Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 HI know little bit on the marlin firmware. i have a selfbuild machine based on the reprap - prusa I have ramps 14 board on the mega 2560 i got he 2.1.2 firmware at a point where is does work on the servo and the auto home.. now on the bed leveling it is working on #define AUTO_BED_LEVELING_BILINEAR (recommended on the google searches done - if better on please suggest) but with the above it tires to level right on the edge on the build plate. i not shure how to add the off sets that it move say 10mm away from the edge of the build plate on the 9 z probe positions.. you help will be really appreciated attached is both the config of the old version 1.0.0 nmarlin that does work on the bed leveling bit on the 2.1.2. vesion does on the edge please help see attached files https://reprap.org/forum/read.php?415,896332,896332#msg-896332 Sun, 19 Jul 2026 23:39:47 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?415,896332,896419#msg-896419 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896419#msg-896419
i have most sorted, but 2 issues

1. on the heat bed i have 6mm glass on the bead and take really long to heat up the marlin times out on error, is there any setting on the is to set that the check on heat can be prolonged the time check ? when i heat the bed without the glass i do not ge the halt error... hope someone has some fix for this
2. on the z offset, i have done now manually on the LCD to do the z off set bit even saving it on a -8.1mm or -7.3 when printing the hight of the the offset seems to stay +1.7 constant above the bed so im unsure how to more twek this so the the offset is correct to do the fist layer correct

been really frustrating month and bit so long trying to get this fixed.. hope someone can help on this..

thx in advance]]> uuys007 Firmware - Marlin Wed, 15 Jan 2025 04:35:32 -0500 https://reprap.org/forum/read.php?415,896332,896390#msg-896390 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896390#msg-896390
is this correct as i had it saved via the lcd panel and it stays there the changes]]> uuys007 Firmware - Marlin Mon, 06 Jan 2025 07:41:13 -0500 https://reprap.org/forum/read.php?415,896332,896384#msg-896384 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896384#msg-896384 Dust Firmware - Marlin Sun, 05 Jan 2025 08:45:52 -0500 https://reprap.org/forum/read.php?415,896332,896372#msg-896372 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896372#msg-896372
not doing the offset ??

any ideas

see attached is manually entered via the LCD screen direct on the printer]]> uuys007 Firmware - Marlin Fri, 03 Jan 2025 17:45:59 -0500 https://reprap.org/forum/read.php?415,896332,896371#msg-896371 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896371#msg-896371 uuys007 Firmware - Marlin Fri, 03 Jan 2025 16:27:28 -0500 https://reprap.org/forum/read.php?415,896332,896370#msg-896370 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896370#msg-896370
done this on the code changed from 10 to 25

#define PROBING_MARGIN 25



but the #define NOZZLE_TO_PROBE_OFFSET { 37, 2, 0 } as if this is not doing any offset

still keep the nozzle in the middle not on the offset so the bed level is to the right going off the bed when doing the bed leveling

you value input will be appreciated]]> uuys007 Firmware - Marlin Fri, 03 Jan 2025 16:26:39 -0500 https://reprap.org/forum/read.php?415,896332,896360#msg-896360 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896360#msg-896360 uuys007 Firmware - Marlin Fri, 03 Jan 2025 05:23:16 -0500 https://reprap.org/forum/read.php?415,896332,896349#msg-896349 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896349#msg-896349
with the correct measurement the offset..

hence why im asking Q on this forum, as with v1.0.0 al working but in need to upgrade sure it will give me better prints with all the advances..

hop you can shine more light on the subject..]]> uuys007 Firmware - Marlin Tue, 31 Dec 2024 09:07:48 -0500 https://reprap.org/forum/read.php?415,896332,896348#msg-896348 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896348#msg-896348


Quote
Dust
check these are correct

#define X_MIN_POS 0
#define Y_MIN_POS 0

These are your home positions

Ie When you home X, the X endstop trigger point sets where X0 is for the hotend , if the hotend is actually left of the bed X_MIN_POS should be a negative number, so moving the positive of that value will nove to X0

When you home Y, the Y endstop position point sets where Y0 is for the hotend. if the hotend is two far forward then Y_MIN_POS should be a negative number, so moving the positive of that value will nove to Y0

You also need to set #define NOZZLE_TO_PROBE_OFFSET { 10, 10, 0 } correctly
Is you probe exactly 10mm to the right of the hotend and back 10mm from the hotend? The picture seems to show your probe in in front of the hotend,so that would be NOZZLE_TO_PROBE_OFFSET { 10, -10, 0 } but with correct measurements

Please do as requested.]]> Dust Firmware - Marlin Tue, 31 Dec 2024 02:33:26 -0500 https://reprap.org/forum/read.php?415,896332,896347#msg-896347 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896347#msg-896347
i have check this yes is in my configuration.h , this is the absolute boundaries of the heat-bed and mine is 0 yes, but my question is how to setup the bed-leveling that the sensor does not read at the absolute limits but go say offset 15x15 inward on the heat-bed to do the measurements..

I need to know where to add the line of code in the configuration.h so that the sensor does not run out over the edge of the heat-bed.

hope this make sense]]> uuys007 Firmware - Marlin Tue, 31 Dec 2024 02:25:39 -0500 https://reprap.org/forum/read.php?415,896332,896344#msg-896344 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896344#msg-896344
Quote
Dust
It is in the Configuration.h file on Lines 1731 and 1732


see [github.com]

Wow! Dust!! I did not know you could do what you just did I will remember this...
Now can post the links like that. No reason to copy and past ever thing just a simple link.

Major Thanks]]> Roberts_Clif Firmware - Marlin Sat, 28 Dec 2024 20:33:38 -0500 https://reprap.org/forum/read.php?415,896332,896343#msg-896343 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896343#msg-896343

see [github.com]]]> Dust Firmware - Marlin Sat, 28 Dec 2024 18:18:08 -0500 https://reprap.org/forum/read.php?415,896332,896341#msg-896341 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896341#msg-896341 uuys007 Firmware - Marlin Sat, 28 Dec 2024 11:30:48 -0500 https://reprap.org/forum/read.php?415,896332,896340#msg-896340 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896340#msg-896340 uuys007 Firmware - Marlin Sat, 28 Dec 2024 11:10:50 -0500 https://reprap.org/forum/read.php?415,896332,896339#msg-896339 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896339#msg-896339 uuys007 Firmware - Marlin Sat, 28 Dec 2024 11:10:04 -0500 https://reprap.org/forum/read.php?415,896332,896338#msg-896338 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896338#msg-896338
Searching text files for a string is a very basic computer skill.]]> Dust Firmware - Marlin Sat, 28 Dec 2024 05:29:34 -0500 https://reprap.org/forum/read.php?415,896332,896337#msg-896337 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896337#msg-896337 uuys007 Firmware - Marlin Sat, 28 Dec 2024 03:30:55 -0500 https://reprap.org/forum/read.php?415,896332,896336#msg-896336 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896336#msg-896336 #define Y_MIN_POS 0

where do i finf this in version 2.1.2.x]]> uuys007 Firmware - Marlin Fri, 27 Dec 2024 16:11:24 -0500 https://reprap.org/forum/read.php?415,896332,896334#msg-896334 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896334#msg-896334
#define X_MIN_POS 0
#define Y_MIN_POS 0

These are your home positions

Ie When you home X, the X endstop trigger point sets where X0 is for the hotend , if the hotend is actually left of the bed X_MIN_POS should be a negative number, so moving the positive of that value will nove to X0

When you home Y, the Y endstop position point sets where Y0 is for the hotend. if the hotend is two far forward then Y_MIN_POS should be a negative number, so moving the positive of that value will nove to Y0

You also need to set #define NOZZLE_TO_PROBE_OFFSET { 10, 10, 0 } correctly
Is you probe exactly 10mm to the right of the hotend and back 10mm from the hotend? The picture seems to show your probe in in front of the hotend,so that would be NOZZLE_TO_PROBE_OFFSET { 10, -10, 0 } but with correct measurements]]> Dust Firmware - Marlin Fri, 27 Dec 2024 05:11:23 -0500 https://reprap.org/forum/read.php?415,896332,896333#msg-896333 Re: Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896333#msg-896333 uuys007 Firmware - Marlin Fri, 27 Dec 2024 03:27:41 -0500 https://reprap.org/forum/read.php?415,896332,896332#msg-896332 Bed Leveling marlin 2.1.2.x upgrade from marlin 1.0.0 to 2.1.2 https://reprap.org/forum/read.php?415,896332,896332#msg-896332
know little bit on the marlin firmware.

i have a selfbuild machine based on the reprap - prusa

I have ramps 14 board on the mega 2560


i got he 2.1.2 firmware at a point where is does work on the servo and the auto home..

now on the bed leveling

it is working

on #define AUTO_BED_LEVELING_BILINEAR (recommended on the google searches done - if better on please suggest)

but with the above it tires to level right on the edge on the build plate.

i not shure how to add the off sets that it move say 10mm away from the edge of the build plate on the 9 z probe positions..

you help will be really appreciated

attached is both the config of the old version 1.0.0 nmarlin that does work on the bed leveling bit on the 2.1.2. vesion does on the edge

please help

see attached files]]> uuys007 Firmware - Marlin Fri, 27 Dec 2024 03:27:16 -0500