ComputerVoltageSources

PSIM as a reference platform didn't go very far when it was last proposed on
3/7/2006.  Check the archives.

Larry, you should understand that you're asking Dave to contribute dozens to
hundreds of hours to design a new PCB, when one has already been provided
and tested.  No one says that you can't depopulate the current design to get
a PSIM like subset if that's what you desire.

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 Larry T.
> Sent: Tuesday, April 24, 2007 11:38 AM
> To: ComputerVoltageSources@yahoogroups.com
> Subject: [ComputerVoltageSources] PSIM replacement
> 
> I'm glad that I've brought a little life to this list, it shows that
> there are people like me that wanted a PSIM and will probably never
> get one, at least not from Brice.
> 
> If I may be so bold as to suggest that we have a reference design in
> the form of the PSIM itself.  4 analog inputs, 4 analog outputs, 6
> LEDs, Run/Stop/Reset inputs/switches, and RS-232.  With the addition
> of I2C planned expansion to the board itself, we have a usable, and
> VERY expandable module.  Were there any other I/O 'paths' that were
> included with the MPU in this design (I don't remember all of the
> discussions we've had over the last year)?  The greatest expansion for
> this module would be off-board via the I/O paths allowing for an
> unlimited number of options and modules to be developed.
> 
> I personally want to build the module for use with 1/4" jacks in
> either DotCom or MOTM format.  I would eventually end up building all
> of Dave's add-ons, but with the I2C, I could build as many modules as
> I wanted, and locate then anywhere it was convenient within my synth
> layout.
> 
> The one advantage of Brice's PSIM was that it did get built and some
> people got one.  Therein lies the biggest drawback to this group, the
> 'design by committee' has never ended and while there have been a lot
> of really good ideas, the complexity of the reference design has
> stopped the module from actually becoming a reality.
> 
> Dave, could you design a PSIM-like base unit, usable for some CV I/O
> but certainly not what add-ons could make?  Then as add-ons are
> developed, we can pick and choose?  If there was a tested PCBExpress
> (or other board maker design) I'd buy three (or whatever the minimum
> was) and either keep them or sell the extras.
> 
> Please, we are actually so close at this point...
> 
> Larry T.
>