Pot or Encoder type for 7i77

Andy,

Thank you for the example. I got it to work. I was failing initially at the basics of loading the software encoder. I was not entirely following how the software encoder numbers differ from the hardware encoders and tried increasing the wrong count for the mesa encoders.
Can you look over the modifications I made and see if the servo thread is correct or if it should be base thread? It didn't load with addf encoder.0 servo-thread. Also, is there a way to get the override to be something other than 10% increments? I'd like to be closer to 1% so I can fine tune the feed rate better.



# connect jog wheel feed-override dial

loadrt encoder num_chan=2
#addf encoder.0 servo-thread
addf encoder.capture-position servo-thread
#addf encoder.update-counters base-thread
addf encoder.update-counters servo-thread
setp encoder.0.x4-mode 1

net fo-chanA hm2_5i25.0.7i77.0.0.input-00 => encoder.0.phase-A
net fo-chanB hm2_5i25.0.7i77.0.0.input-01 => encoder.0.phase-B

net output encoder.0.counts => halui.feed-override.counts
setp halui.feed-override.count-enable 1


######

# connect jog wheel max velocity-override dial does not exist???####

#setp encoder.1.x4-mode 1

#net mvo-chanA hm2_5i25.0.7i77.0.0.input-02 => encoder.1.phase-A
#net mvo-chanB hm2_5i25.0.7i77.0.0.input-03 => encoder.1.phase-B

#net mvo-output encoder.1.counts => halui.max-velocity-override.counts
#setp halui.max-velocity-override.count-enable 1

#######

# connect jog wheel rapid-override dial #

setp encoder.1.x4-mode 1

net ro-chanA hm2_5i25.0.7i77.0.0.input-02 => encoder.1.phase-A
net ro-chanB hm2_5i25.0.7i77.0.0.input-03 => encoder.1.phase-B

net ro-output encoder.1.counts => halui.rapid-override.counts
setp halui.rapid-override.count-enable 1


I was also trying to add a max velocity override which doesn't exist? Anyway, It's pretty cool to see the gui sliders adjust based on the jog pendant. Thanks for the help!

Thanks Andy for looking it over. Works great.

For anyone else following along learning, I figured out how to set the override scale. That was rather easy.
Just add:

setp halui.feed-override.scale 0.02

And change the number to whatever you like. If you leave that line out, it out it was at 10% per dial click.

Hello OT

Its sounds like you are happy with using an encoder for feed rate override. Which one of the two you mentioned earlier in your post did you go with? I believe the difference is 16 pulses per rev or 36 pulses per rev. It seems they have no rotational stops. Do they have a tactile detent or are they smooth?

I went with the Grayhill 25LB10-Q. It's an encoder type with 10 degree detent and no end stops. They have a nice feel. The knobs are sold separate and come in different styles and sizes.You can probably find cheaper ones that work just as well.