Re: Paul was right

At 11:54 AM 7/24/97 -0700, you wrote:
>One last thought.. Couldn't you do a quadrature to Grey encoder in
>a 22V10, just by clocking the device with one of the quadrature inputs
>and sampling the other quadrature input, or would you need some
>filtering on the optical inputs as well to keep the clock input from
>jittering?
>
>I was looking at Bryan's Omega Race encoder again, and the way it
>works is he has an oscillator sampling the interrupter inputs, then
>applies those two bits as inputs to a prom/register state machine
>which saves the previous state and goes to one of four new states
>based on the input.

Yeah the clock keeps everything sychronuous, without it you'd have a wild
oscillator.
>
>If someone ever did a new rotary encoder board for the Sega games,
>you could probably scrunch the D flop,counter, buffer down to one
>22v10 as well..
>
>(and have an input for setting the number of pulses per revolution..)

Or a single PIC!

(Just had to say that before Clay did! ;^)

-Zonn
Received on Thu Jul 24 13:12:19 1997