Bed Auto Leveling.. check this out

Bed Auto Leveling.. check this out Hi Guys, I have upmerged the larsbrubaker Bed Auto Leveling code to the latest Marlin version... It makes the printer setup and operation way easier!! check these videos: System demonstration: http://www.youtube.com/watch?v=3IKMeOYz-1Q (English subtitles available) Printing in a really uneven bed: http://www.youtube.com/watch?v=x8eqSQNAyro Do you want this amazing feature?? https://github.com/alexborro/Marlin Best regards. Alex. https://reprap.org/forum/read.php?151,246132,246132#msg-246132 Sun, 14 Jun 2026 00:55:28 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?151,246132,702685#msg-702685 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,702685#msg-702685

Quote
23chaos23
ok so ive got myself the marlin firmware and im wondering if it will work on my GT2560 board, it uses the same mega 2560 chip and it says its based on a ramps board so in the code do i define the board as a ramps 14 efb or can i set a custom definition for the gt2560? really need a hand with this if anyone could jump on skype and give me a hand that would be awesome

Seems like it should. Even though the board has the Mega and Ramps combined, the various tools should not need to care. So for the Arduino IDE, I would set it to a Mega 2560 board, and for Configuration.h, set it for a Ramps 1.4.]]> brucehvn General Mendel Topics Tue, 23 Aug 2016 07:02:09 -0400 https://reprap.org/forum/read.php?151,246132,702629#msg-702629 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,702629#msg-702629 Anonymous User General Mendel Topics Tue, 23 Aug 2016 01:26:56 -0400 https://reprap.org/forum/read.php?151,246132,701851#msg-701851 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,701851#msg-701851 Anonymous User General Mendel Topics Fri, 19 Aug 2016 05:59:56 -0400 https://reprap.org/forum/read.php?151,246132,701675#msg-701675 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,701675#msg-701675 stephenrc General Mendel Topics Thu, 18 Aug 2016 12:24:42 -0400 https://reprap.org/forum/read.php?151,246132,701529#msg-701529 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,701529#msg-701529 Anonymous User General Mendel Topics Wed, 17 Aug 2016 22:46:09 -0400 https://reprap.org/forum/read.php?151,246132,701441#msg-701441 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,701441#msg-701441 miscsolutions.wordpress.com]

Grab the current Marlin RC from [github.com] and install the current Arduino IDE. In Marlin's configuration.h, edit the usual settings, uncomment the AUTO_BED_LEVELING_FEATURE to enable bed leveling, set the x, y, & z offsets, and set the probe points. You should also uncomment and set the parts for safe z homing. Read the comments in configuration.h for info on this.]]> stephenrc General Mendel Topics Wed, 17 Aug 2016 11:35:05 -0400 https://reprap.org/forum/read.php?151,246132,700548#msg-700548 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,700548#msg-700548
my printer is a fully DIY design built with Open builds frame work. using 2 Nema 23s for Z and 17s for X,Y and the 2 extruders (Geeetech MK8 dual extruder)

all controlled with a GT2560 the board is based on a ramps board and is running on a marlin firmware by what i can find out. hoping someone that knows these things better then me could help me set up the auto bed leveling on my GT2560

the last time dealt with an arduino based board was when i changed the firmware on a micro quad, but that was a full firmware change, ive never made a discrete change to a existing code.
[drive.google.com]]]> Anonymous User General Mendel Topics Tue, 16 Aug 2016 23:16:52 -0400 https://reprap.org/forum/read.php?151,246132,692927#msg-692927 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,692927#msg-692927

Quote
RiaanLR
I have sorted my problem. The best way to learn in live is via trial and error.

In Marlin I had to change one of my speed settings from 5 to 3. The z axis could not get down fast enough and got stuck.

#define DEFAULT_MAX_FEEDRATE {500, 500, 3, 25} // (mm/sec)

Riaan

you are a genius, i had the same issue and with your mod i solved it.

Thanks!!]]> Lean04 General Mendel Topics Sun, 31 Jul 2016 01:01:11 -0400 https://reprap.org/forum/read.php?151,246132,692926#msg-692926 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,692926#msg-692926 Lean04 General Mendel Topics Sun, 31 Jul 2016 00:55:55 -0400 https://reprap.org/forum/read.php?151,246132,595232#msg-595232 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,595232#msg-595232 Any ideas ?]]> kubik1980 General Mendel Topics Thu, 10 Dec 2015 18:29:40 -0500 https://reprap.org/forum/read.php?151,246132,595177#msg-595177 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,595177#msg-595177 here is the log for 5
G29 Auto Bed Leveling
26.98 16.99 7.00 -42.97 -72.94
46.96 36.97 26.97 16.98 6.99
46.96 56.95 66.94 76.93 86.93
126.90 116.90 106.91 96.92 86.93
206.84 176.86 126.90 116.90 106.91]]> kubik1980 General Mendel Topics Thu, 10 Dec 2015 15:24:11 -0500 https://reprap.org/forum/read.php?151,246132,595162#msg-595162 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,595162#msg-595162 stephenrc General Mendel Topics Thu, 10 Dec 2015 14:53:57 -0500 https://reprap.org/forum/read.php?151,246132,595143#msg-595143 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,595143#msg-595143 I have build a Delta kossel and nearly everything is working.
I have problems with the autoleveling when i run a G30 it works fine, but when I use the G29 it al goes to ****
here is the code I get from my 27 point (know it is a lot :))
Bed X: 28.000 Y: -74.000 Z: 9.995
Bed X: 22.000 Y: -74.000 Z: 19.985
Bed X: 16.000 Y: -74.000 Z: 29.975
Bed X: 10.000 Y: -74.000 Z: 39.965
Bed X: 4.000 Y: -74.000 Z: 49.955
Bed X: -2.000 Y: -74.000 Z: 59.945
Bed X: -8.000 Y: -74.000 Z: 69.940
Bed X: -14.000 Y: -74.000 Z: 79.935
Bed X: -20.000 Y: -74.000 Z: 89.930
Bed X: -26.000 Y: -74.000 Z: 99.925
Bed X: -38.000 Y: -68.000 Z: 109.915
Bed X: -32.000 Y: -68.000 Z: 119.905
Bed X: -26.000 Y: -68.000 Z: 129.895
Bed X: -20.000 Y: -68.000 Z: 139.885
Bed X: -14.000 Y: -68.000 Z: 149.875
Bed X: -8.000 Y: -68.000 Z: 159.865
Bed X: -2.000 Y: -68.000 Z: 169.855
Bed X: 4.000 Y: -68.000 Z: 179.850
Bed X: 10.000 Y: -68.000 Z: 189.845
Bed X: 16.000 Y: -68.000 Z: 199.840
Bed X: 22.000 Y: -68.000 Z: 209.835
Bed X: 28.000 Y: -68.000 Z: 219.830
Bed X: 34.000 Y: -68.000 Z: 229.825
Bed X: 40.000 Y: -68.000 Z: 239.820
Bed X: 46.000 Y: -62.000 Z: 249.810
Bed X: 40.000 Y: -62.000 Z: 259.800
Bed X: 34.000 Y: -62.000 Z: 269.790
Bed X: 28.000 Y: -62.000 Z: 279.780
Bed X: 22.000 Y: -62.000 Z: 289.770
Bed X: 16.000 Y: -62.000 Z: 299.760
Bed X: 10.000 Y: -62.000 Z: 309.750
Bed X: 4.000 Y: -62.000 Z: 319.740
Bed X: -2.000 Y: -62.000 Z: 329.730
Bed X: -8.000 Y: -62.000 Z: 339.725
Bed X: -14.000 Y: -62.000 Z: 349.720
Bed X: -20.000 Y: -62.000 Z: 359.715
Bed X: -26.000 Y: -62.000 Z: 369.710
Bed X: -32.000 Y: -62.000 Z: 379.705

I also attach my Configuration and my marlin main
I really hope you can help me.]]> kubik1980 General Mendel Topics Thu, 10 Dec 2015 14:04:53 -0500 https://reprap.org/forum/read.php?151,246132,575582#msg-575582 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,575582#msg-575582
I'll try out the 3x3 grid and be done with it if it works.

thanks,
Michael]]> mhackney General Mendel Topics Mon, 26 Oct 2015 11:29:50 -0400 https://reprap.org/forum/read.php?151,246132,575463#msg-575463 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,575463#msg-575463
I think most of the newer Marlin versions still feature it, the one I was using (1.0.2) had it, but it's not the default method, so I did need to uncomment/comment a few lines to get it working in configuration.h.

I didn't have much luck with it, but my problems were caused by un-level Y rails which was causing a 'twist' effect and stopping the levelling algorithm from working.

I did also try manually bed levelling which worked better, even with my un-level setup, and if you have EEPROM enabled you can save the probing back to memory so it doesn't need to be performed every time.

I did spend a few hours getting everything straight and level to quite a high accuracy and I'm using auto bed levelling with a 3x3 grid and getting consistent prints every time.

Cheers

Sean.]]> Astek777 General Mendel Topics Mon, 26 Oct 2015 07:30:57 -0400 https://reprap.org/forum/read.php?151,246132,574604#msg-574604 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,574604#msg-574604
This thread started off with exactly what I'd like to do but I've found references that this was taken out of Marlin, that it's still in Marlin, etc. Does anyone have a definitive answer on whether 3 point is supported in any branch or recent version? If not recent, what is the best working earlier version?

thanks!
Michael]]> mhackney General Mendel Topics Fri, 23 Oct 2015 19:04:21 -0400 https://reprap.org/forum/read.php?151,246132,546999#msg-546999 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546999#msg-546999 Brainscan General Mendel Topics Tue, 18 Aug 2015 10:09:19 -0400 https://reprap.org/forum/read.php?151,246132,546741#msg-546741 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546741#msg-546741
I am using a mechanical endstop, the probe provides consistent readings. Running out of options to try, i can remember the last time i had a successful print any bigger than 1" square.

Alex

EDIT: I have since read that post fully and have also responded in there.]]> xelad General Mendel Topics Mon, 17 Aug 2015 16:55:43 -0400 https://reprap.org/forum/read.php?151,246132,546603#msg-546603 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546603#msg-546603
If you go here:
[3dprintboard.com]

There's a lot of information about auto levelling. On page 48(ish) there's a download of Marlin which has all the Advanced G29 stuff already installed. It seems to be a quite well tested version and Roxy, the person who developed it, provides some fantastic support, as you'll see from my recent posts on there.

My issues haven't been fixed yet, but your problems aren't necessarily the same as mine, even though they sound similar, but it might be useful to rule out the software side of things.

Also, ensure your 'probe offsets' are correct. Obviously the position of your probe isn't where your extruder actually is, so these need to be correct.

Good luck!]]> Astek777 General Mendel Topics Mon, 17 Aug 2015 10:43:26 -0400 https://reprap.org/forum/read.php?151,246132,546596#msg-546596 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546596#msg-546596
Thanks for the feedback, when i get back from work i will gather the data you have mentioned and report back. I am also unsure of what version of marlin i am using, to be sure i am going to download the latest version, apply my settings and install onto the printer tonight.

I will update as i progress.

Thanks

Alex]]> xelad General Mendel Topics Mon, 17 Aug 2015 10:23:06 -0400 https://reprap.org/forum/read.php?151,246132,546590#msg-546590 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546590#msg-546590
Welcome to my world! :-)

Just out of interest, which corners are high and which are low? Currently my front left (nearest X0Y0) is too low and the right front is too far away. My readings are also spot on and very repeatable.

Depending upon which version of Marlin you have installed you can get a topography map using the G29 command, but you need to have 'Advanced G29' installed, or a newer version of Marlin.

Try 'G28', followed by 'G29 V4 T n5'. This should scan a 5x5 square and give you the offsets that the 'auto levelling' uses to offset it's measurements. You can repeat this a few times (make sure you start with 'G28' each time to reset the previous map), and see how consistent your results are.

Are you using a capacitive sensor or other method?

Just so you know my printer is still off. Just about to try a simply 3 point plane and then start taking some of my X and Y construction apart to see if I can find anything that is warped.

As far as I was aware, and from what I've seen with some purposely wonky print beds, the auto bed levelling, if working correct and having scanned enough points, should be able to compensate for this, but I'm not getting it...yet.

Cheers

Sean.]]> Astek777 General Mendel Topics Mon, 17 Aug 2015 10:02:10 -0400 https://reprap.org/forum/read.php?151,246132,546563#msg-546563 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,546563#msg-546563
Any advice is greatly appreciated.

Thanks

Alex]]> xelad General Mendel Topics Mon, 17 Aug 2015 08:57:38 -0400 https://reprap.org/forum/read.php?151,246132,544639#msg-544639 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,544639#msg-544639
I updated the config and installed. The advanced G29 is much better with the feedback it can provide.

I also managed to make a quick change to Marlin_main.cpp to raise the Z axis when 'G28' is called to clear the print bed brackets before homing x and y. If anyone is interested I added:

if(home_all_axis)
{
do_blocking_move_relative(0, 0, Z_RAISE_BEFORE_HOMING);
destination[Z_AXIS] += Z_RAISE_BEFORE_HOMING;
}

...directly after the line...

home_all_axis = !((code_seen(axis_codes[X_AXIS])) || (code_seen(axis_codes[Y_AXIS])) || (code_seen(axis_codes[Z_AXIS])));

However, the new firmware doesn't seem to have made any different to my print quality.

My bed was pretty level before, maybe a mm out across the whole bed, which is why I thought it wasn't working at all. I've tried to make my print bed particularly wonky now, so I'm probably 3mm out in one corner just to see what would happen. It does appear the z distortion map is working to a degree, it's just not as perfect as I would hope considering the readings from the capacitive sensor are so accurate and repeatable. I'm basically getting the same results regardless of how off my print bed is. The extruder is roughly following the level of the print bed, but it seems to be high and low at various places. Maybe I'm just expecting too much?

I'm also getting a strange clicking (every couple of seconds) and slight shuddering on the two z-axis steppers now as they slowly try and adjust.]]> Astek777 General Mendel Topics Tue, 11 Aug 2015 13:21:56 -0400 https://reprap.org/forum/read.php?151,246132,544557#msg-544557 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,544557#msg-544557
Once it's set correctly it does work beautifully though, I get consistent first layers every time. Before that I was lucky if half of my prints worked first time. I use a capacitance sensor too and found it much more reliable than servos.]]> Brainscan General Mendel Topics Tue, 11 Aug 2015 09:24:31 -0400 https://reprap.org/forum/read.php?151,246132,544510#msg-544510 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,544510#msg-544510
I assume your auto-levelling works a treat then? Which version of Marlin are you using then? Any link to the GitHub download fork you used...there seems to be hundreds of versions now. I don't mind if it's older...I just want something stable with auto-bed levelling working.

I'm pretty sure the hardware side of what I've done is working OK, so it's either firmware or simply configuration.]]> Astek777 General Mendel Topics Tue, 11 Aug 2015 07:26:04 -0400 https://reprap.org/forum/read.php?151,246132,544509#msg-544509 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,544509#msg-544509 Brainscan General Mendel Topics Tue, 11 Aug 2015 07:21:32 -0400 https://reprap.org/forum/read.php?151,246132,544491#msg-544491 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,544491#msg-544491
Using Marlin v1.0.2 and although G28 followed by G29 seem to be doing the right things, the actual print doesn't seem to be taking it in to account. Here's my start G-Code:

G91 ; switch to relative positioning
G1 Z10 ; safe raise of z axis to ensure probe doesn't hit bed clamp
G90 ; switch back to absolute positioning
G28 ; home all axes
G29 ; level print bed

I'm checking 9 points and the Z offsets looks sensible (ranging from -0.09 to 0.62), and they are repeatable if I run G28 followed by G29 multiple times (+- 0.01).

I'm currently just trying to print a calibration piece (see attached) but this is where the problem starts, as the left hand side of the print is too close, and is resulting in a smear of plastic, the right hand side of the print is a millimetre or more too high so the filament is just being dropped on.

Anybody had any similar issues? I have tried a couple of different firmware versions in case it's a bug in the Z offset map, but they all seem to produce the exact same results. Can anybody recommend a firmware they know works?

Whilst printing, I can see the Z-Axis slowly rotating back-and-forth, so it obviously thinks it's doing what it should.

Any help or suggestions gratefully received. I've attached my configuration.h in case it's any use.

Thanks!!]]> Astek777 General Mendel Topics Tue, 11 Aug 2015 05:52:24 -0400 https://reprap.org/forum/read.php?151,246132,543738#msg-543738 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,543738#msg-543738
G1 X0 Y0 F4000
G1 Z1

this got me printing perfect on the bed, if I enable raise after probing, it print at the height you defined in the firmware after probing, I can't yet find another way around it]]> deaconfrost General Mendel Topics Sat, 08 Aug 2015 18:14:20 -0400 https://reprap.org/forum/read.php?151,246132,539850#msg-539850 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,539850#msg-539850

Quote
Akegata
I'm trying to set up bed leveling as per Thomas Sanladerers video (https://youtu.be/EcGFLwj0pnA), using a LJ12A3-4-Z/BY sensor.
I've soldered the cables to the proper resistors, however, I can't get readings that make any sense from it.

I get readings fluctuating between 6v and 11v no matter if the sensor is opened or closed.
When I only connect power and ground without any resistors, I get 12v/0.5v, so it seems like the sensor is working.
Does anyone have any idea what could be wrong?

It's a bit hard to see everything in the picture, but that's what the connections looks like.

Never mind this. I picked up an LM7805. Works perfectly.]]> Akegata General Mendel Topics Thu, 30 Jul 2015 13:25:04 -0400 https://reprap.org/forum/read.php?151,246132,539780#msg-539780 Re: Bed Auto Leveling.. check this out https://reprap.org/forum/read.php?151,246132,539780#msg-539780 I've soldered the cables to the proper resistors, however, I can't get readings that make any sense from it.

I get readings fluctuating between 6v and 11v no matter if the sensor is opened or closed.
When I only connect power and ground without any resistors, I get 12v/0.5v, so it seems like the sensor is working.
Does anyone have any idea what could be wrong?

It's a bit hard to see everything in the picture, but that's what the connections looks like.]]> Akegata General Mendel Topics Thu, 30 Jul 2015 10:07:12 -0400