A standard cheap seq uses cheap pots from +5 to ground to get the CV out.
Problems are as follows
a) It can be hard to tune to a exact note over a 5 octave range with a cheap
pot
b) they drift with temperature. Since they are used ratiometric this is
minimized to a degree.
What I am looking at is a Greyhill optical encoder. It is small, like the
black Spectrol pots I use now. It
is sealed. It outputs 256 pulses per revolution, nice and clean. And, (this
is the SEX part) it has a built-in
pushbutton integrated with the shaft! You push the shaft in about 1/16" and
it clicks like a mouse button!
If fact, this is the model they used: spin the knob, and click to set the
value. I LOVE this stuff!!
Of course, it is NOT cheap. If I buy 500 at a time, the cost to ME is about
$14 each. YEP! $14 EACH!!!!!!
But they are good for 5 MILLION rotations and the built-in button is just to
cool for words.
Paul S.
-----Original Message-----
From: Gur Milstein <
gur-m@...>
To:
motm@onelist.com <
motm@onelist.com>
Date: Saturday, April 03, 1999 6:34 PM
Subject: [motm] Re: MOTM up date
>From: Gur Milstein <gur-m@...>
>
>Paul.
>please explain more about the sequencer desighn problem,why would
>quality components would make an analog sequencer better ?
>is it only the pots drift problem or are ther any other importent
>aspects ?
>
>thanx
>Gur Milstein
>
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