So I’m running 1.12 firmware and index. Loaded new yaml too and ran a new anchor location routine (more about that later). Nothing major off during the anchor point routine but after when I retract, raise the router to simulate a bit, set the z home and run a file the top right belt will pop randomly when moving. Direction doesn’t seem to matter. My retract and find anchor point is 800. Reliably retract at 800 and lower. Vertical orientation. The belts are not super tight nor super loose when moving. It’s not hitting anything like the belt guard or slipping. It’s like it’s being pulled too much by the other belts. The find anchor location routine the belts never pop anywhere on the grid. 2000x1000 9x9. Just when I raise the router. And the spoil set to 15mm and workpiece at 19mm and anchor routine ran with those values and physically in place. Running the speed of the file at 30 in a minute. When I watch the debug motor current page during the run there is nothing wrong that I can see. Tr and TL occasionally in the blue around 700. What do you think the issue could be. I’m not around my laptop right now or I’d send a serial and the gcode. I’ll try that to send those tomorrow. When the belt is popping I can gently pinch the belt and push it toward the arm and the popping stops. Thanks for the help
Woah! That’s interesting!
I’ve never seen anything like that before. You covered all my first guesses for what might be going on so I think you’ve done an excellent job identifying the likely causes.
How does it feel when that belt is extending? Does it feel smooth?
Could it be a damaged gear within the motor itself?
Belts feel smooth and steady when extending. I would assume that a damaged gear of some kind would give the condition all the time but with the z in the z stop position and the machine moving all around the workpiece it never pops. Just when I move the z to the home position and start a file. But pops in random places on the sheet some middle some edge, low and high. What’s strange if I can describe what I’m doing correctly is I pinch the belt and push it backwards towards the arms a little. Not even enough to make anything slack. I’ll try to video me doing it soon. Is it possible that a belt could be pulling on it too hard and me physically pushing the belt is effectively relieving some tension making it stop popping? Is there a setting I can play with the check/change the push/pull relationship?
Bar wrote:
I’ve never seen anything like that before. You covered all my first guesses for what might be going on so I think you’ve done an excellent job identifying the likely causes.
How does it feel when that belt is extending? Does it feel smooth?
Could it be a damaged gear within the motor itself?
I would try extending the belt all the way and then retracting it under slight
tension. If the belt is not reasonably snug on the spool, then under tension, it
could move a bit.
If this is the case, then I expect that it will mostly self correct after a
little use.
the good news is that since the machine measures actual belt movement instead of
just spool movement, it will know that too much belt went out and correct fairly
quickly.
David Lang
My machine has been it trouble shooting phase since late July. So belts have been well exercised, extended completely multiple times. The popping looks to be the belts pulled out of the spool not loose belt slipping past and the motor correcting for it. I would assume if it were a correction movement it would just do so not pop as if the spool is being pulled past the motor gear teeth. Anchor finding never pops. 2000x1000 9x9 800 retract and cal force belts taught but not really tight. Moves all over the board, corners ,top and bottom extremes. Motors only show about 700 ish when in the extremes so it’s not struggling. Only pops when moving after raising the z and setting the z home then running a file. And even then it’s random but seems as if the other belts are pulling the top left more than it’s putting out. Is there a setting that deals with force/speed the belts release or pull when moving?
bday wrote:
My machine has been it trouble shooting phase since late July. So belts have
been well exercised, extended completely multiple times. The popping looks to
be the belts pulled out of the spool not loose belt slipping past and the
motor correcting for it. I would assume if it were a correction movement it
would just do so not pop as if the spool is being pulled past the motor gear
teeth. Anchor finding never pops. 2000x1000 9x9 800 retract and cal force
belts taught but not really tight. Moves all over the board, corners ,top and
bottom extremes. Motors only show about 700 ish when in the extremes so it’s
not struggling. Only pops when moving after raising the z and setting the z
home then running a file. And even then it’s random but seems as if the other
belts are pulling the top left more than it’s putting out. Is there a setting
that deals with force/speed the belts release or pull when moving?
if the belt has become detached from the spool, you should be able to extend it
and have the belt come completely out.
David Lang
The belt is not detached. Is there a setting that tells the machine how much/fast to push/pull belts when the machine is moving.
bday wrote:
The belt is not detached. Is there a setting that tells the machine how
much/fast to push/pull belts when the machine is moving.
There is the feed rate for G1/G2/G3 commands, and a setting for G0/jogging
movement
David Lang
So there is no setting in the Maslow config I can change that will cover that? I’m not familiar with changing code and I’m sure that would need to be changed any file I would run?
bday wrote:
So there is no setting in the Maslow config I can change that will cover that?
I’m not familiar with changing code and I’m sure that would need to be changed
any file I would run?
the speed it moves while cutting is set in your gcode file. There is a setting
to set the max speed it tries to move a motor when not cutting, but @bar would
need to comment on what that is
David Lang
These settings will set how fast the machine moves when using the jog buttons, but I don’t think that’s what’s going on here.
The jumps are so sudden that it seems like it must be something mechanical. Do you see anything funny about that arm if you peak in the as it’s rotating?
I do not see anything weird but I’m going to change the TL motor and encoder to rule it out. I have a motor I bought a while back from the store for a spare. I wonder why it’s only popping when ruining a file. It doesn’t do it when running the anchor grid. Thanks for the help. I’ll change it out and report back.
no idea, I can’t find that in the source code.
David Lang
I’ve seen this too, refreshing the page seems to always fix it for me. I think it’s some communication thing between the browser and the machine