ComputerVoltageSources

Works for me.

When the unit is stopped, the knobs can be mapped differently than when in the "Run" 
mode.

--- In ComputerVoltageSources@yahoogroups.com, "John Loffink" <jloffink@...> wrote:
>
> Doc,
> 
> No problem making the suggestion.  A free flow of ideas is good.  Here are a
> couple of considerations that I see:
> 
> 1.  Dave has already allocated all pins of the ATtiny2313.  We'd need a
> larger ATMEGA device for the button inputs.
> 2.  MIDI RX at the CVS board can't be easily shared, or OR'd as suggested,
> unless you have a toggle to turn external MIDI on/off or insure MIDI IN is
> not used.  So MIDI from the LCD Support PCB to the CVS PCB requires another
> dedicated pin on the BASIC ATOM PRO.
> 3.  Need a cursor character for button data entry, which consumes one of the
> programmable LCD characters.
> 4.  Program or parameter selection can also be done from the CVS knobs, if
> so desired.  Maybe one knob scrolls through functions, another changes the
> values.  This makes buttons redundant, but dedicates the knobs to that
> function.
> 5.  Data entry is really valuable if we have runtime Flash storage, which we
> apparently get with the ATOM PRO 28M.  
> 
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com
> 
> 
> > -----Original Message-----
> > From: ComputerVoltageSources@yahoogroups.com
> > [mailto:ComputerVoltageSources@yahoogroups.com] On Behalf Of drmabuce
> > 
> > Hi All (especially John, Dave, Eric & any other LCD enthusiasts)
> > first off,
> > 
> > please feel free to tell me to [insert favorite euphemism for consume
> > feces and cease to exist here] because i lack the expertise and the
> > time to pitch in on this suggestion in any substantive way....
> > 
> > it's a fair cop...
> > 
> > but here goes
> > 
> > i've been trying to digest all the discussion about the LCD
> > implementation and my (so-called) mind wandered into the question of
> > using this gadget not only as a display but as part of an INPUT scheme
> >  for user interaction as well.
> > (yes! i know i've always been sort of indifferent to the LCD before
> > and so i have to wear the 'hypocrite hat' for 24 hours too!)
> > 
> > 
> > 
> > ------------
> > but considering the following two design ideas:
> > 
> > a separate (Samsung? Hitachi?) microcontroller residing on a separate
> >   PCB with the LCD
> > 
> > and
> > 
> > a fairly flexible and open-ended interface, specifically: piggybacking
> > display data traffic on MIDI sysex
> > (which strikes me as cleverer every time i think about it... kudos Dave!)
> > -------
> > 
> > Is it feasible and practical to consider the addition of a few (maybe
> > 5) buttons to interact with the display via cursor? (up down left
> > right  enter)
> > and THUS transmit some data to the main CSV processor (ie program
> > selection parameter select etc.) via sysex
> > Now as i have already expressed my readiness to be openly ridiculed
> > for broaching such a can of worms. Let me say that i have a little
> > experience with the software side of interpreting 'Keyhole' interfaces
> >  and i realize that as a user interface, they are far from luxurious
> > (ala the DX7 or the Mirage)
> > 
> > i also realize that we'd have to "OR" into the RXD pin on the Main
> > processor but that doesn't 'SEEM' to intrusive to my unschooled eye.
> > 
> > so i'll shut up about this now
> > and leave this notion to those better able to judge it's merits than
> > myself
> > 
> > a tip of the hat to all for keeping this barn-raising in motion,
> > -doc
> >
>