DX7 controls.

[bj]

The Old Crow wrote:

>   Back in 1986, I built an outboard system that provided a realtime knob
> or switch for every DX7 parameter.  The device was rather large (it was
> built into a desk!), but worked quite well.  I called it the DX
> Patchmaster. ^^  It was comprised of seven seperate modules, each of which
> dropped into the sloping panel behind the desk surface on which the DX7
> under torture was placed.  Six of the modules were identical, one for each
> operator.  The seventh provided the remaining functions, and also acted as
> the router for the serial interfaces on the other six modules.  (The
> system was built so that any given module could work in a standalone
> fashion, connected to the synth via an RS-232->MIDI converter).
> 
>   I sold the whole mess in 1990 to a college synth lab.  I do have the
> extra operator module I made somewhere around here; I might take a pic of
> it and slap it on the website as a memento of times past.
> 
>   And yes, it was a good idea. ^^

Did you have a separate MCU/CPU for the scanning if the pots?
Or did you make the pot scan from a PC?

BJ