Change jog speed while jogging?

Andy, there should be something more than just saying thanks (if we all bought you a beer it would probably be somewhere between a 40 semitrailer full or quite possibly a container ship…!).

I’m just blown away by the years of support you have given. Not limited to just you, I could make a list of the others and I just might. It’s been such an interesting journey reading through the years of postings. Yesterday I found cncnoob1979 Bridgeport retrofit, his panel seemed to be what I was aiming for so I started reading it from the beginning. I found he had nearly all the identical speed bumps I have had. I was staring at his z-axis jog speed control .hal code trying hard to get my head around the mux components when you replied pointing me to the exact spot in the wki for clear info.


Anyway, Success! I’ve got it working on one test axis. I’m using the mux component, I figure I need to get some level of competence with that component before going into your even better suggestion.

I’m now curious if I could expand this mux type selection to include a separate set of jog speeds for each axis. My two rotary axes (b&c) rapid jog speeds are very different from each other and also from xyz. I’m thinking of two selector switches, one for selecting axis and the other selecting the jog speed to use on the selected axis. It’s similar to a standard MPG setup, the difference is that each axis has its own 3 speeds that differ from the others. Now that I’ve written it out it seems there must away to do this because the rotary axis use different units than the linear ones.

If you had a gut feel on whether this it’s a go or a no-go that would be enough for me.

I think its best that I plan a spot on the panel for the selector switch.

Have great evening. Wish I could buy you that beer
-Doug

After sleeping on it (sort of sleeping).. It would be a drag to haft to use the axis selector switch. I think I can figure out a way to expand on the existing mux jog speed selection to have each jog button go to a set of jog speeds.
-Doug

Doug Crews wrote: I’m now curious if I could expand this mux type selection to include a separate set of jog speeds for each axis. My two rotary axes (b&c) rapid jog speeds are very different from each other and also from xyz. I’m thinking of two selector switches, one for selecting axis and the other selecting the jog speed to use on the selected axis. It’s similar to a standard MPG setup, the difference is that each axis has its own 3 speeds that differ from the others.

No need for the axis selector. You can use the same selector to drive two or more mux components, each sending the appropriate jog speed to each axis.

So perhaps mux.0 outputs 1,10,100 to X, Y and Z and mux.1 outputs 0.1, 1, 10 to axis A and B. Both sets of mux-select inputs can be connected to the same driving HAL pins, and each mux output can be connected to more than one axis jog input.

(HAL supports fan-out but not fan-in)