Here's an interesting approach:
http://www.hut.fi/~jwagner/electr/rotary-enc/
I have a small 'pancake' stepper that puts out 128 pulses per revolution and
it's silky smooth

Joe
W3JDR


"Ed" wrote in message
...
Glad to hear about these encoders; is it possible to have info on
manufacturer
to buy one? Ed.

xpyttl wrote:

"Ed." wrote in message
...
From my point of view, a VFO completely independant of the personnal
computer
is desirable. This can be done with a PIC or other microprocessor with
2
thumbwheel switches for 99 channels (or frequencies) or a two digit
display
with up and down selection buttons. Ed!

While encoders can be found for upwards of fifty bucks, plenty of
encoders
that do a much nicer job than thumbwheel switches cost barely more than
two.
And why would you use a two digit display when a nice 8 digit LCD can be
had
for around five bucks, less if you're willing to hunt around. This
stuff
may have made sense when it was all going to be lashed together with
7400
series logic chips, but with a PIC or other processor, the encoder and
LCD
display is a lot easier, and usually cheaper, to say nothing of nicer.

..

Here's an interesting approach:
http://www.hut.fi/~jwagner/electr/rotary-enc/
I have a small 'pancake' stepper that puts out 128 pulses per revolution and
it's silky smooth

Joe
W3JDR


"Ed" wrote in message
...
Glad to hear about these encoders; is it possible to have info on
manufacturer
to buy one? Ed.

xpyttl wrote:

"Ed." wrote in message
...
From my point of view, a VFO completely independant of the personnal
computer
is desirable. This can be done with a PIC or other microprocessor with
2
thumbwheel switches for 99 channels (or frequencies) or a two digit
display
with up and down selection buttons. Ed!

While encoders can be found for upwards of fifty bucks, plenty of
encoders
that do a much nicer job than thumbwheel switches cost barely more than
two.
And why would you use a two digit display when a nice 8 digit LCD can be
had
for around five bucks, less if you're willing to hunt around. This
stuff
may have made sense when it was all going to be lashed together with
7400
series logic chips, but with a PIC or other processor, the encoder and
LCD
display is a lot easier, and usually cheaper, to say nothing of nicer.

..