ComputerVoltageSources

Dave,

You have some good points for MIDI as an expansion interface.  I'm sold.

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 djbrow54
> 
> Here's my point for MIDI.  Consider it to be a simple serial
> communciations for expansion.  The programming overhead is nil and
> there is lots of flexibility.
> 
> You need more D/A's?  Connect it to a PAiA MIDI2CV.  Eight more 7 bit
> DAC's instantly available.  In running status mode, it only takes 2
> bytes for each DAC.  You can send an update to all 8 DACs in less than
> 200 uS of program execution time.  The actual serial  transmission
> will take ~5 mS.  Don't think 7 bits is enough?  Consider them digital
> outputs.  I have one program that drives twelve digital and one analog
> outputs.
> 
> Have two ComputerVoltageSources? MIDI sysex would allow expansion and
> intermodule communication. Want to control some external SDI devices?
> A $3 Atmel processor can easily convert MIDI sysex messages to SPI.
> How about some external relays? My favorite is vactrols to interface
> external signal processors.  I have a neat Ibanez digital delay that
> is only ~4 vactrols away from being interfaced to my PSIM.  I can
> daisy chain my two displays together via MIDI sysex to have a 2x20 and
> a 2x8 display simultaneous.  Delays do add up but are in the order of
> ~1 mS.
> 
> Consider the possibilities of MIDI as a future expandability
> mechanism.
>