Corexy movement Help
Posted by dthomas6184
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Corexy movement Help November 10, 2016 01:29AM |
Registered: 8 years ago Posts: 29 |
I've finally got my printer rdoing motion tests but I've run into an issue. When I home the x or y the gantry only moves front to back and its super slow and choppy about it. I must have done something wrong, I'm running a ramps/Mega combo with repetier (set for corexy). I have pictures and video of the setup and it moving but but the site won't let me upload. any idea of what I could have done wrong?
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Re: Corexy movement Help November 10, 2016 04:39AM |
Registered: 9 years ago Posts: 346 |
Hi,
you can upload the video on youtube and them post the link here. For images you have a option to put some photos in this forum, check the "attach a file" option.
If you upload a video it will be a lot more easy to help you.
but normally the type of problem you have can be many things, where a possible list of the cause:
-low voltage on the steppers
-bad build, the carriage need to mutch force to be moved correctly by the motors.
-incorrect connections of the motors on the ramps, this because you say it move only front to back.
-incorrect homing velocity on the firmware.
you can upload the video on youtube and them post the link here. For images you have a option to put some photos in this forum, check the "attach a file" option.
If you upload a video it will be a lot more easy to help you.
but normally the type of problem you have can be many things, where a possible list of the cause:
-low voltage on the steppers
-bad build, the carriage need to mutch force to be moved correctly by the motors.
-incorrect connections of the motors on the ramps, this because you say it move only front to back.
-incorrect homing velocity on the firmware.
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Re: Corexy movement Help November 10, 2016 07:49AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 10, 2016 08:00AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 10, 2016 08:39AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 10, 2016 09:05AM |
Registered: 9 years ago Posts: 346 |
hi,
I think the problem is because you have one of the motors not corretly connected. Put a photo where i is possible to see the color cable of the motor connecting in the ramps board.
after solving this issue you need to add more tension on the belts.
Edited 1 time(s). Last edit at 11/10/2016 09:24AM by filipeCampos.
I think the problem is because you have one of the motors not corretly connected. Put a photo where i is possible to see the color cable of the motor connecting in the ramps board.
after solving this issue you need to add more tension on the belts.
Edited 1 time(s). Last edit at 11/10/2016 09:24AM by filipeCampos.
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Re: Corexy movement Help November 10, 2016 09:56AM |
Registered: 12 years ago Posts: 5,796 |
Two things:
It looks like the left side belt is flopping around a lot. Both belts should be tight.
Turn the phone sideways when you're shooting video.
Does the mechanism move smoothly when the belts are off? If not, fix it.
Check the cables between the motors and the controllers.
Edited 1 time(s). Last edit at 11/10/2016 04:18PM by the_digital_dentist.
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
It looks like the left side belt is flopping around a lot. Both belts should be tight.
Turn the phone sideways when you're shooting video.
Does the mechanism move smoothly when the belts are off? If not, fix it.
Check the cables between the motors and the controllers.
Edited 1 time(s). Last edit at 11/10/2016 04:18PM by the_digital_dentist.
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
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Re: Corexy movement Help November 10, 2016 09:56AM |
Registered: 9 years ago Posts: 251 |
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Re: Corexy movement Help November 10, 2016 10:29AM |
Registered: 8 years ago Posts: 29 |
I did tighten up the belts last night but it was to late for me to try it out, the noise is the body panels rattling... right now they are only being held together by duct tape. The gantry moves good when I move it by hand (with and without the belts).
the motor wire colors are orange, blue, yellow, red. They have some random extensions on them temporarily so I can sit the whole thing on a table and not have it hanging. they are both connected with the orange wire pointed toward the polyfuses.
Edited 1 time(s). Last edit at 11/10/2016 10:29AM by dthomas6184.
the motor wire colors are orange, blue, yellow, red. They have some random extensions on them temporarily so I can sit the whole thing on a table and not have it hanging. they are both connected with the orange wire pointed toward the polyfuses.
Edited 1 time(s). Last edit at 11/10/2016 10:29AM by dthomas6184.
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Re: Corexy movement Help November 10, 2016 11:17AM |
Registered: 9 years ago Posts: 251 |
Def. try again with tightened belts. If you have a multimeter check the voltage on the drivers and make sure they aren't too low or too high.
Are the motors moving they way they are supposed to? I mean when you tell it to go left/right/back/forward does it actually goes left/right/back/forward?
Are the motors moving they way they are supposed to? I mean when you tell it to go left/right/back/forward does it actually goes left/right/back/forward?
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Re: Corexy movement Help November 10, 2016 11:17AM |
Registered: 9 years ago Posts: 346 |
checked again the video and i think is not wiring problem where you could have not connect corrtly the 2 coils of each motor. if is was this the motor will simply not turn.
on the video both motors turn on oposite side, but the turn is not smooth.
- you can check the voltage of both steepers, must be somewhere 0.7v to 1v
- on the belt twist the teeths of each belt do not touchs?
post a better video where you move the carriage only in one direction and where is possible to see uplose the motor running, belt path, etc..
on the video both motors turn on oposite side, but the turn is not smooth.
- you can check the voltage of both steepers, must be somewhere 0.7v to 1v
- on the belt twist the teeths of each belt do not touchs?
post a better video where you move the carriage only in one direction and where is possible to see uplose the motor running, belt path, etc..
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Re: Corexy movement Help November 10, 2016 11:34AM |
Registered: 8 years ago Posts: 558 |
I've had similar issues and noise to what you show in the video. In my case, 1 of the 4 stepper wires from the X and Y motors was not making good contact. It causes it to have a grindy sound with similar motion to what is in your video around 0:37. I ended up re-crimping the connectors on both ends and not seen the issue since on my systems.
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Re: Corexy movement Help November 10, 2016 11:37AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 10, 2016 01:34PM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 10, 2016 02:15PM |
Registered: 9 years ago Posts: 251 |
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Re: Corexy movement Help November 16, 2016 12:22AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 16, 2016 12:24AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 16, 2016 04:12AM |
Registered: 9 years ago Posts: 346 |
this value are low. Increase the voltage of both up to 1v, then test is solved to problem. If it was solved this way you need then to ajust better the voltage decreasing slowlly until the carriage stop to move corretly again, then finally add 0.2V. Normally adding only 0.1V in the final step will be enouth, but your carriage is still empty, so go with 0.2V
PS: if you do not have a not condutor screw drive do no not change the voltage of the stepper with the ramps connected to the eletricity.
Edited 1 time(s). Last edit at 11/16/2016 04:14AM by filipeCampos.
PS: if you do not have a not condutor screw drive do no not change the voltage of the stepper with the ramps connected to the eletricity.
Edited 1 time(s). Last edit at 11/16/2016 04:14AM by filipeCampos.
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Re: Corexy movement Help November 16, 2016 05:57AM |
Registered: 8 years ago Posts: 29 |
I think I might have smoked my RAMPS with a stupid endstop. I plugged them in to test, the board came on just fine and cycled the motors just fine then I hit one of the endstop and the whole thing goes dead and won't come back. I checked the voltage at the powersupply input and I get a 12v reading but when I check the voltage at the stepper drivers it's gone down to .2.
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Re: Corexy movement Help November 16, 2016 06:30AM |
Admin Registered: 17 years ago Posts: 13,999 |
... seems you've put the endstop the wrong way round and shorted your +5V support - replacing the 5V-regulator could help ...
Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]
Call for the project "garbage-free seas" - [reprap.org]
Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]
Call for the project "garbage-free seas" - [reprap.org]
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Re: Corexy movement Help November 16, 2016 07:32AM |
Registered: 12 years ago Posts: 5,796 |
The loud noise is just the machine attempting to run the carriage past the end stop. Any machine will make loud noise when you do that. It seems to run pretty smoothly when you aren't slamming it against a wall. I think it will be fine once you have the end stops sorted out.
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
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Re: Corexy movement Help November 16, 2016 11:35AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 16, 2016 12:23PM |
Registered: 9 years ago Posts: 251 |
Quote
dthomas6184
yeah, I have to reconfigure the firmware for the printer, its running a basic repetier setup just to test the motion. As for the endstops, I have 3 leads red, black, and green. I had them plugged in with the red facing the edge of the board and the green facing the stepper drivers.
Flip them around, that is the incorrect way. Red should be facing the the drivers.
[www.reprap.org]
Edited 1 time(s). Last edit at 11/16/2016 12:24PM by widespreaddeadhead.
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Re: Corexy movement Help November 16, 2016 01:51PM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 17, 2016 12:28AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 18, 2016 09:30AM |
Registered: 9 years ago Posts: 251 |
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Re: Corexy movement Help November 18, 2016 10:28AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 18, 2016 11:24AM |
Registered: 9 years ago Posts: 251 |
For the X and Y, I guess it depends on what you have in your firmware. My firmware is configured to use the full range for the X and Y, which for me is 220X200, even though I only have a 200x200 bed. However, if your firmware is set for just 200x200 in the X and Y, you can just place the endstops at min or max so that your nozzle just meets the corner of your bed, which if your facing the printer back left would be 0,0 Just make sure you have them set correctly in the firmware as max or min.
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Re: Corexy movement Help November 18, 2016 11:57AM |
Registered: 8 years ago Posts: 29 |
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Re: Corexy movement Help November 18, 2016 12:29PM |
Registered: 9 years ago Posts: 251 |
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