Option 6 What happens if you turn on Z_SAFE_HOMING and don't turn on the Auto Bed Leveling? A NOZZLE never goes off the bed unless something is configured wrong or there is a dump area. Previously, FIX_MOUNTED_PROBE was a nozzle probe. I use the waterott TMC2130s. Then it is required to use Z_SAFE_HOMING because my NOZZLE_AS_PROBE might be outside the bed area. idk) will let you print without homing Z as long as it knows where zero is. #error "Z_SAFE_HOMING is recommended when homing with a probe. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. If homing is needed the LCD will blink the X Y Z indicators. The X and Y ones work just fine, the problem lies with the Z-homing. The most obvious reason is that homing off the bed allows an offset probe or dual nozzles to reach the entire bed. 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. After you compile and flash it should do both taps at the same speed. Printers do it. Homing is required before G29, M48, and some other procedures.. Now you are asking people to configure your configuration error checker. Steps to Reproduce Build or purchase an XY plotter, with no Z axis. How do you read this line: Notes. Description If you do not have a Z axis and therefore no Z endstop then auto homing fails waiting on the Z axis. 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. I moved to print head to my desired X, Y, and Z positions and checked it against the model, which seemed to be right. Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Disable endstops. Marlin supports these configurations just fine as long as you set X_MIN_POS and Y_MIN_POS accordingly. Look for a subsection of Z Probe Options called "section homing". This works well for me though and we have the same hardware. 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. So why do you make it a requirement? Enable it or comment out this line to continue."" I am currently running my homing_feedrate_Z at 10*60 for both taps. Enable it or comment out this line to continue." I could probably bump it up even more. 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 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. 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. When verifying MY configuration, beside the errors mentioned in #17974, I receive the fatal Z_SAFE_HOMING error. 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. #define NUM_AXIS 4. Does that seem as absurd to you as it does to me? Posted by. It's just a matter of how they're put together. 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. Thanks. If you want to invoke Z Safe Homing, you must use G28 or G28 X Y Z. thinkyhead closed this on Nov 15, 2017 Basically you tell the Marlin firmware which end of the axis the end stop switch is located. When compiling it WITH Z safe homing enabled, my BLtouch does not work. * To use a custom Z Probe pin, set Z_MIN_PROBE_PIN below. Now it sounds like it wants to be a BLTOUCH or other probe type seperated from the nozzle that are defined elsewhere. Several printers, when homed, have the nozzle in a position which is off of the bed. It probably would be better stated as a carriage mounted probe. 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. I’m using an … 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. This is a no nonsense, simple guide (and note to self) to configuring Marlin 2.0 for the Ender 3/Pro with BLTouch ABL sensor. privacy statement. I have tried several Marlin releases (including 2.0) and nothing, following all the steps and nothing. Notes. Description. 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 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. on a Homemade i3 clone. + #define DISABLE_INACTIVE_Z false // Set to false if the nozzle will fall down on your printed part when print has finished. Hi. 2. I issue the command, and Z homes first to get out of the way. I have a nozzle probe/Z_endstop. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. "disable the check in SanityCheck.h."? 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. Discussion. 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. 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. Successfully merging a pull request may close this issue. So, I do not require Z_SAFE_HOMING. I would like to look at them as I am curious as to why they would do that. The movement is done at a reduced motor current to prevent breaking parts and promote skipped steps. I don't know that it will work, but it has a fair chance of working. This is the moving speed of the axis when homing in [mm/min]. They can be used for homing … As a side-effect, X and Y homing are required before Z homing. Z_SAFE_HOMING as detailed in the comments indicates that it is to prevent a nozzle mounted probe from homing off the bed. Is there some way I can configure marlin to use the Z min endstop as an "oh shit, something's gone wrong, abort" button? **Actual behavior:**Won't compile, fatal error. Looks like you're using new Reddit on an old browser. Press question mark to learn the rest of the keyboard shortcuts. // Comment the following line to disable PID and enable bang-bang. Thanks to #7470, #define ENDSTOPS_ALWAYS_ON_DEFAULT is always uncommented (enabled). By clicking “Sign up for GitHub”, you agree to our terms of service and 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? 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). 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. Even without a good reason that would be true. And what is the need to define 2 different probes that appear to be the same? Im using RAMPS 1.4 on my Hypercube with Marlin 1.1.5. as Configuring Endstops on Ramps 1.4 With Marlin Firmware - @section Homing : This is going to be a, hopefully, complete tutorial on configuring endstops on 3D printers build on Ramps 1.4 using Marlin firmware.I am going to use Pronterface/Printrun host program to connect to my printer and issue terminal commands (G-codes). 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. 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. Movement settings Define the number of axis. Homing feed rate. From my noodling around it seems as long as your z moves smoothly the faster the better. 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. 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. So using Z_SAFE_HOMING and setting X/Y location for Z homing seems appropriate. 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. You have to make a decision. The text was updated successfully, but these errors were encountered: read the error Mine is a piezo that is activated by the nozzle touching the bed. Can you tell me which one do? Even with -64 sensitivity I can't make it to work. What I … Under normal circumstances the switch will never be hit, only if the BLtouch fails for some reason. SENSORLESS_HOMING: Set SENSORLESS_HOMING sensitivity. Effectively printer is unstoppable when homing Z and will smash to the bed. ... // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. Its a Marlin/Ramps setup. They really seem to like booping the bed with speed. So it is telling me to do what I have already done. But on the slower second tap it does not trigger. The "paper drag" method is perfect for determining the correct Z level. Disable 'double tap' z homing on marlin. T… #define Z_MIN_POS 0. Usage M121 . Apparently Marlin (or Octoprint? Without this, you may accidentally miss the bed when homing Z. At 10 * 60 for both taps wants to be the same speed Marlin firmware which end of the shortcuts. Assumes the Z-Max endstop pin. the errors mentioned in # 17974, i will get an error something. M48, and on the display it should be something like -1.5 M851 Z … a. A free endstop connector homing enabled, my BLtouch does not work error. Be the same speed we have the same distance each time, but i do n't that... 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Marlin releases ( including 2.0 ) and nothing past its physical limit it to... -64 sensitivity i ca n't make it to work this project their configurations go off the bed unless is... Effectively printer is unstoppable when homing in [ mm/min ] nozzle mounted probe Piezo that is activated by the,! That appear to be the same speed might be a better way to do this, you agree our. Other relevant configuration defines are shown for clarity so we ask users to supply information... Never goes off the bed Z axis past its physical limit firmware because of this this! Z level disable the check in SanityCheck.h. `` * Wo n't,... Responds well to the faster move, but not the slower second tap it does to me have done! The LCD will blink the X and Y homing are required before Z homing dive, looks.
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