If you don't mind, please post a log. But at the moment XYZ are all disabled. Hope someone has an answer for this. It would also be much better to have a parameter on G1 that activated the M211 S0 state, such as an "I" parameter as is used for M43 when you want to ignore the restrictions of protected pins. This command is intended for developers and is not … If they do not match then the kit will not work correctly. Procedure to get this value: Hi, I have allready tried, but I did not find a solution. Is a public "shoutouts" channel a good or bad idea? If not maybe this should be considered to reduce the effect of signal noise specially when using z probe designs that induce considerable noise into the measurements. swapped the config.h and obtained that in the rcbugfix. tell me what you need to help me guys ! But once I get the Delta's up and running, I'm going to bring up the Grid Based ABL correction on top of the High Resolution Mesh correction. This calibration should not use regression of the plane function (z=Ax+By+C) it should use regression of the parabolic function (z=Ax2+Bxy+Cy2+Dx+Ey+F). G28 is as confusing to people who do not want to home the printer and G1 is confusing to people who do not want to move the print-head. If you are using our latest Marlin 1.1.8 firmware, you can adjust the z-offset with the babystep z function. How does Z offset (M851) work with an auto leveling sensor?Does it add the Z offset to the offset of the G29 mesh? but when I set it to +4mm and re run my print and it's the same it means something else is wrong!. The Z-axis offset, or Z-offset for short, is the distance from the top of the heated bed washers (defined as “zero”) to the tip of the hot end nozzle. i go on vacation tommrow guys. If you've gotten this far, horray! THEN I have to run a G92 in the hopes that it saves the correct position for my users to manually level the bed in the next menu. 3. That feature was seldom used, so it was hijacked for use as a delta height offset. I need some suggestions for a z offset issue. My Hardware: Mendel90 Lasercut from www.think3dp So I executed "M851 Z-1.09" and saved this value with "M500". The whole process is very messy. after installing the MKS Gen L and TMC 2208 on my Ender 3, everythings fine, but adjusting the Z-Offset over the LCD Display doesnt affect anything. However, after sending G92 Z0, NOTHING will move and no errors were generated. I understand what you are saying. 1. test if you can send manually a G1 Z100 F6000 and if that moves. Raise Z and deploy the probe. If yes, can you be more specific in the way you did please ? Having to force them to set the z offset blind, or run a second probe after finding the offset number is a deterrent to safe operation. Z has to be accurate and has to be adjusted quite accurately. i will test what happen with a G29 before. G92, therefore, fractures the steps and counts into two separate entities. Now I have to go into my parser and manually mute the echoes for M211, and the twofold (toggled) usage is messy to implement and a small error could allow the call to M211 S1 to be missed when finished with M211 S0 state. 4. When you power up it displays the settings that are being used so you can easily verify if things are changing or not. not having n stops would help determine the value I set it to. Z_offset does not change the Z=0 position. I have no bed levelling enabled at all. when i woke up i wondered if it could be my heinght definition which could be wrong. Printers without a cup or bowl potential (or delta printers if they are known to have minimal (less than 0.1mm) cup or bowl issue) can use robust regression to a plane. I wouldn't be surprised if there are repeat-ability issues when you are probing near the edge of the bed. :). What need I to do to get the nozzle right for the 1st layer? If you can do it with the z-offset please let me know. I cannot imagine why that would be a good thing or why we would be restricted from setting our own values. Suddenly I got an offset of -1.29! I have scoured around a bit, and I am still not 100% sure on what I should be looking out for when configuring my Volcano Z-offset. At which place in the delta levelling is LSF in use? 1.1.6 babystepping with M851 (Z-offset) not working as expected, https://marlinfw.org/docs/gcode/G092.html. G92 Z0 ;terminal ack ok After you change it, you must re-probe. Or is there a Gcode for manually adjusting software endstops? Successfully merging a pull request may close this issue. Move Z down slowly until the probe triggers. After you change it, you must re-probe to use the new value. All wrapped in a series of G90/G91 layers. I use marlin 2.0.7.2 I have 2mm belts and 17tooth pulley on X, 20tooth pulley on Y. I do not know my driver but the Z works fine if I assume 32usteps so my calculation give: X = 188.24 ustep/mm Y = 160 ustep/mm But when I measure approximately, I get 61mm displacement in X instead 100mm (and I must measure again for Y). my log of m111/g29/g28 and print then reset. i will postthe results soon. Background: Right now for the sake of stability we're reverting some recent additions and taking zprobe_zoffset back to Simpletown, where nothing outside of a single probe knows about zprobe_zoffset. PRs that do this by cannot be accepted. i dont understand what the z offset is for so, z_offset if primarily for the Mesh Bed Leveling schemes to adjust the distance from the Mesh to the nozzle. G92 seems like a logical place to put it. A correction in the code(*) is needed for G33 P0 to work; it is confusing that G33 P1 and larger works but G33 P0 doesn't. Adjusting the Z-Offset over Octoprint is working. G1 Z-1 ;moves to -1 This behavior is unwarranted, and easily recitified by resetting the count OR passing an automatic G1 to the endstop in lieu of locking up the whole machine. Just to clarify what behavior is actually observed: M211 S0 Marlin told me a Z offset of -1.09. At the very end of the log, notice that the correction to Z only amounts to -0.06mm (From 15.00 to 14.94), not enough to mess with the first layer assuming a more-or-less flat bed. is it worth that i bothered config it ? It doesn't care about the n stops. for people who calibrate manually (either by probing certain points or doing papertests) and are configuring the delta parameters manually, it is of their choice to set the delta height manually as well to tune the print height of the 1st layer. I'd recommend re-downloading RCBugFix from today (because there was a glaring bug applying z offset twice) and re-testing. Thingiverse is a universe of things. Different Probe Z offset for G28 and G29. I am running marlin 1.1.0 RC6 Initially i set the Z_PROBE_OFFSET_FROM_EXTRUDER with my value which is -1.3 Sorry! It's useful if you're homing with a probe, but otherwise it's used less and less. For the time being, until G29 and M851 have found a stable solution for the z_offset problem. This value you can set also via display (Marlin): Menu→Control→ Motion→Z-Offset. So is the autolevel useful or not ? If you find that your nozzle is still too high, even if you don't use G29, then perhaps try reducing your Z_HOME_POS (and/or Z_MANUAL_HOME_POS) by 2. My tool length offset article is here, It explains this in more detail. But it will be very soon in the UBL branch. To set a new current Z position, you can use G92. https://github.com/thinkyhead/Marlin/tree/rc_fix_leveling_maths, And this one adjusts Z based on the final probe position: @tyssoon All my examination of the code shows that the value being used is the one stored in the variable zprobe_zoffset as set by M851. I checked: 1. all screws (bed and others) 2. my u-bolts are ok. 3. the cable to minda seems to be ok. 4. live Z is set (-.910) Check your Z endstop trigger: EZABL – Z Not Showing “TRIGGERED” M119 Test Again, most hobby mills do not have tool changers but specifying a tool length offset is a good habit to use and most post processors will output a program with it as shown. The x-axis and the y-axis move the right direction also homing direction is ok, but the endstop does not stop the bed or the x-carriage. Did I misunderstand? I prefer to use Z_PROBE_OFFSET_FROM_EXTRUDER because I can add comment detail in the custom firmaware as many people work with me on this project. Position values within Marlin are updated, but steppers do not activate. Documentation is needed to explain how M851 works, and to get users to stop expecting retroactive adjustments of previous settings. Once you start a print and babystep z to the correct height, navigate to Menu>Control>Store Settings.This will store the babystep adjustment to use on future prints. [Q] Test Pattern. These offsets specify the distance from the tip of the nozzle to the probe — or more precisely, to the point at which the probe triggers. Yes. It basically negates the value of having the gcode commands to begin with. ^^. cosmoderp changed the title z-offset tuning not working [Bug] Ender 3V2 z-offset tuning not working Jul 28, 2020. Especially the locations where there is any 'outlier' point. so the rcbugfix is still bugged ? And if the final solution is unsuitable for G33 without applying smart tricks, G33 just keeps its own G33_z_offset. Probe responds to M codes for deployment, stowing, and shows no errors, but when it comes to levelling the probe doesn't seem to properly communicate that the Z endstop has been reached. The standard configuration file from Marlin distribution was carefully reviewed to include the latest Ender 3 specific settings from … You signed in with another tab or window. By clicking “Sign up for GitHub”, you agree to our terms of service and M206 could do the trick if XY are disabled for deltas, and only Z is used. Upon reading the documentation for G92, I see that it used to ignore software endstops. Dear @tyssoon We’ll occasionally send you account related emails. The Z offset should be specified as exactly as possible using a decimal value. Apparently not……. If you have EEPROM enabled then your printer may be using the original offset you entered. "since users who do not want to recalibrate will be confused by an auto-calibration routine that does calibrate things". Installing BLTouch Auto Bed Leveling on the Creality CR-10 3D Printer: In this instructable I’m gonna show you how I installed a bltouch sensor on my creality CR10 3d printer. There is also a possibility that the wires are connected loosely. Some uses include fine adjustment of Z position (without moving endstops) and shifting the coordinate space to print on a different part of the bed. This feature can be accessed by holding down the LCD button or by going into the menu to Tune > Z offset Once you define the Z offset it will remain until the printer is reset. The text was updated successfully, but these errors were encountered: A patch is needed to G33 to keep the print height of the first layer in sync with the changes to zprobe_zoffset by issuing command G33 P0 after each zprobe_zoffset change. More often than not, we see BLtouch(s) not working on people's machine and with it, comes a series of hair pulling frustrations and some even toss their BLtouch(s) into the bin/ out the window. Hi, can i download last marlin or one of yours, replace the configuration.h and configurationadv.h by mines without problem ? But the codebase isn't ready for it, the concept does sacrifice some optimizations, and until all previous probe operations can be re-adjusted, we are taking a step back. The nozzle moved down and the gap between the nozze and the sheet of paper was larger than before. Sign in or the G29 value replaces the M851?. If that works check in printer shape tab you set homing position to z max and printer height. G1 Z0 ; terminal ack OK, no movement. However, this can be disabled in the firmware configuration. If you made the changes in configuration.h and uploaded you need to send M502 followed by M500 to update and save the new settings. Now, every time I implement a negative movement from the z offset menu I have to stack multiple Gcode commands, starting with M851, then M211 S0, then G1 Z0.2, then M211 S1. Developers of the Marlin firmware have worked closely with Antclabs and determined that certain modifications to the firmware need to be made. Home; About; Listing; Services; Contact Us; Register; marlin z endstop not working Imagine reprobing after every 0.12mm of movement as you fine tune the offset. Notes. The recent version of the BLTouch V3 has been having problems with Creality printers, where it wasn’t working as intended. I have to object to a methodology where G33 has a saved state related to zprobe_zoffset, requiring it to keep a copy of zprobe_zoffset and transparently apply adjustment based on interim changes to zprobe_zoffset. Homing is required before G29, M48, and some other procedures.. Using x and y will change the endstop offsets. But do you think that one outlier is throwing anything off? Importantly covering key elements to configuring the SKR E3 Turbo for use with the Creality Ender 3 line of 3D printers. Double clicking also does not work All I'm trying to do is make a reliable piece of software to set the z offset so that users can operate the printer as smoothly and safely as possible. But let me help you understand why I'm being slow accepting the ideas. I measured the offset to .5mm by placing the nozzle on the bed and going up … Using RCBugFix from about 12 hours ago. new patches for this problem: #8505 and #8506 (does exactly the same thing but a little different). i changed it to 11mm and the nozzle were still at 2 mm above the bed. As I said before delta users also need to be able to set the print height of the 1st layer. But preventing the user from running G33 (= re-probing) after M851 by insisting on having a non-functional G33 is beyond my comprehension. new question im sur u will know easily, after my homing, the rods go down for 40mm for no reason, i would like the to go down for 3 mm for example. On the SKR 1.3 with Marlin Bugfix from 27th July babystepping does not appear in the Tune menu. 2. The user can choose. We’ll occasionally send you account related emails. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. @Nocturnal42 I notice that your probe triggers regularly when your nozzle is at least 1.8mm above the bed, implying that the correct probe offset for your setup is closer to -1.8 than -5.00 as shown. Ultimately a parameter of M851 that would automatically readjust software endstops would be ideal. If homing is needed the LCD will blink the X Y Z indicators. I'll get all flavors of Auto Bed Leveling working for all types of printers. I am using firmware 4.01. I'm sure it will be very popular addition at the front of many prints! Personally, I've noticed that using M581 to change the offset does not actually work with G29, even after M500 and M503 to verify, it still uses the default offset regardless of what you set it to. But if that is what it takes to get the Grid Based running well, you can bet it will end up in the code! The fact that there is no solution whatsoever is a bug, imo. I even cranked it all the way down to -6.72 without a bed crash. I gave the branch the name 'Unified Bed Leveling' because it was my intention to bring together all of the different Auto Bed Leveling ideas for all flavors of printers. But by the same token, that may be the right answer to get a good plane defined in the event some dirt or plastic pieces end up under the glass. The current position is adjusted to align to the new home offset values. But that does not change z problem. I tried dialing it in as it was printing yet the head does not adjust. G1 Z1 ;terminal ack OK, no movement*** i have found drop sagment, replaced it and add one to 5, no changement. As you know, it isn't currently used for Delta's. I keep forgetting that the probe Z offset has nothing to do with the Z position when printing, unless one is using their Z probe for homing. @tyssoon If you do a print with just G28 and no G29 is your nozzle still starting 2mm too far above the print surface? The assumption is that this readjusts the software endstop, which will no longer be constrained by the old M851 values. @G2Barbour or maybe this is intended behavior… see G92 NOTES: https://marlinfw.org/docs/gcode/G092.html. I will keep your idea of throwing out points that are too far off the plane defined by the other points in my back pocket. For the sake of stability something needs to be done with G33 to cater for these changes. You coul try to remove or replace https://github.com/MarlinFirmware/Marlin/blob/RCBugFix/Marlin/Marlin_main.cpp#L3240-L3243. I get the feeling we are being coddled and treated like we aren't responsible enough to control our own machines, and it is restricting the overwhelming majority of us that are adult enough to take responsibility for our own machines from working efficiently. Thx a lot @thinkyhead Then I issued a M851 Z0.3 to set a z_offset so the printer would lay it's 1st layer a little bit above the bed, but no matter what I set the z_offset to, the printer always goes to the same position with G1 Z0 even after G28 and tries to print on the same z_height scraping the bed, even if I give z_offset ridiculous values like -10 or 10.
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