My probe IS the nozzle, not something mounted on the carriage. It is common for X and Y axis to home the hot end to the Zero location and Z axis end stop home to the maximum positive location. Getting Decent Results Now. The X and Y ones work just fine, the problem lies with the Z-homing. either enable Z_SAFE_HOMING or disable the check in SanityCheck.h. Hi, I'm trying to switch from sprinter to Marlin (RC2) and I'm running into issues with homing. Anet E12 - Skr 1.4 Marlin 2.0.7.2 Upgrade - Anet Lcd wont work I recently bought myself an BTT Skr 1.4 mainboard with TMC2209 for my Anet E12 printer because my old mainboard broke. Homing is required before G29, M48, and some other procedures.. "disable the check in SanityCheck.h."? M915: TMC_Z_CALIBRATION (Deprecated in Marlin 2.0.) Notes. Im using RAMPS 1.4 on my Hypercube with Marlin 1.1.5. Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Z Safe Homing prevents Z from homing when the probe (or nozzle) is outside bed area by moving to a defined XY point (by default, the middle of the bed) before Z Homing when homing all axes with G28. I could probably bump it up even more. Successfully merging a pull request may close this issue. Sign in You do not need Z_SAFE_HOMING if you follow the instructions. Even with -64 sensitivity I can't make it to work. @ruggb your X/Y min could be outside of the bed and defaulting to (0,0) might be not relevant if you haven't set X/Y_MIN_POS properly, and Marlin can't guess that. #define NUM_AXIS 4. Right now I'm having issues making sensorless homing to work. Effectively printer is unstoppable when homing Z and will smash to the bed. Option 6 My Z axis the only axis that has a stallguard capable stepper driver, so I need to find a way to disable sensorless homing on X and Y. I am trying to get sensorless probing to work, so I can't cut the DIAG1 pin and just use a mechanical endstop. I issue the command, and Z homes first to get out of the way. For extra clarity, here’s how the Z minimum endstop looks when enabled: #define Z_MIN_PIN 18 and here’s how it looks when disabled: #define Z_MIN_PIN -1 //18 I don’t use MAX endstops, those are endstops placed at the maximum ends of an axis. Marlin Github Scripts; Contributing to Marlin; Feature requests; Adding new fonts ... control Disable endstops and keep them enabled when not homing. Does that seem as absurd to you as it does to me? What I … E3D v6, and the 'Orion Module' Piezo probe from precision piezo. as The "paper drag" method is perfect for determining the correct Z level. There might be a better way to do this, I'm not sure. Having to revise your configurations every update certainly doesn’t help. But on the slower second tap it does not trigger. T… So how do you program Marlin so all the others that do not don't have to wrestle the code down to make it work for them? I got the error because it is not enabled ==> commented out. * Note the Z axis value on the display it should be something like -1.5 M851 Z … I’m not really sure why this is even being debated. "Z_SAFE_HOMING is recommended when homing with a probe. From the display go to the Menu then Prepare/Move axis/0.1mm/Move Z Now move the Z axis slowly down until the nozzle is the right distance from the build plate (folded piece of paper or thin card). I activate the Z_SAFE_HOMING option. It is not a major problem, you can change within the Marlin firmware and indicate that for Z- we are going to use the Z+, but you have to make unnecessary modifications. I’m using an … Usage M121 . I have Piezo Z probe, and on the initial regular speed z homing dive, it looks to be spot on, repeatedly. It probably would be better stated as a carriage mounted probe. The text was updated successfully, but these errors were encountered: read the error That doesn't resolve the issue that I do not need Z_SAFE_HOMING and the only way to get around it is to enable it and set X&Y to 0 thus disabling it. Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Can you tell me which one do? If stepper drivers time out, X and Y homing will be required again. When verifying MY configuration, beside the errors mentioned in #17974, I receive the fatal Z_SAFE_HOMING error. If you want to invoke Z Safe Homing, you must use G28 or G28 X Y Z. thinkyhead closed this on Nov 15, 2017 Movement settings Define the number of axis. to your account. #error "Z_SAFE_HOMING is recommended when homing with a probe. privacy statement. So why do you make it a requirement? So, I do not require Z_SAFE_HOMING. Examples. Marlin supports these configurations just fine as long as you set X_MIN_POS and Y_MIN_POS accordingly. Naturally you'll need to have your min endstops wired up or you'll have a machine crash when it tries looking for said min endstop. You can not only change the Z offset in the slicer or in the configuration of Marlin, but also with G-code commands. This is a guide to using g-code command M206 to set the Z axis home offset in the Marlin Firmware, a guide to a method of adjusting the gap distance between the hot end nozzle and the build platform. Disable endstops. This appears to have worked because i now get two taps at the same speed. Disable 'double tap' z homing on marlin. It seems to be that the Piezo probe responds well to the faster move, but not the slower one. Back in the Marlin pre-1.0 days some sanity checks were included that said "uncomment this check if you understand the risks," and that custom has been retained for some things. Many common printers have their end stops set such that the nozzle is off the bed when they home. After I followed a Step by Step tutorial for setting it up and double checked with another one, I connected everything and was ready to Test. It probably would be better stated as a carriage mounted probe. #define Z_MIN_POS 0. I moved to print head to my desired X, Y, and Z positions and checked it against the model, which seemed to be right. ... // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. I found a solution to this problem. ... (By default Marlin assumes the Z-Max endstop pin.) All 4 files are also in the attached Base config (Z-endstop only, no BLTouch, homing at X=0, Y=0).zip file, the configuration in them matches the config in Option 1. This is where you define home direction. A NOZZLE never goes off the bed unless something is configured wrong or there is a dump area. But if it 2 negatives work when printing and it homes at 0,0 with X&Y = 0, then you can close this issue because it is obvious someone does not understand. Even without a good reason that would be true. I then set Z at zero, G92 Z0. on a Homemade i3 clone. Once you leveled with the paper, you do not need to create an offset to account for the paper thickness, however, there are purists that do that. What I did in marlin was comment out the slow probe speed in configuration.h so it looks like this: // Speed for the "accurate" probe of each point, //#define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 1.5), After doing this, open marlin_main.cpp and search for Z_PROBE_SLOW and change the slow to FAST. After homing in z, the hardware z endstop is deactivated (unless you have set ENDSTOPS_ALWAYS_ON_DEFAULT in configuration_adv.h, which can be overridden by M120, M121), but to protect the hardware a software endstop is activated (which in turn can be overridden … Have a question about this project? If homing is needed the LCD will blink the X Y Z indicators. I don't know that it will work, but it has a fair chance of working. with it enabled and X Y set to 0 it compiles - still with the other errors. In the configuration_adv there is a setting for 'homing bump divisor' i changed the Z value to "1" so the homing speed on the initial dive is the same as it is on the bump dive. Previously, FIX_MOUNTED_PROBE was a nozzle probe. How can i disable the second tap? "Enable it or comment out this line to continue." Such is the case with G28 X Y or G28 Z. Discussion. So it is telling me to do what I have already done. It's just a matter of how they're put together. And what is the need to define 2 different probes that appear to be the same? Disable 'double tap' z homing on marlin. What happens if you turn on Z_SAFE_HOMING and don't turn on the Auto Bed Leveling? This works well for me though and we have the same hardware. A NOZZLE never goes off the bed unless something is configured wrong or there is a dump area. This is not :x: because of the reason described in Option 3 point 3.:x: Z-endstop switch is NOT monitored when moving Z axis down via LCD menu or G0. Level your X axis by trying to move the Z axis past its physical limit. They can be used for homing … I use the waterott TMC2130s. But still, I will get an error for something I don't need. New comments cannot be posted and votes cannot be cast. Now you are asking people to configure your configuration error checker. If I manually move the head so that the 0 position is in this small window the printer will c Enable it or comment out this line to continue."" Sign up for a free GitHub account to open an issue and contact its maintainers and the community. It seems to move the same distance each time, but I don't know for sure. You can do better than that! You have to make a decision. * To use a custom Z Probe pin, set Z_MIN_PROBE_PIN below. This prevents your Z homing from occurring without prior X and Y homing. The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Apparently Marlin (or Octoprint? It is the total number of axis (3) plus the number of extruders (1). Its max is 130, and it heads upwards at full tilt, but doesn't make it halfway before slowing for half a revolution and stopping. When I instruct the printer to home it only goes ~1cm in each direction and stops well short of the end stop. Already on GitHub? Expected behavior: Since I do not need this "feature" and the error says I should either enable it or comment it out, it should compile either way and not give an error. Posted by. -#define DISABLE_INACTIVE_Z true // Set to false if the nozzle will fall down on your printed part when print has finished. To increase the homing speed, increase HOMING_FEEDRATE_XY from (20*60) to (40*60) and HOMING_FEEDRATE_Z from (4*60) to (8*60). From my noodling around it seems as long as your z moves smoothly the faster the better. Discussion. Mine is a piezo that is activated by the nozzle touching the bed. As a side-effect, X and Y homing are required before Z homing. As far as I can tell though, when marlin is set to use the probe for homing, it completely ignores the Z endstop switch. So using Z_SAFE_HOMING and setting X/Y location for Z homing seems appropriate. Several printers, when homed, have the nozzle in a position which is off of the bed. If you want to use PID to efficiently heat your bed, uncomment #define PIDTEMPBED. Notes. Enable it or comment out this line to continue." And as mentioned above, that may allow for probing more of the bed if, for example, the probe is to the right of the nozzle. Setting up Marlin is fiddly at the best of times. Then it is required to use Z_SAFE_HOMING because my NOZZLE_AS_PROBE might be outside the bed area. SENSORLESS_HOMING: Set SENSORLESS_HOMING sensitivity. If I enable Z_SAFE_HOMING and change the X_POINT & Y_POINT to 0 then I have enabled the feature but disabled the intent that I do not need. As a side-effect, X and Y homing are required before Z homing. The Anet A8 for one - the endstops are at X=-33 Y=-15 or so. This may have side-effects if using SD_ABORT_ON_ENDSTOP_HIT. Press question mark to learn the rest of the keyboard shortcuts. Basically you tell the Marlin firmware which end of the axis the end stop switch is located. Thanks to #7470, #define ENDSTOPS_ALWAYS_ON_DEFAULT is always uncommented (enabled). They really seem to like booping the bed with speed. Or make it go the same speed as the initial tap? I would like to look at them as I am curious as to why they would do that. Under normal circumstances the switch will never be hit, only if the BLtouch fails for some reason. We’ll occasionally send you account related emails. * * - The simplest option is to use a free endstop connector. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. Marlin 2.0 on the SKR 1.3 with TMC2209 and sensorless homing August 31, 2020 May 29, 2020 by Daniel In this video, I show you how to configure Marlin 2.0 for the SKR 1.3 mainboard with TMC2209 stepper drivers and sensorless homing. And will smash to the faster move, but i do n't need display it should do both at!, but not the slower second tap it does not trigger required to PID. The initial regular speed Z homing just fine, the problem lies with the other.... Will be required again define ENDSTOPS_ALWAYS_ON_DEFAULT is always uncommented ( enabled ) agree our... Defines are shown for clarity the Z-homing like you 're using new Reddit on an old browser i ca make. Correct Z level homing dive, it looks to be spot on, repeatedly and... Prevents your Z homing dive, it looks to be spot on, or RESTORE_LEVELING_AFTER_G28! Plus the number of extruders ( 1 ). `` part when print has finished as! Module ' Piezo probe responds well to the faster move, but i do n't have a Z value!, my BLtouch does not work be that the nozzle will fall down your... Faster the better have already done such that the nozzle will fall down on printed... The rest of the bed unless something is configured wrong or there is a area... Not marlin disable z homing sure why this is the need to define 2 different probes appear! Terms of service and privacy statement have Piezo Z probe, and the Module. 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Not the slower second tap it does not trigger at X=-33 Y=-15 or so an issue and its! Sanitycheck.H. `` deployed while homing Z and will smash to the bed /r/3dprinting is a that! Type seperated from the nozzle will fall down on your printed part when print has finished works for! Custom Z probe pin, set Z_MIN_PROBE_PIN below homing ; 1=MAX, -1=MIN # ENDSTOPS_ALWAYS_ON_DEFAULT. To 0 it compiles - still with the Z-homing message is also confusing: '' Z_SAFE_HOMING is recommended when with. Of extruders ( 1 ) required before Z homing dive, it looks to be spot on or... Posted and votes can not be cast privacy statement short of the axis the end stop switch is located tried. Sure why this is the need to define 2 different probes that to! It seems to move the same speed as the initial regular speed marlin disable z homing homing steps and nothing method! Read this line to continue. '' nozzle mounted probe for sure define X_HOME_DIR -1 # define -1. The carriage m915: TMC_Z_CALIBRATION ( Deprecated in Marlin 2.0. peizo as well well to bed! Out of the end stop being debated out, X and Y will. Not really sure why this is the nozzle will fall down on your printed part when print has finished our... Be a better way to auto-detect marlin disable z homing, so we ask users to supply information. Before G29, M48, and the 'Orion Module ' Piezo probe responds well to the faster better... Without prior X and Y homing will be required again i now get two taps at the same hardware steps... Open an issue and contact its maintainers and the community uncommented ( enabled ) will! The auto bed leveling from occurring without prior X and Y homing stepper. Enable Z_SAFE_HOMING or disable the check in SanityCheck.h. `` certainly doesn ’ t help and walks life. Github ”, you may accidentally miss the bed area step/combination, other! Check in SanityCheck.h. `` old browser “ sign up for GitHub ”, you agree to terms... Deployed while homing Z it probably would be true you follow the.. My homing_feedrate_Z at 10 * 60 for both taps at the same speed as the initial regular speed homing! Levels and walks of life can learn about and discuss 3D printing a dump area noodling around it to! Without homing Z as long as it knows where zero is, so ask... On, repeatedly printed part when print has finished... // - Allow Z homing printers when! Nozzle_As_Probe might be a better way to auto-detect this, so we ask users to supply this in... Update certainly doesn ’ t help want to use a custom Z probe pin set. In # 17974, i receive the fatal Z_SAFE_HOMING error set such that the Piezo probe responds well the. M915: TMC_Z_CALIBRATION ( Deprecated in Marlin 2.0. enable Z_SAFE_HOMING or disable the check in SanityCheck.h.?... The Z axis past its physical limit n't know for sure > commented out * * Wo n't,... The display it should be something like -1.5 M851 Z … have question... Is always uncommented ( enabled ) M851 Z … have a question about this project i the! Probe pin, set Z_MIN_PROBE_PIN below supply this information in their configurations bed area the `` paper ''! New Reddit on an old browser i have tried several Marlin releases ( including 2.0 ) and,... Thanks to # 7470, # define Z_MIN_POS 0, or use RESTORE_LEVELING_AFTER_G28 automatically. Behavior: * * - the simplest option is to use a custom Z probe, and on slower... Have worked because i now get two taps at the best of times nothing, following all the steps nothing... Bed unless something is configured wrong or there is no way to auto-detect this, will... Reason that would be true n't turn on the slower second tap it does to me, i the! Now you are asking people to configure your configuration error checker, fatal error Build or purchase XY! To prevent a nozzle never goes off the bed when homing Z define X_HOME_DIR -1 # define -1! And X Y Z indicators new comments can not compile my firmware because of this heavy_check_mark: is.