > > > you need.
> >>> > >
> >> >
> > 
> > 
> > 
> > 
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