if not delta do this If you really can't fix that, run octoprint on a dedicated rpi that you're not gaming or loading experimental kernel modules or whatever on. If homing is needed the LCD will blink the X Y Z indicators. I set relative positioning on, G91, and moved Z up toward the print head until a business card was firmly clamped between the head and the plate. - MarlinFirmware/Marlin I use pronterface to do all my testing. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Why can't I move files from my Ubuntu desktop to other folders? Well the issue I'm having now is that after flashing the firmware (Marlin Firmware 1.1.9) and attempting to home, the z axis limit switch is unresponsive. So you take your 4mm/s / 60 which makes it so slow. I have a wire with magnet i can attach to the motor shaft all wired up, and want to use a grounded metal plate for detecting the Top of the work, or spoiler board - But, anyone know if there is a built-in command in Marlin? The text was updated successfully, but these errors were encountered: Check out HOMING_FEEDRATE in Configuration.h and in Configuration_adv.h. privacy statement. If homing is needed the LCD will blink the X Y Z indicators. // Set to 2 for a fast/slow probe, using the second probe result. // Set to 3 or more for slow probes, averaging the results. Oftentimes in Marlin, speed or acceleration are expressed in [mm/s] or [mm/s2] but the feed is expressed in [mm/min]. Are you sure? If stepper drivers time out, X and Y homing will be required again. // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28). why not in line 1820 I've been trying to fix an issue with my Y homing function for quite some time. // Set to 2 for a fast/slow probe, using the second probe result. Uncomment Z_SAFE_HOMING. Apparently Marlin (or Octoprint? Hmm the only time that effect happens for me is if I try to move any axis...x, y, z, or an extruder before I home with just a normal G28. it is funny because this section is in a else Brackets so in a nut shell it's saying Notes. // // #define Z_SAFE_HOMING # if ENABLED(Z_SAFE_HOMING) // // With this feature enabled: // // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. 1,900 1 1 gold badge 3 3 silver badges 22 22 bronze badges $\endgroup$ add a comment | 0 $\begingroup$ Looks like endstop signal for Z is inverted. 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). I'm using the Marlin firmware (1.1.0-RC7 - 31 July 2016) for a 3d printer. #define XY_PROBE_SPEED 8000. and i have 8 start leadscrews for Z and can move well over 40mm/s, found it code expects Max Z feed rate in MM per min The sequence for homing Z by issuing G28 Z0 is: Some TMC stepper drivers can detect when they bump into something that causes them to stop moving. Report the current speed percentage factor if no parameter is specified. Homing feedrate The homing feedrate is the speed at which the axis home, by default it's set to #define HOMING_FEEDRATE {50*60, 50*60, 5*60, 0} // set the homing speeds (mm/min) Between the {} are the axis x,y,z,extruder, where extruder never needs homing. Why do password requirements exist while limiting the upper character count? The feedrate is in mm per minute. Homing feed rate. #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2) #define MULTIPLE_PROBING 2. Is your printer supposed to home at Z0 normally? it's not the problem That's interesting it must not be applying the same way for delta. I don't know what it means specifically by "homing_feedrate_mm_m array instead". The newly added function line_to_destination takes the feedrate in mm/min. Ok. // - Prevent Z homing when the Z probe is outside bed area. digging deeper now, The incredible slow part is in the config_adv. I can't wrap my mind around what I need to do here. Now the printer seems to be of two minds when it comes to finding the origin. About Marlin Welcome! Making statements based on opinion; back them up with references or personal experience. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The speed may change over time following an acceleration curve, according to the acceleration and jerk settings of the given axes. MathJax reference. When I run G28 with no arguments, homing speeds are as expected. Sign in Only the first raise is painfully slow. Is it possible for planetary rings to be perpendicular (or near perpendicular) to the planet's orbit around the host star? // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. #define Z_MIN_POS 0. As a side-effect, X and Y homing are required before Z homing. // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28). // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28). To know this would be helpful in setting up a piezo z probe. This is the first time it's ever frozen mid-print and I think it's because I left Cura and several other Chrome tabs open. i just built it as of the last 20mins for my i3 and can confirm the bug is real // #define Z_SAFE_HOMING Everything seems to be at the rate I expect except that initial rise. // - If stepper drivers time out, it will need X and Y homing again before Z homing. Help needed : Marlin z axis homing speed settings. I propose we get rid of any mm/min functions, converting all to mm/s.. and just convert the gcodes received in mm/min as soon as they are received. This video come from https://www.youtube.com/user/fiverats/featured It‘s said black marlin can swim more than 100-130km/h？？ I fear that I may have not zero'd down enough, so there will be a noticeable gap/weak spot, but I won't know that until I get more layers on than there are at this moment. This prevents your Z homing from occuring without prior X and Y homing. #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2) #define MULTIPLE_PROBING 2. G29 seems to somewhat randomly leave the z-probe down after the last probe. Benefits Reduced chance of physical / endstop damage on Creality printers. Beekeeper. If I run G29, again speeds are as expected. If I run G28 Z0, the extruder is raised at a snails pace, then lowered to the stop at expected speed, then raised and lowered to stop again at expected (slower) speed. #define Z_SAFE_HOMING. idk) will let you print without homing Z as long as it knows where zero is. With a retract of just 2mm this takes 10 seconds. The printer knows this is (100,100,0) and is not mistakenly thinking it is (0,0,0). // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28). When this correction is correct in line 1953 https://github.com/MarlinFirmware/Marlin/blob/Development/Marlin/Marlin_main.cpp#L1953 There is no differentiation between the x/y axis homing speed and the z axis speed. // - Prevent Z homing when the Z probe is outside bed area. Can an exiting US president curtail access to Air Force One from the new president? Homing is required before G29, M48, and some other procedures.. By clicking “Sign up for GitHub”, you agree to our terms of service and OK. Marlin's default Z homing speed is too high for your Z steppers and they are missing steps. #define Z… The rest of the steps for resuming a print (editing the G-Code and what-not) are readily available in a dozen or more tutorials, so I won't cover that here. Here is the situation: I am currently using a Gen 6 Sanguino ATmega644P board, Arduino 0022, Marlin version "1.0.0 Beta 1". lower the moving speed of the Z-axis motor, search for . Homing XY moves to the lower left as it always has, but homing Z moves not only to Z=0, but also to the center of the build plate. This will be performed before any bed levelling procedure; Using Auto Bed leveling¶ Refer to Marlin's excellent Wiki on the subject. 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. Is there a way I can home Z without the head moving to center? Homing on the Ender 3 with HOMING_FEEDRATE_XY set to 50*60 was shown (MarlinFirmware#12074) to cause the end-stop micro-switches to bottom out, causing the carriage for both X and Y axis to physically crash into the micro switch. Using the given current, Marlin will move the Z axis (at homing speed) to the top plus a given extra distance. Changing line 1953 to "feedrate = homing_feedrate[Z_AXIS]" did the trick. I can safely rehome X and Y, but when I try to rehome Z the print head moves to the center of the plate, which of course would cause a collision with the model. But I will try changing the HOMING_FEEDRATE to see which of the steps is affected. This is the moving speed of the axis when homing in [mm/min]. // - If stepper drivers time out, it will need X and Y homing again before Z homing. In the several tutorials I read on how to resume a print, they all assume that the printer - which in my case had a restart of its own - knows where Z is. Anyway, for those who may come along later, here's what I figured out: I already knew what my X, Y, and Z positions should be. (BTW I use min limit switches for my XY also – ) I found that in Marlin the G30 command does EXACTLY what i wanted. With the plate lowered and the print well out of harm's way, I homed X and Y. feedrate is needed in line_to_destination. I see. #define Z_PROBE_SPEED_FAST HOMING_FEEDRATE_Z // défini en lignes 789 et suivantes // Feedrate (mm/m) for the "accurate" probe of each point #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2) // second palpage à vitesse réduite de moitié // The number of probes to perform at each point. Set speed percentage factor, aka “Feed Rate” which applies to all G-code-based moves in all (X, Y, Z, and E) axes. Thank you TechMasterJoe! Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Built latest Marlin (as of couple hours ago) for Printrboard on Simple Metal. I'm not sure what firmware this board runs, but Marlin has the capability to do a "Z_SAFE_HOMING". This prevents your Z homing from occuring without prior X and Y homing. Do rockets leave launch pad at full thrust? In my snapshot, the offending line was 1953 in Marlin_main.cpp. If you want to use PID to efficiently heat your bed, uncomment #define PIDTEMPBED. You’ll need to calibrate this later. Uncomment and set #define MANUAL_Z_HOME_POS -0.15; Uncomment #define Z_SAFE_HOMING. Or make it go the same speed as the initial tap? A critical step in setting up probes and automatic bed levelling within Marlin 2 is Z_SAFE_HOMING. I would sincerely appreciate any help. The stepper motor receives step by step moving command from the controller. I moved to print head to my desired X, Y, and Z positions and checked it against the model, which seemed to be right. Homing is required before G29, M48, and some other procedures.. The reason I use Z-max for homing is so that when i issue a Home it will pull the spindle up off the work area, which is especially needed before homing XY – I have Marlin set to home to Z first, then XY. https://github.com/MarlinFirmware/Marlin/blob/Development/Marlin/Marlin_main.cpp#L1953, https://github.com/MarlinFirmware/Marlin/blob/Development/Marlin/Marlin_main.cpp#L1820. I have the X, Y, and Z coords of where I need to begin again, and I've deleted all the GCode to that point. Are those Jesus' half brothers mentioned in Acts 1:14? in config.h as it looks like the given speed is to high. Use this command to set the bump sensitivity for the X, Y, and Z stepper drivers. It's a 36 hour print with 11 hours left to go and I'd rather not start over. #define Z_PROBE_SPEED_FAST HOMING_FEEDRATE_Z // Feedrate (mm/m) for the "accurate" probe of each point #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2) // The number of probes to perform at each point. #define Z_SAFE_HOMING … This mess in speeds is pissing me off. Was able to make it happen, though I fear that I may have misjudged exactly where zero was, but we'll see in a few hours. FYI for the OP: G0 is a rapid move, G1 is a feed move and you can program them with different rates, but a lot of 3D printers seem to treat them the same. Use MathJax to format equations. max_feedrate[Z_AXIS] * 60 is that what it should be.#1790 When I instruct the printer to home it only goes ~1cm in each direction and stops well short of the end stop. To learn more, see our tips on writing great answers. Posted by Zarquon . - Increasing Z homing speed : fails too, in fact, the homeing speed in marlin is way faster of what I have tried with repetier - Loosing steps: I have seen motors loosing steps, but this is different, the motor gets stucked - reducing z-jerk: the original value is 0.3, I have lowered it to 0.2 and 0.1 . All fails Sign up for a free GitHub account to open an issue and contact its maintainers and the community. the speed problem only effects Z_RAISE_BEFORE_HOMING G28 disables bed leveling. @AnHardt Sure, sure! How to pull back an email that has already been sent? Apparently Marlin (or Octoprint? Home > Firmware Folder > Firmware - Marlin > … Without this, you may accidentally miss the bed when homing Z. Hello, I changed the version from 1.1.8 to 1.1.9. normal decent until stop hit NOTE: The latest Marlin 2.0 handles the boundaries automatically and the below code is not needed anymore for the latest Marlin 2.0 version. This causes problems with many printers as their z-axis couldn't move that fast. In the file Marlin_main.cpp I see in the process_next_command() function, there is a 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 line is unchanged since at least Nov. 2013? G-code G29 has a speed parameter: S: Set the XY travel speed between probe points (in units/min) From below (TH3D firmware) can be seen that a value of 12000 mm/min will speed up and is generally safe to use. As far as I can tell though, when marlin is set to use the probe for homing, it completely ignores the Z endstop switch. Podcast 302: Programming in PowerPoint can teach you a few things, Useful things to check for when cleaning up posts, Problem with print bed height on Creality Ender 4, Z-Axis zero/home position is higher than the actual print starting position, AnyCubic D (aka Predator) - Z-zeroing and first layer issues, Homing X and Y after stopping print through display. This command is deprecated. https://github.com/MarlinFirmware/Marlin/blob/Development/Marlin/Marlin_main.cpp#L1820? On my printer the Z-axis switch is over to the side of the frame holding the print bed, so I can home Z with the print head anywhere. Being a derivative fro Marlin firmware, the bed leveling speed in between probes can also be easily set in G-code. In Marlin firmware. I suppose if that's true, then I could just shave off the new layers and reset zero a couple of layers tighter. From a clean fir If I run G29, again speeds are as expected. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. X and Y work as they should. As the Creality printers use the same hardware across their models, this change can be applied to all models. to your account. // #define Z_SAFE_HOMING still has another bug hiding 3rd print it started Z down on G29 tell it crashed so more then a few problems to be found so back to my 3-15-15 Dev dump that just works i got 117 parts to print i will do more debugging tomorrow almost done with my 11 foot tall delta. It is the total number of axis (3) plus the number of extruders (1). Is there some way I can configure marlin to use the Z min endstop as an "oh shit, something's gone wrong, abort" button? Already on GitHub? Why is this a correct sentence: "Iūlius nōn sōlus, sed cum magnā familiā habitat"? // - If stepper drivers time out, it will need X and Y homing again before Z homing. But on the slower second tap it does not trigger. - Increasing Z homing speed : fails too, in fact, the homeing speed in marlin is way faster of what I have tried with repetier - Loosing steps: I have seen motors loosing steps, but this is different, the motor gets stucked - reducing z-jerk: the original value is 0.3, I have lowered it to 0.2 and 0.1 . This prevents your Z homing from occurring without prior X and Y homing. I recently upgraded my prusa i3 firmware to a newer version of marlin. The feedrate is in mm per minute. // - Prevent Z homing when the Z probe is outside bed area. look in same block for "feedrate = max_feedrate[Z_AXIS];" I then set Z at zero, G92 Z0. Not sure if I was clear. And this changed in d73b169, Take a look here: d73b169#diff-1cb08de130a6ece2d1b5b9c37bcfef48R1906. Steps per mm Thanks for contributing an answer to 3D Printing Stack Exchange! #define NUM_AXIS 4. Note that aesthetics aren't an issue: these are mechanical parts to all they need is to not snap in the middle. // - If stepper drivers time out, it will need X and Y homing again before Z homing. // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. Notes. I notice that Z bump divisor is usually twice as much as X and Y on other setup's configs. homing feed rate. normal speed rise With this change, the second probing speed for Z at G28 is the same as the first probing. White neutral wire wirenutted to black hot. It seems to be that the Piezo probe responds well to the faster move, but not the slower one. Is there a setting for this that I don't know about? Homing issues with Marlin March 20, 2012 06:47PM Registered: 9 years ago Posts: 16 Hi, I'm trying to switch from sprinter to Marlin (RC2) and I'm running into issues with homing. #define Z_CLEARANCE_MULTI_PROBE 3. I have Piezo Z probe, and on the initial regular speed z homing dive, it looks to be spot on, repeatedly. Note I use a Delta but I believe these variables are in all setups. 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). Homing speeds are just below the Steps per Unit, I believe, but I don't have it in front of me. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. This is the moving speed of the axis when homing in [mm/min]. Zarquon. If you want to use PID to efficiently heat your bed, uncomment #define PIDTEMPBED. fly wheels)? As a side-effect, X and Y homing are required before Z homing. I have Piezo Z probe, and on the initial regular speed z homing dive, it looks to be spot on, repeatedly. @Wurstnase Follow-up: yep, left too much room. I uploaded a ... Z homing issue after Marlin firmware update January 14, 2014 09:08AM Registered: 7 years ago Posts: 553 There may be homing acceleration in Adv_config.h, I dont quite remember but I know there were a few different settings located there. By convention, most G-code generators use G0 for non-extrusion movements (those without the E axis) and G1 for moves that include extrusion. I will go into as much detail as possible but please keep in mind that marlin is constantly being developed and changes can lead to a setting being named differently, a file being renamed and so on. Thats awesome. I send M119 codes to the printer in Pronterface when holding the Z switch with my finger and get that the z axis is open. Ender 5 Pro With BLTouch Marlin bugfix-2.0.x config - ender-5-pro.patch Without this option enabled the nozzle will crash into the bed when homing. Homing feed rate. Running Marlin 1.1.2, printing from Octoprint on Linux PC. When I'm homed and my carriages are all at the top of the towers and clicks the endstops...I have my manually set home Z of 367.55 so the firmware knows it can travel down Z that far. Where did all the old discussions on Google Groups actually come from? The PC should not freeze up, ever. Asking for help, clarification, or responding to other answers. @section extras #define Z_CLEARANCE_BETWEEN_PROBES 3. Check with your vendor if you need source code for your specific machine. Without this, you may accidentally miss the bed when homing Z. What are the earliest inventions to store and release energy (e.g. I have just checked it and @Wurstnase is correct. When the z axis homes , it touches the endstop and moves up and homes again , but when moving down to home the second time , it moves extremely slowly , it … Help needed : Marlin z axis homing speed settings. I understand that changing the 20 number up or down changes the homing feedrate but I would like to know what 20"60 means regarding the Z feed rate in mm/m. //#define MULTIPLE_PROBING 2 /** * Z … Being a derivative fro Marlin firmware, the bed leveling speed in between probes can also be easily set in G-code. Discussion. To increase the homing speed, increase HOMING_FEEDRATE_XY from (20*60) to (40*60) and HOMING_FEEDRATE_Z … UPDATE TESTED works good now, seach marlin_main.cpp for " Z_RAISE_BEFORE_HOMING " Reducing the homing speed prevents the switches from bottoming out. Report the current speed percentage factor if no parameter is specified. I already have tried changing Z max feedrate and Z homing feedrate without noticing any major change in z speed. I recently upgraded my prusa i3 firmware to a newer version of marlin. Then moved X10 Y0, a convenient place to work. // - Prevent Z homing when the Z probe is outside bed area. Under normal circumstances the switch will never be hit, only if the BLtouch fails for some reason. A command like G1 F1000 sets the feedrate for all subsequent moves. From a clean fir mines been changed to {2,2,2} just for this test I recently upgraded my prusa i3 firmware to a newer version of marlin. I'm trying to change the feedrate for speed along the xy axis whilst the printer is in operation to make sure the printer stops on time and prints accurately. 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. #define Z_PROBE_LOW_POINT -3. There is no differentiation between the x/y axis homing speed and the z axis speed. And you set it so Z0 is appropriate nozzle height. They're just all the same on mine because of the way deltas work. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Z is then re-homed to correct the position. If the BlTouch fails for some reason 3 ) plus the number of extruders ( )... Tmc stepper drivers can detect when they bump into something that causes them to stop moving will. Their z-axis could n't move that fast changing the HOMING_FEEDRATE to see of. Feedrate = HOMING_FEEDRATE [ Z_AXIS ] * 60, 4 * 60, 50 * 60, 50 * is! Issue and contact its maintainers and the Z probe is outside bed area the LCD will blink the X Y. Motor receives step by step moving command from the controller way I can enter for Z so can... Nov. 2013 for contributing an answer to 3D printing enthusiasts Z_AXIS ] * 60 } steps. But not the slower second tap it does not trigger it so Z0 appropriate. Homing_Feedrate to see which of the given speed is too high for Z... 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That fast ”, you may accidentally miss the bed level, and remnant AI tech why ca wrap! Is too high for your Z homing only after X marlin z homing speed Y homing again before Z homing when Z! Wurstnase is correct in line 1953 https: //github.com/MarlinFirmware/Marlin/blob/Development/Marlin/Marlin_main.cpp # L1953 why not in line 1820:... Pull request may close this issue to open an issue with my Y homing again before Z.. “ sign up for GitHub ”, you may accidentally miss the bed when homing Z are those '. Homed X and Y homing and stepper drivers time out, it looks like the axes. Some offset I can home Z without the head moving to center change, the PC freezes up I. Detect when they bump into something that causes them to stop moving Z_AXIS ] '' did the trick the... 'S interesting it must not be applying the same way for Delta over following. Not trigger Ender-3 's homing speed is to manage the printer seems to spot. 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