When verifying MY configuration, beside the errors mentioned in #17974, I receive the fatal Z_SAFE_HOMING error. It seems to be that the Piezo probe responds well to the faster move, but not the slower one. Posted by. Sign in As a side-effect, X and Y homing are required before Z homing. to your account. on a Homemade i3 clone. I don't have a dump area, therefore, my nozzle never will go off the bed. 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. 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. I use the waterott TMC2130s. Already on GitHub? After this command endstops will be kept disabled when not homing. My probe IS the nozzle, not something mounted on the carriage. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. We’ll occasionally send you account related emails. From my noodling around it seems as long as your z moves smoothly the faster the better. I would like to look at them as I am curious as to why they would do that. Apparently Marlin (or Octoprint? But many commands in Marlin use parameters only as flags, and their mere presence is the trigger for a change in behavior. I’m using an … New comments cannot be posted and votes cannot be cast. Marlin supports these configurations just fine as long as you set X_MIN_POS and Y_MIN_POS accordingly. * To use a custom Z Probe pin, set Z_MIN_PROBE_PIN below. Homing feed rate. When compiling it WITH Z safe homing enabled, my BLtouch does not work. 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. 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? Does that seem as absurd to you as it does to me? Press question mark to learn the rest of the keyboard shortcuts. Setting up Marlin is fiddly at the best of times. 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. You can not only change the Z offset in the slicer or in the configuration of Marlin, but also with G-code commands. Printers do it. After you compile and flash it should do both taps at the same speed. You have to make a decision. What I … ... (By default Marlin assumes the Z-Max endstop pin.) 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. E3D v6, and the 'Orion Module' Piezo probe from precision piezo. 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. I don't know that it will work, but it has a fair chance of working. 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 … It probably would be better stated as a carriage mounted probe. 2 years ago. I found a solution to this problem. I got the error because it is not enabled ==> commented out. Marlin Github Scripts; Contributing to Marlin; Feature requests; Adding new fonts ... control Disable endstops and keep them enabled when not homing. 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. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. Under normal circumstances the switch will never be hit, only if the BLtouch fails for some reason. If I manually move the head so that the 0 position is in this small window the printer will c Discussion. I have Piezo Z probe, and on the initial regular speed z homing dive, it looks to be spot on, repeatedly. Successfully merging a pull request may close this issue. #error "Z_SAFE_HOMING is recommended when homing with a probe. There is no way to auto-detect this, so we ask users to supply this information in their configurations. 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. So it is telling me to do what I have already done. * Note the Z axis value on the display it should be something like -1.5 M851 Z … This prevents your Z homing from occurring without prior X and Y homing. It seems to move the same distance each time, but I don't know for sure. But still, I will get an error for something I don't need. So why do you make it a requirement? 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. If stepper drivers time out, X and Y homing will be required again. The Simplify3D profile I used with a MakerGear M2 would purge off the side of the bed then scrape it off on the side of the bed. Basically you tell the Marlin firmware which end of the axis the end stop switch is located. How can i disable the second tap? "Enable it or comment out this line to continue." Getting Decent Results Now. Its a Marlin/Ramps setup. You now have code that supposedly works for off bed nozzles, with explanations that are only known by the developers that are trying to tell people to modify something that should not be modified - your sanity check. Several printers, when homed, have the nozzle in a position which is off of the bed. 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. You signed in with another tab or window. Have a question about this project? 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. If homing is needed the LCD will blink the X Y Z indicators. T… I moved to print head to my desired X, Y, and Z positions and checked it against the model, which seemed to be right. Discussion. Disable endstops. I have Piezo Z probe, and on the initial regular speed z homing dive, it looks to be spot on, repeatedly. 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. 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. I activate the Z_SAFE_HOMING option. If you want to invoke Z Safe Homing, you must use G28 or G28 X Y Z. thinkyhead closed this on Nov 15, 2017 Disable 'double tap' z homing on marlin. Hi, I'm trying to switch from sprinter to Marlin (RC2) and I'm running into issues with homing. I’m not really sure why this is even being debated. The X and Y ones work just fine, the problem lies with the Z-homing. Right now I'm having issues making sensorless homing to work. Previously, FIX_MOUNTED_PROBE was a nozzle probe. Now you are asking people to configure your configuration error checker. A NOZZLE never goes off the bed unless something is configured wrong or there is a dump area. ... // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. If really needed, you could also disable selectively Z axis homing into the G28 command by changing a few lines in G28.cpp (but not absolutely trivial) 1 Like sch00f (Raphael) November 23, 2019, 10:12am #8 I think I found it Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Effectively printer is unstoppable when homing Z and will smash to the bed. You would do this by going into Configuration.h and moving these lines: #define Z_SAFE_HOMING // This feature is meant to avoid Z homing with Z probe outside the bed area. The text was updated successfully, but these errors were encountered: read the error In every step/combination, all other relevant configuration defines are shown for clarity. I had this problem with my peizo as well. 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. I have a nozzle probe/Z_endstop. 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. I then set Z at zero, G92 Z0. #define NUM_AXIS 4. with it enabled and X Y set to 0 it compiles - still with the other errors. This may have side-effects if using SD_ABORT_ON_ENDSTOP_HIT. "Z_SAFE_HOMING is recommended when homing with a probe. The option used to be called PROBE_DOUBLE_TOUCH (just comment it out), but recent versions of Marlin are using a MULTIPLE_PROBING count (so MULTIPLE_PROBING=1, and I bet you need to bump up the "slow" probe speed). The most obvious reason is that homing off the bed allows an offset probe or dual nozzles to reach the entire bed. 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. This is the moving speed of the axis when homing in [mm/min]. A NOZZLE never goes off the bed unless something is configured wrong or there is a dump area. The "paper drag" method is perfect for determining the correct Z level. * * - The simplest option is to use a free endstop connector. This works well for me though and we have the same hardware. Then this error message is also confusing: Im using RAMPS 1.4 on my Hypercube with Marlin 1.1.5. You do not need Z_SAFE_HOMING if you follow the instructions. 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. @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. M915: TMC_Z_CALIBRATION (Deprecated in Marlin 2.0.) either enable Z_SAFE_HOMING or disable the check in SanityCheck.h. SENSORLESS_HOMING: Set SENSORLESS_HOMING sensitivity. Looks like you're using new Reddit on an old browser. G28 disables bed leveling. **Actual behavior:**Won't compile, fatal error. 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. // Comment the following line to disable PID and enable bang-bang. /r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing. I could probably bump it up even more. Disable 'double tap' z homing on marlin. So using Z_SAFE_HOMING and setting X/Y location for Z homing seems appropriate. When I instruct the printer to home it only goes ~1cm in each direction and stops well short of the end stop. So, I do not require Z_SAFE_HOMING. How do you read this line: If stepper drivers time out, X and Y homing will be required again. And what is the need to define 2 different probes that appear to be the same? But on the slower second tap it does not trigger. Close. Mine is a piezo that is activated by the nozzle touching the bed. I issue the command, and Z homes first to get out of the way. This appears to have worked because i now get two taps at the same speed. -#define DISABLE_INACTIVE_Z true // Set to false if the nozzle will fall down on your printed part when print has finished. 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. 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. There might be a better way to do this, I'm not sure. 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. 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. Usage M121 . It is the total number of axis (3) plus the number of extruders (1). What happens if you turn on Z_SAFE_HOMING and don't turn on the Auto Bed Leveling? Selecting a nozzle type is a little confusing since the wording seems to indicate that a FIX_MOUNTED_PROBE (a nozzle-based probe-switch) and a NOZZLE_AS_PROBE (conductive nozzle system or a piezo-electric smart effector) are the same thing. #define Z_MIN_POS 0. Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Without this, you may accidentally miss the bed when homing Z. Or make it go the same speed as the initial tap? If you want to use PID to efficiently heat your bed, uncomment #define PIDTEMPBED. // Sets direction of endstops when homing; 1=MAX, -1=MIN #define X_HOME_DIR -1 #define Y_HOME_DIR -1 #define Z_HOME_DIR 1. As a side-effect, X and Y homing are required before Z homing. Notes. Many common printers have their end stops set such that the nozzle is off the bed when they home. Enable it or comment out this line to continue."" Description. Description If you do not have a Z axis and therefore no Z endstop then auto homing fails waiting on the Z axis. 2. I have tried several Marlin releases (including 2.0) and nothing, following all the steps and nothing. The movement is done at a reduced motor current to prevent breaking parts and promote skipped steps. Can you tell me which one do? Having to revise your configurations every update certainly doesn’t help. Thanks. By clicking “Sign up for GitHub”, you agree to our terms of service and But on the slower second tap it does not trigger. Other than of course to read your mind and interpret something totally uncommunicative and mess with your Sanity Checker. I am currently running my homing_feedrate_Z at 10*60 for both taps. Pin. having issues making sensorless homing to work your configuration error checker number extruders... Mounted probe from precision Piezo never be hit, only if the nozzle not... 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Walks of life can learn about and discuss 3D printing error for something i do n't know that it to! Do that i am curious as to why they would do that not deployed while homing Z. heavy_check_mark...