Z axis not homing correctly - PLEASE HELP -- [SOLVED] May 11, 2016 11:05AM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 12:54PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 01:28PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 02:35PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 03:51PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 03:51PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 04:09PM |
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Re: Z axis not homing correctly - PLEASE HELP May 11, 2016 11:41PM |
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Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 05:47AM |
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Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 07:02AM |
Registered: 7 years ago Posts: 24 |
- I agree, however I am desperate enough to even take that route. But, I want to understand it and fix it without doing so if possible, so all help here is appreciated.Quote
orictosh
An update after watching your videos
[youtu.be]
when the nozzle is at the home position, grab upon paper 0.2mm
the lever of the z end stop switch (shown in the above link) should be just touching the printed part and show HIGH when triggered when printer is sent a M119
much the same as the x axis end stop
- I did that a couple of times already, but no luck. It always homes differently.
If the end stops are triggered "all the time" the axis won't move.
When triggered it should show high
- when an endstop is triggered, it does show high
The Z end stop is adjustable, you can move it up and down.
- yes
The way the z axis homes is this:
It's driven down until it hits the end stop, goes then just pass it, then comes up, at which point you should be able to get a "slight grab" upon a piece of paper
- My axis home as follows (x axis for example):
1. it moves towards the endstop until pressed
2. then it retracts a few mm, just for the endstop to open
3. then it does a second check triggering the endstop again
4. then it retracts a few mm again and notes that position as zero (the printed part is just touching the endstop lever)
When you watch the 3rd video, you can hear 2 clicks at x and y axis.
The trick is to place the end stop in the right place, so that a light touch is done on the print bed and it comes up to be the right height for a grab.
Printing this item from thingiverse makes the process much easier [www.thingiverse.com] and you can adjust the z-height with a screw driver
Further information here [reprap.org]
BEWARE, If end stop is too low you risk damage to the print bed, so be near the power switch so able to stop the motor
Uploading someone's config file could be a problem waiting to happen, I wouldn't advise it.
Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 07:32AM |
Registered: 9 years ago Posts: 189 |
Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 12:59PM |
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Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 04:37PM |
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Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 04:56PM |
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Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 06:08PM |
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Quote
bme
Did you change anything in your config file? Can you attache the configuration file again? The file which is in your atmega2560 now.
Here is the image of your config file:
Re: Z axis not homing correctly - PLEASE HELP May 12, 2016 11:32PM |
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Re: Z axis not homing correctly - PLEASE HELP May 13, 2016 01:16AM |
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Re: Z axis not homing correctly - PLEASE HELP May 13, 2016 01:54AM |
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Re: Z axis not homing correctly - PLEASE HELP May 13, 2016 03:04AM |
Registered: 9 years ago Posts: 189 |
Quote
bme
orictosh@ Can you explain to me what you mean by software?
Could it be something wrong in his configuration file. He has enabled EEPROM SET1?
Re: Z axis not homing correctly - PLEASE HELP May 13, 2016 05:46AM |
Registered: 7 years ago Posts: 24 |
- how do I check that?Quote
It could also be possible that the Z motors are missing steps due to low stepper voltage or they get desynchronized. That's a known problem with dual Z motor printers.
Re: Z axis not homing correctly - PLEASE HELP May 13, 2016 07:42PM |
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Re: Z axis not homing correctly - PLEASE HELP May 16, 2016 02:25AM |
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Re: Z axis not homing correctly - PLEASE HELP May 16, 2016 10:58AM |
Registered: 9 years ago Posts: 189 |
Quote
79dusan
Hi all,
I made a significant progress over the last weekend. Leveling the x axis by adjusting z motors with digital caliper has helped greatly as far as the entire bed leveling process goes. I also leveled the bed in a way that paper test was perfect in all 4 corners.
Next thing I need to do is to get even more drag on the paper (either by raising the bed or by setting a z offset - which is by far quicker).
Sometimes my z axis home flies away, but then after a couple of home commands, it is ok. Satisfactory. One thing I noticed is that seldom, x and y axis have the same problem. But that occurs like 1x in 50 homing commands. Could my Arduino be busted?
Quote
79dusan
I tried to print, but my ABS won´t stick to bed and there are countless threads on material sticking to bed. Not a big fan of acetone and ABS juice, I am going to try to put glass on my aluminium heat bed and apply UHU glue. If that fails, I am going to try hairspray.
Quote
79dusan
@vladek7
I´d like to have the same behavior as you have - only hitting the endstop means 0. Swapping endstops won´t do much magic as I just replaced z endstop before posting to the forum. Build instructions I got were saying I should have removed the metal lever from z endstop, so I did that. Experience was even worse, so I replaced it with a new endstop with the metal lever.
Re: Z axis not homing correctly - PLEASE HELP May 16, 2016 11:28AM |
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Re: Z axis not homing correctly - PLEASE HELP May 16, 2016 04:21PM |
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Re: Z axis not homing correctly - PLEASE HELP May 17, 2016 05:42AM |
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Re: Z axis not homing correctly - PLEASE HELP May 17, 2016 07:34AM |
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Re: Z axis not homing correctly - PLEASE HELP May 17, 2016 08:04AM |
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Re: Z axis not homing correctly - PLEASE HELP May 17, 2016 12:57PM |
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Quote
gforce1
Slow down your accellaration in the firmware.
Re: Z axis not homing correctly - PLEASE HELP May 17, 2016 04:22PM |
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