On 7/12/21 8:59 AM, Leonardo Marsaglia wrote:
That was actually what I was looking for, a button "like that", and
wondered if I just didn't see/find it.
Yeah I can see some "convenient" functionality in that, but being able
to go "half way" between two points, even with some iteration would
help, to get that started
(It would be really easy, math wise, once you have something like that,
to find the center of a circular hole, or a rectangle, or anything
symmetrical, basically)
I wonder, in hal, with a plugin, if you can just move the tool/spindle,
and the DRO screen shows where it is going. For example, for finding
the center of a circular hole, you'd only need to find the edge in 3
spots, and then just "go there".
I'd love to figure out how to write a plugin like that.
Well If you want to use an electronic probe tool to automatically stop at
contact I think the use of HAL is unavoidable since the probe input is a
part of the MOTION component of LinuxCNC. You'll also have to make fancy
G-CODE as John said with this approach since you're gonna need to deal with
digital outputs and delays to make the routine.
right, and I don't know if I want to go that route, if there's a simpler
one.
If you plan to externalize
the probing or if you plan to use a wiggle edge finder, you can still use
HAL to manually set the points with a button as we talked earlier.
that was orinallt the 'question' I had in mind. Something simple with a
few buttons, that can do some simple calculations. But if it's already
there, I just haven't found it yet.
I am not that experienced using LCNC/Axis, and don't have a lot of time
to 'play' with it (it's that paycheck commitment thing :) )
As Andy suggests, there are plenty of GUI(ed) ways to do this also, but I'm
so comfortable with HAL that I really don't mess around too much at GUI
level. (That's a big to do on my list)
If you have some C programming knowledge I think you will be more than alright
making your custom component to try this.
Actually, been programming in C for a few decades, on all kinds of
platforms. Question, as always is, where to get started? Is there some
sort of "skeleton", a frame that shows what it should look like, with
some trivial functionality?
For example, if you want to write a linux daemon, you can use a
"skeleton", that basically show some of that, and with already
existing coding skills, you can write your own functioning daemon.
So if there is something like that for LCNC/Axis, I'd give that a shot.
I myself am pretty far
from being a programmer and I could do a lot of custom components with the HAL
Component Generator <http://linuxcnc.org/docs/2.8/html/hal/comp.html> for
the machines I have here.
Any help you need please feel free to ask :)
Well, is there a spot where I can find some examples, of that what you
mentioned?
Ron
El lun, 12 jul 2021 a las 5:20, andy pugh (<bodge...@gmail.com>) escribió:
(Nothing quoted, as this is general info)
If you have a probe, then there is a hole centre macro that ships with
LinuxCNC, "probe-hole.ngc"
That will work without any config changes.
There is a fairly complete set of probe routines included in the
distribution which are included in the QTDragon and Woodpecker QTVcp
GUIs at least.
(There is a lot going on with QTVcp, it seems, and it is passing me by)
In the venerable "Axis" interface you can spoof a fair bit of what is
being talked about here in the touch-off dialog as it will accept
mathematical expressions in the box.
So, you can type in the current DRO reading and halve it ( 1.234 / 2
). I believe that any valig G-code expression will work: (sin[60] / 2
for example)
It would be handy to be able to use axis letters in there, and feels
like an easy thing to add. I would not be at all surprised to find
that some of the newer GUIs allow exactly that.
This touch-off behaviour will be GUI-specific, and I doubt that anyone
is intimately familiar with more than a couple of GUIs.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912
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