analog sequencer memory

[Stewart Pye]

At 01:51 31/10/98 +0000, Gur Milstein wrote:
>hi guy's.
>i want to know if any body ever build a computer based analog sequencer,
>i mean an analog seq with patern memory ,or a module computer based
>that can record and play seq paterns ?
>all so i have the serge intruduction book which have a mod for computer
>interfacing using AIM,KIM,APPLE,OSI OR RADIO SHACK computer
>to the serge system,did any body did it or know where i can get
>instruction on how to do it ?
>
>thanx
>Gur Milstein
> 

Sorry, I haven't built one yet but it will be my next micro project.

The way to do it would be with a microcontroller. ( I use 8031 ). 
Scan any swiches you might want for note on etc. Read the value off 16 pots
with an A/D, with this value being switchable between different channels
and note/velocity etc. (save money on pots). Store these values in ram.
Upon each 1/16 note clock pulse output the note/vel values to a D/A. BTW
the 8031 has built in UART so you can sync to midi clock if desired.
To be really fancy you can use an lcd and keypad to select what program you
want.

Hopefully this will all happen one day soon and I'll let you know how it went.