[sdiy] Digital control

[mark verbos]

The Jomox MBase01 is a bassdrum  module. It is basically a modified 909 
circuit, but with MIDI control of everything and patch memory. The 
circuit is implimented with a PIC and digital POTs.  It should work fine.

Mark

Johannes Öberg wrote:

>I'm thinking about building some simple analog FX modules, mainly a
>compressor and a filter. However, I would really like digital control
>over them; at least patch memory. What's the simplest/cheapest way of
>implementing this? I have some experience with PIC programming, so I
>guess what I need help on are some digitally controlled resistors or
>something, to replace the pots.
>
>Sorry if this is a silly question but I don't know much about analog
>circuitry. I guess I could use digital potentiometer IC's but all I've
>found seem quite expensive and offer very poor resolution. I'm hoping
>there are some DIY circuits. I wouldn't need fast settling times or
>anything as I only intend to replace semi-static pots with digital
>control (like attack and release knobs etc. on a compressor).
>
>Greets
>/Johannes
>
>  
>