[sdiy] Rotary Encoder Question

[Paul Maddox]

Steve,

Long time no talk, hope you are well...

> It's the type that has two outputs - one produces pulses (or opens/closes
> switch contacts) when rotated in one direction and the other output does
> the same when the encoder is rotated in the opposite direction.
>
> Most incremental encoders I've found on the web seem only to produce
> quadrature pulses which are not suitable for a MIDI controller I have
> in mind.

this is the case for most of these.
however you can cheat ;-

http://pages.zoom.co.uk/andyc/

click on electronics and look at the top circuit..

useing a D type flipflop...
Tie one output of the Rotary encoder to D, one to Clk...
Now use the one tied to clock as your RATE of turn, the Q output now gives
you direction, either 0 or 1!

Simple..

Paul
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