MIDI Controllable Pots

[John Speth]

Have you looked at the digital pots (that is if you would consider a 
digital solution)?  If my memory is accurate, these generally are 
controlled via some 3 wire serial interface and they range in resolution 
from 32 steps to 256 (and maybe more?).  Good luck finding non-SMD parts 
though.

John Speth
Object Engineering, Inc
mailto:johns at oei.com

On Monday, October 18, 1999 9:35 AM, Andy Main [SMTP:mainas at aston.ac.uk] 
wrote:
> Hi all,
>
> Carring on with my ASM1 design, I'm still trying to work out how to
> implement the pots located on the front panel with MIDI control.  My
> guess is to have a knob sending out grey code depending on position,
> link this via logic to a DAC and then control a FET as a voltage
> controlled resistor.
>
> Has anyone tried to do this before?  Or are there better solutions (I'm
> sure I can't be the only one who has wanted to do this).