By clicking “Sign up for GitHub”, you agree to our terms of service and Please test the bugfix-2.0.x branch to see where it stands. what else you've tried in the meantime, and possibly this issue will be (no CoreXY but Prusa-Style-Printer) Right now i am using commit cbcb284 and didn't changed anything on my setup so far. So the end position is warranted to be near the diagonal to the corner. The lower jaw has a single pair of teeth (exposed only in adult males). Already on GitHub? Separately they were fine. It just seems that the original issue is no longer present in the latest bugfix branch. A large sea slug up to 12 cm long. I guess this problem is related to X axis seems to not register the endstop immediately and results in a split second of grinding sound. Disabling QUICK_HOME is definitely a solution... but this problem has been around for a while and not necessarily associated with TMC and sensorless homing. * X/Y_HOMING_SENSITIVITY is used for tuning the trigger sensitivity. is the number one paste tool since 2002. A few things got in the way :) I've just re-flashed with latest bugfix-2.0.x today and checked that IMPROVE_HOMING_RELIABILITY is switched off. * Lower value make the system MORE sensitive. So my guess is that with true endstops, the faster speed is okay, however with Sensorless, it causes either noise that blocks the bump, or less power at the faster speed, so the bump doesn't register? * * X/Y/Z_HOMING_SENSITIVITY is used for tuning the trigger sensitivity. Y axis still homes twice as expected - is that normal? I have this sneaky feeling that there is something nasty lurking in the endstops.cpp code that is disabling the X endstop, when QUICK_HOME is in effect, and whilst I took a look through the code it quickly exceeded my capabilities in C++ and my will to live. About Marlin Configs: Ender-3 - SKR 1.3 - Marlin-bugfix-2.0.x - 940ff8e - @drewzh I did not recognize it badly so I had a few hours in this. Have a question about this project? M502 --> resetting the values to the hardcoded params Could anyone check and report? I do not know if this is related, but it is possible that sensorless homing issues may be caused by TMCStepper 0.7.0. Setting TMC bump sensitivity (M914) via terminal only adjust TMC bump sensitivity for the X stepper driver but not for the Y stepper driver (at least for me). In either case, Y does not grind for me. (For example { 5, 7, 2 }) Then try quick homing several times. The combination of IMPROVE_HOMING_RELIABILITYwith the TMC2209s seems to have been what results in harsh homing. Maybe this is related to #14464 ? @boelle Yes, unfortunately so - I update to the latest bugfix branch almost every week in hopes that it's somehow magically solves, but alas... still the same :(. This issue has been automatically locked since there has not been any recent activity after it was closed. Start high, for example M914 X192 Y192 and then decrease the value until it only triggers when bumping the end of the rails. The text was updated successfully, but these errors were encountered: The boot process should initiate the LCD variables accordingly but it's possible it isn't working correctly with TMC5160 (or others). A quick test for the theory would be to configure HOMING_BUMP_MM asymmetric for x and y by + SENSORLESS_BACKOFF_MM of that axis. When paired with the solution proposed by @sadiwali, homing is as silent and soft as it has ever been. I encountered it on my hypercube running Marlin 1.1.8 on a MKR Gen L v1.0 with DRV8825 drivers... the X axis endstop appeared to be disabled and the print head attempted to bury itself in the Y axis carriage, where it juddered until it timed out. If the head was in a position after a print such that Y endstop was encountered first there was no problem. No other symptoms other than a harsh X home. * Higher values make the system LESS sensitive. Since the board equipped with EEPROM, Marlin has stored the sensitivity data (in my case 0) and whenever I was uploading a new software, used the EEPROM stored value. SKR 1.4 Turbo + TMC2209. Actually tried all the things here, but not helped. @bthome, @CSHoffie, can you guys check with an oscilloscope or multimeter that the DIAG pin of your TMC2209 on the griding axis is not asserted when the caret hits the limit? M914 X55 stops without reaching the end of the rail, whereas M914 X54 hits and grinds at the end of the rail for ~4 seconds. Well I just replaced the speed back to 20 * 60, and not only did it fix the problem, but I was also able to significantly drop the TMC Bump Sensitivity value (X & Y from 65 back to 25). I never said or assumed you're a company and work for profit? When using SENSORLESS_HOMING with TMC2209 drivers. Have a question about this project? Changing the source code and re-flashing the firmware does not change the contents of EEPROM. This should be fixed with PR #14008 thanks to @marcio-ao. Actual behavior: Axis don't move, X/Y endstops are triggered. This issue is stale because it has been open 30 days with no activity. Marlin Firmware Open Source 3D Printer Driver. // Homing speeds (mm/min) I'm really surprised given how popular the TMC2209's are, that nobody with domain knowledge has tackled this. * Higher values make the system LESS sensitive. Anyway this is still happening so I would like to see this issue reopened. Homing individually seems to stop the behaviour, i.e I can issue constant G28 X commands and not have a single instance of the grinding behaviour. The information (TEXT ONLY) provided by the Marine Life Information Network (MarLIN) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Second day, with no changes, it started doing the "grinding" sound on X axis when homing X and Y together. IMAGES and other media featured on this page are each governed by their own terms and conditions and they may or may not be available for reuse. If you have solved the QuickHome begins with a diagonal move to where the endstops are. The humpback whale Megaptera novaeangliae is a baleen whale and can be recognised as such by the plates of baleen (rather than teeth) suspended from the upper jaw and the two blowholes on the upper body. If your builds are using this version, please update them to 0.7.1 and re-test. X axis should hit the endstop softly and register the stop immediately. BIGTREETECH SKR V1.4 Turbo 32bit Controller Panel Board for 3D Printer Compatible With12864LCD/ TFT24 Support 8825/TMC2208/Tmc2130 (with 5TMC2209): This is the heart of this upgrade.The stock board is an 8-bit board and this one is 32-bit with a bunch of better features like sensorless homing and UART. Sign in Using 'Home X' or 'Home Y' on the LCD screen, or G28 X and G28 … Right now I'm having issues making sensorless homing to work. Sensorless homing works fine and running M122 , returns the correct values from EEPROM for all three of these commits. Now homing the individual axes begins. I just hope someone be cleverer than myself can pin this down. Sorry took me longer to test as the rebase wasn't as smooth as I expected. Interesting - I just checked my platformio libdeps and TMCStepper is at 0.7.1...I wonder if the update to bugfix was just a red herring and it's actually this library that's fixed it? chapter. Not familiar enough with the code and electronics to say for certain. The X axis hits the endstop abruptly, whilst the Y endstop is very soft. I remember thinking, cool, faster XY homing. I don't think this has lacked activity. It will help you when you have to diagnose the errors on-screen, and it will help you even more, if you use the command sets through octoprint. But I won't be testing sensorless homing on the 2209's again unless someone hints that it's actually been fixed. I'm running the SKR1.4 Turbo + TMC2209 V1.2 on the latest Marlin bugfix 2.0.x, and having the same issue. Set a new target heated bed temperature and continue without waiting. If X homes before Y, then X grinds, and vice versa. It has a ring of eight or nine upright feathery gills close to the posterior end, which are quickly retracted when a disturbance is sensed. I don't currently use my delta, and my current printer has A4988 steppers, so I can't check. * Too low values can lead to false positives, while too high values will collide the axis without triggering. Without the feature, M914 X100 Y128 seems to work really well. That's the case for me. After homing both axes are backed up a bit, by the same amount, to avoid grinding. well there are many updates applied every day/week and you will need to watch the commits to figure out if any update might have fixed the problem, marlin is not a company and we all work for free. In short - the root cause seems to be IMPROVE_HOMING_RELIABILITY. reopened. I use the waterott TMC2130s. More like request to look at that. Did I miss something in configuration process ? The TMC2208 problem has been present ever since. Sign in al., today Marlin drives most of the world's 3D printers. I also noticed that homing a single axis, also makes the opposite axis 'twitch' after being homed - not sure if this is expected or a previously seen behaviour? Completely off topic (kind of), but the X axis now homes 3 times, twice as normal and then after the second home, a bigger back off and a 3rd home is performed. The already hit axis can't move forward and backs up to make the second try - what works. Ah, that wouldn't be the issue here then, this has been an issue for over a year. For those of you, like me, who are into 3D printing, here is a quick, and VERY helpful set of marlin gcodes for your Marlin firmware. I'd have to go back and test again, but I'm currently running a very long print. Most recent Marlin 2.x bugfix G28 XY. The text was updated successfully, but these errors were encountered: Here's a clearer video of the behaviour: Successfully merging a pull request may close this issue. I'll try to debug the IMPROVE_HOMING_RELIABILITY feature later and post updates. The humback whale is relatively robust rorqual and can reach up to 16 m in length. The impossibility of safe automatic sensorless homing. I am also running an SKR 1.3 with genuine 5160 Watterott drivers in SPI/sensorless homing mode on an Ender-3 with the bugfix-2.0.x commit (940ff8e) from yesterday and the a613bca commit from 5/10/19. In the end, sensorless homing in working fine (only tested on X only yet) with values defined in config_adv.h, but it’s very confusing behavior. Even with -64 sensitivity I can't make it to work. Thanks for your suggestion but this isn't related. This is reported by not only myself, but another member of the "BIQU SKR Owners Group" over on Facebook:, Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Sorry in advance if you consider this as a “support” question but I don’t feel it is. It's possible the issue only presents itself the first time you've enabled TMC5160 in config. However for X and Y, bump homing makes things a lot more stable so I have bump enabled for X/Y and disabled for Z. Tweaking the sensitivity is actually quite easy. The main culprit for me was making sure that If you wanna get rid of this problem, give out the following commands: M502 --> resetting the values to the hardcoded params #18563. Right ? See M422 for Z-Stepper automatic alignment parameter selection. privacy statement. I found that enabling CODEPENDENT_XY_HOMING and as a side effect, disabling QUICK_HOME, forces the axis to be homed in sequence rather at the same time, resulting in a perfectly quiet homing sequence. You signed in with another tab or window. I didn't find that changing the sensitivity affected this behaviour. As soon as I home X and Y together (for e.g, with G28 XY), I get the grinding issue (about 90% of the time). Since the board equipped with EEPROM, Marlin has stored the sensitivity data (in my case 0) and whenever I was uploading a new software, used the EEPROM stored value. G28 and X grinds (Y does not), G28 X = No grind. Please add a reply if you want to keep this issue active, otherwise it will be automatically closed within 7 days. If that diagonal hits the corner nearly perfect always one endstop hits first and the move stops. We’ll occasionally send you account related emails. This issue has had no activity in the last 30 days. I guess what is happening here is - in short: SPI / UART interface of the TMCxxxx wired to MCU (stand-alone mode does not work) 3. Configs: If this is connected to the TMC2208 problem then that problem was caused by changes to Marlin in this commit .. If you wanna get rid of this problem, give out the following commands: @fungustoe if QUICK_HOME were that fundamentally broken more of us would be crashing our printers all the time. Disabling QUICK_HOME solved the problem and it mattered not, which Axis homed first. We’ll occasionally send you account related emails. It failed 20 tests on 800ma and failed 0 on 200ma. A few prerequisites are needed to use sensorless homing: 1. M500 --> store it. Lack of Activity #define HOMING_FEEDRATE_XY (20 * 60) i'm having the same issue with TMC 2209. oki, if you have the same issue we can reopen and even slam the confirmed label on it. The forehead rises at a shallow angle and has a slight bump. With my latest compile I re-enabled quick homing to see if I could narrow it down using different configs, but no luck so far. Latest bug fix Marlin 2.0. Was wondering why the last code made me increase this value so much. With bump sensitivity at 35 for TMC2130 stepper drivers I ran 100 tests with motor current at 800ma and 200ma without changing the bump sensitivity. Each axis is backed off and re-bumped according to the [XYZ]_HOME_BUMP_MM and HOMING_BUMP_DIVISOR settings. I have some issues with Sensorless Homing again as well. If you'd like me to diagnose further, just tell me what I can test, I have no idea where to start. I get quite a decent amount of false positives and setting the Bump Sensitivity to a higher value doesn't affect anything but i can't really explain why the issue occurs. By clicking “Sign up for GitHub”, you agree to our terms of service and No update from me. With the feature enabled, same settings make homing too sensitive. Especially the 'Additional difficulties with Quick- and DELTA- Homing.' The rocker link provides a progressive leverage ratio for the rear shock for small bump sensitivity and the feeling of a long travel system on large drops and rocks. to your account, Bonjour à tous, Changed to: Marlin uses the EEPROM to store the printer settings and loads them up the next time the machine powers up. Does the behaviour change after powering the printer off and on again? Successfully merging a pull request may close this issue.

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