Initial 6 axis Support #1384

tsmarks · 2020-04-15T05:09:40Z

Added basic 6 axis features: DRO, Control
Added a 4th axis roughing strategy

As requested by creator, the DRO and Control panes can be removed/activated in the bCNC.ini file line: control.page = DRO abcDRO State Control abcControl

Initial 6 Axis support. Modified __main__.py, bCNC.ini, CNC.py, and ControlPage.py

Updated _GenericController, GRBL0 and GRBL1 Not sure if GRBL0 is needed

Simple rotary roughing operation

Fix to ensure 3 axis controllers are not effected

There are no current 6 axis grbl 0.x releases. No need to alter this file from original

Harvie · 2020-04-15T06:28:33Z

Hello, thanks for your contribution. I still have to review the code, but i've tried to start your 6-Axis bCNC on my computer in both python2 and 3 and it seems to work. I also like the way you've separated additional axes into collapsible sections. Can you make it collapsed by default, so 3 axis users don't see it unless they click on it? So by default i looks like that:

tsmarks · 2020-04-15T06:35:11Z

Thanks. I just added the extra axis to my machine and have been working on software to support it. The first fix was reworking the grbl post processor for Fusion 360. Now I figured get this GUI to support the basics.

I can look into that the default state. I would assume, it would be even better to have the default bCNC.ini set to not display them at all. Let the minority that want the 6 axis edit the ini to add them back in.

13: control.page = DRO abcDRO State Control abcControl
if it is:
13: control.page = DRO State Control
they don't show at all

Harvie · 2020-04-15T07:12:34Z

Let the minority that want the 6 axis edit the ini to add them back in.

Good idea...

Harvie · 2020-04-16T15:03:23Z

BTW what is displayed on the canvas when you load 6 axis g-code into bCNC? I guess that might be a problem...

tsmarks · 2020-04-16T16:19:37Z

The visualization ignores the extra axis moves. So for 4th axis operations you see a 2d profile of all the moves parallel to the rotary and up and down in Z. It is useful for locating the job. Fusion 360 struggles to visualize multi-axis in the simulation too. I have thought about attacking the issue, but I fear it might be more resource intensive than people want bCNC to be. The canvas would need to be a true 3d viewer to really make it work.

Harvie · 2020-04-16T22:23:15Z

I fear it might be more resource intensive than people want bCNC to be. The canvas would need to be a true 3d viewer to really make it work.

Oh yes. These are two greatest problems of bCNC... I am considering porting it to OpenGL or something... But i am not really sure how to do it and if it can help. Some people say that even with OpenGL it will be still slow, because drawed shapes are preprocessed in python anyway...

MARIOBASZ · 2020-04-17T01:02:19Z

Very good tool to be able to handle 6 axes, soon I will add rotary axes to my machine, so I hope to use what you have done, thank you very much !!
The bcnc canvas is certainly a critical point (trochoidal use, the gcode have too many lines, it gets too slow, and / or graphics incomplete).
Regards.

tsmarks · 2020-04-17T16:24:52Z

Mario,

I used a Arduino Mega with the Andy's CNC shield from Eccentric Workshop as a breakout and the GRBL build he provided too. I had to rewrite Fusion 360's GRBL post processor to work with multi-axis, but now everything works well. I have a few posts over on the Fusion forum with the new post processor if you want the code. I have successfully made a few 4th axis projects, but really needed this bCNC change to make it work smooth. Hand jamming gcode for moving and zeroing the 4th was not friendly and having no DRO was a pain. (Not insulting bCNC, VERY happy with it, and thankful for the code being opensource.)

MARIOBASZ · 2020-04-17T17:01:21Z

@tsmarks, I have on my pc still not using a version of grbl 6 axes for mega, fusion360 I have not used it yet ... all my objects have been designed with bcnc. Another advance for bcnc to be able to handle 6 axes.

I think that if you add in the dro to be able to choose, when it is commanded with the direction arrows, if the movement is G0 (like now) or G1, it can be useful, for example to go cutting almost manually. Hugs.

Harvie · 2020-04-17T17:32:14Z

Can you please add some config checkbox for enabling 6axis mode? So i can merge this...

Harvie · 2020-04-17T17:40:20Z

Maybe it would make sense to add few mentions of 6axis capability to wiki. You should have write access:
https://github.com/vlachoudis/bCNC/wiki

tsmarks · 2020-04-19T05:07:46Z

I have added the check box in the config. I also added a few blurbs in the Wiki and added apage for the Spiral plugin.

Thanks for your interest in this.

Harvie · 2020-04-19T11:27:05Z

Looks good to me, i will merge this. Do you have something you want to add before merge?

walterwissmann · 2020-04-19T15:51:15Z

Many thanks to all to let more axis come to bCNC!

Walter

tsmarks · 2020-04-21T03:37:20Z

Harvie,
I can't think of anything. If anything come up I will revisit. Thanks!

Harvie · 2020-04-21T06:42:23Z

Thank you for usefull feature! I hope the GUI will get bit more streamlined in the future. But i've never really worked on 6-axis machine, so i am not really aware about how that should look to be ergonomic...

TNO-CODE · 2020-04-21T07:34:26Z

Thank you from the bottom of my heart 💓 .
Thanks to everyone who had input with this ,can't wait to try more Axis as I've already ordered the parts .

Harvie · 2020-05-31T13:19:17Z

There is bug report claiming this had broken GRBLv1 compatibility... Can you please check it?
#1407

Harvie · 2020-06-24T09:34:45Z

@tsmarks also can you please take a look at this? #1426

sttts · 2020-08-09T19:10:43Z

bCNC/controllers/_GenericController.py

-STATUSPAT = re.compile(r"^<(\w*?),MPos:([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),WPos:([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),?(.*)>$")
-POSPAT	  = re.compile(r"^\[(...):([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*):?(\d*)\]$")
+STATUSPAT = re.compile(r"^<(\w*?),MPos:([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),WPos:([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),?(.*)>$")
+POSPAT	  = re.compile(r"^\[(...):([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*),([+\-]?\d*\.\d*):?(\d*)\]$")


the new groups in the pattern are non-optional, aren't they? With my GRBL I get [PRB:-356.0,-5.28,-118.3,0.0:1], i.e. only 4 axes. What do I miss?

Actually, even the old pattern with only 3 coordinates is broken with my 4 axes GRBL.

Are you able to provide PR with fix please?

Not tested yet.

Spent the afternoon hunting issues with z probing, giving wrong values. I hope this is was the root cause. Going to try now on real machine.

Initial 6 axis Support

tsmarks added 14 commits April 14, 2020 23:58

Added 6 Axis Controls

d087eeb

Delete CNC.py

69501aa

Delete ControlPage.py

71546c6

Delete __main__.py

1e6a054

Delete bCNC.ini

6a84281

Added 6 Axis Support

a67cedd

Initial 6 Axis support. Modified __main__.py, bCNC.ini, CNC.py, and ControlPage.py

Add 6 Axis Support

eb870a6

Updated _GenericController, GRBL0 and GRBL1 Not sure if GRBL0 is needed

New Plugin for 4th Axis rotary work

c9dac04

Simple rotary roughing operation

Added a config field to keep 3 axis correct

e1d1935

Made 6 axis words optional

c04ce4a

Fix to ensure 3 axis controllers are not effected

Back to original

f60793d

There are no current 6 axis grbl 0.x releases. No need to alter this file from original

Fixed tab/space error for Travis CI error

72f6b02

Typo - in notes

3904bc3

Fixed other optional 6 axis words to keep 3 axis safe

23e2611

Harvie added more than 3 axes user interface labels Apr 15, 2020

Allow swapping between 3/6 axis machine w/o edit of ini

be17bac

Defualt to 3 axis display

4a64409

Harvie added the documentation needed label Apr 17, 2020

tsmarks added 2 commits April 18, 2020 23:20

Added checkbox to enable 6 axis displays

d6eeeee

Update ToolsPage.py

fe3b7cf

Harvie merged commit ebc5b85 into vlachoudis:master Apr 21, 2020

Harvie added a commit to Harvie/bCNC that referenced this pull request Apr 21, 2020

pypi bump, 6axis changelof vlachoudis#1384

b49b2d4

Harvie mentioned this pull request May 31, 2020

"Garbage receive MPos" on Status Request with "?" #1407

Open

Harvie mentioned this pull request Jun 14, 2020

Question 4th axis #1134

Closed

sttts reviewed Aug 9, 2020

View reviewed changes

sttts mentioned this pull request Aug 9, 2020

Fix POSPAT & STATUSPAT to match non-6-axes GRBL output #1441

Merged

rar8000 pushed a commit to rar8000/bCNC that referenced this pull request Jul 21, 2023

Merge pull request vlachoudis#1384 from tsmarks/master

91f4b1f

Initial 6 axis Support

rar8000 pushed a commit to rar8000/bCNC that referenced this pull request Jul 21, 2023

pypi bump, 6axis changelof vlachoudis#1384

ea1d857

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Initial 6 axis Support #1384

Initial 6 axis Support #1384

tsmarks commented Apr 15, 2020 •

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Initial 6 axis Support #1384

Initial 6 axis Support #1384

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