40+80 = 120
Change the -80 to something that makes more sense (-54).
Edit: Somehow Julien answered before me… With all those words!
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Awesome thanks guys.
I need to customize a pendant for the Raspberry Pi official 7" screen. The mini one I found is a bit basic. Shopfloor might be a good starting point.
Is there a way to auto execute macros, without a popup? I’d love to copy CMs change tool workflow which needs 1 interaction (after loading new tool). From the looks of it out of the box with cncjs, there’s a few more interactions required.
Another question for the C3D folks, would it be possible to get a CNCjs thread that doesn’t auto-close? It would be nice to have a consolidated area for information.
I’m not aware of such a possibility, there would probably be some CNCjs code modification involved.
All threads auto-close after a while, but should you need to reopen any given thread to post fresh information, just PM Will or myself.
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Ok thanks. A few more questions I’ll keep em coming 
For feedhold, is it possible to customize the action? Would like to stop the spindle at least.
Feedhold behavior is hardcoded in GRBL, but…it does stop the spindle.
You meant spindle as in the thing connected to a VFD, not the trim router right? (Because of course there is no way to stop a trim router other than manually, unless one uses a BitRunner)
What behavior do you see?
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I’m using BitRunner.
Hitting pause on CNCJS does not stop the spindle. Just stops all movement.
That’s what “Pause” is designed to do. I think you’ll have to modify the source of either CNCjs (a bit tricky, but not very risky) or grbl (much simpler, but a bit unadvised if you’re not comfortable).
One idea is that you could have a side process running alongside CNCjs that behaves similar to a custom pendant.
If you connect to the websocket, I believe you get an event on pause and should be able to stop the spindle as appropriate.
Ok I may have been confused : you were talking about feedhold,
But then mentioned hitting “Pause”:
Are you talking about the Pause icon that’s in between the “Play” and “Stop” icons ?
Or are you using the “Feedhold” button up top ?
The Pause button will just halt movement indeed, but the Feedhold button will trigger a full-blown feedhold sequence, and that’s going to retract and stop the spindle (more details than you would ever care for are available in this thread)
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Love the details!
So essentially, feed hold is completely defined by the firmware, and I should see the same behaviour as Carbide Motion?
The feed hold button in the CNCJs interface wasn’t visible on my Pi display due to resizing I guess. Another reason to wire up a button soon!
I might take a step back from CNCjs. I think it’s really awesome, and I was looking forward to maybe some stored offsets/etc, as well as customizing a few other things (jogging travel speeds)
However, the amount of effort to build a custom widget/pendant to get what I want is a few days of machining time The tool change in Carbide Motion is too good compared to cncjs. Perhaps a winter project will be making some code contributions.
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Yep, it’s GRBL doing all the heavy lifting when it receives the feedhold character, whoever sends it.
I chose to wire up a button since for me feedhold is for “half-emergency” cases, and I’d rather slam a button than have to grab the mouse, move a pointer over a button, and click 
This is precisely why I enjoy using both: CM is great for USING the machine and provides a guided workflow to do that for folks who do not want to hear about nitty gritty G-code details, while CNCjs on the does not come with any specific workflow but one can use the bits and pieces (macros, etc…) to make their own (which also has value).
I have been down the “hey what if I wrote code for a CNCjs pendant” road, and while I don’t regret it because I enjoy geeky activities, it is certainly not the best use of one’s shop time indeed
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Bingo I love the IDEA of having a slick touch screen pendant. One button sets my Z0 to the top of the spoilboard. Another sets X0Y0 to a corner square. etc. Current RPM is interpolated to a # on the Makita dial.
I don’t like the thought of all the javascript to get to that point
That said, am I best to disable soft-limits if using CM?
For a long while the answer was “yes”, because CM has/had internal soft limits of its own.
I admit to not checking whether with the more recent versions of CM that allow one to define machine travel limits, this still makes sense, and whether soft limits are (still) disabled in the default configuration…
Soft-limits are disabled in default config, as in setting up CNCJS I saw that they were and had to enable them.
I can give it a go and worst case, the machine will stop/error out. When this happen, does CM disconnect from the grbl board?
disconnect, no, but it may not allow you to resume the current job after the soft limit error happens (I can’t remember for sure), so at the end of the day it’s not very different from a disconnect.
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Why use the existing button when you can modify the source code?
Those buttons are easy to overlook, @Julien.
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(subtitles for this private joke slash gentle roasting: I used CNCjs for a good two years before Neil pointed me to those “feedhold” and “cycle start” buttons at the top of the screen…they must be rendered in camouflage pixels or something )
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