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.
> >
>