[sdiy] replacing step incrementor/decrementor with continuous pot

[Christian Hofmann]

On Tue, 20 Mar 2001 17:07:51 +0000
Emmanuel AMADIO <emmanuel at postimpressions.co.uk> wrote:

> Shouldn't be to hard using a rotary encoder with a bit of logic to recreate
> the up and down from the increment/decrement
> or whatever of the rotary encoder.
> Basically the rotary encoder has 3 digital output which varies in gray code I
> think, so you can determine if you
> increment or decrement or don't change using probably only logic gates.

Hi,
basically this may be possible - but it might not work as expected,
because the key panel scanning software's debouncing method may be
confused by pulses arriving faster than a normal human operator can
generate. 
Debouncing is kind of a logical low pass filter, and it probably is
designed to reject fast bouncing spikes, but pass through repeated
button depressions.
Hard to say what will be the maximum rate for the encoder generated
pulses that will be accepted.

regards
Christian