I see to possible scenarios (or three). You might see if it'll work if homing in the - direction. Hi Bob, Even though this makes sense in the grand-scheme of things, it was a nuisance in my case. TMC lib is 0.7.1 I'm still on 1.1.0 RC6 (@Alex9779 's Marlin-BigBox-Dual-RC build) In summary, I still think it's a bug in the firmware and I'm very tempted to try the new release and see if the problem goes away. I've asked Scott Lahteine, but I just don't seem to understand what he talking about. This could be set up for any axis with two drive motors. But I do have questions? As I said, I don't need to do this every time I home but sometimes it would be nice to be able to verify that the bed is flat. I just saw another possibly bigger problem. Hi, First of , good job on the firmware, it has come a long way since I started using it (about 2yrs ago.) So, is this something that is already supported? Successfully merging a pull request may close this issue. If homing in the + direction then Z1 is the Z_MAX endstop. There needs to be a tutorial on how to do this, to some degree. I wanted to be able to place the probe in any arbitrary point on the bed/PCB and start the leveling. I've been reviewing the Marlin issues list since the recent release of 1.1.0 firmware and a great many MBL issues appear to have been fixed. This issue has been automatically locked since there has not been any recent activity after it was closed. What I ended up doing was completely rebuilding my X and Z axes. G28 disables bed leveling. Now for bed leveling I will consider the nozzle of E0 as the actual probe? I would like to use optical micro switches and make up some flags, so there no interference if the bed move up or down. The only tool required is a piece of paper or a feeler gauge. This is what I have in the platformio.ini Positive values are away from the bed; negative values are closer. When you build Marlin you have the option to include one of 5 different bed leveling systems. JoelLisenby's GitHub TEVO-Tarantula-I3-Marlin-Firmware. I guess I just don't understand the homing process as it is currently implemented with dual motors and end stops. But the problem is that when the nozzle should go up it goes down and when the nozzle should go down it goes up. Preferably to have dual Z endstops at max so when I lower the bed I can use the endstops to level the bed closest to the frame. It doesn't seem like it would require that any offsets be saved, just move each axis motor till the associated end stop trips and zero them there. Workaround: An added bonus for this is the limit on Z max. (Marlin 2.x) With S3, the (0…n-1) Y index of the mesh value to modify. Use the XMax end stop pins for the Z2 end stop switch. I'm using Marlin RC7 and I enabled Auto Bed Leveling Grid option. On my machine I home in the + direction with the Z_MIN and the Z_MAX endstops at the top. Mesh Bed Leveling (MBL) allows interactively measuring a Z height mesh without a bed probe. #endif. To home with the probe enableZ_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN. Thanks for this. Skip navigation ... MKS Gen 1.4 - Dual Z steppers with Marlin firmware (Part one) - Duration: 8:30. Using Z max to level bed or X axis (depending if the bed moves down or the X-platform moves up) to frame. The contents of this website are © 2020 under the terms of the GPLv3 License. You must be homing in the - direction. A nice feature would be to use both Z_DUAL_ENDSTOPS (2 Z endstops) for initial leveling and the probe for ABL / MBL. ... and/or Z axes. Each leveling system comes with its own set of options and makes G29 behave differently, so documentation for these G-codes is divided up into 5 separate pages. # if ENABLED(LCD_BED_LEVELING) # define MBL_Z_STEP 0.025 // Step size while manually probing Z axis. What about the probe, when does it come into play? How to level your bed with the dual z min. to your account. It looks like, for the moment, it is not possible to home Z1 + Z2 using a leveling sensor. The Z axis is homed last if the direction is -. You must be homing in the - direction. # define LCD_PROBE_Z_RANGE 4 // Z Range centered on Z_MIN_POS for LCD Z adjustment # define LEVEL_BED_CORNERS // Add an option to move between corners # endif /* * * Commands to execute at the end of G29 probing. Dual Z End Stops on Mini E3 V2 in Marlin? What is this? Have a question about this project? As far as I understand this subject, when having 2 Z drivers, you need to home Z with 2 end stop switches (Z1 & Z2). My second Z stepper motor is connected to the previously unused E1 stepper controller on my RAMPS 1.4 equivalent board. Would be nice to be able to configure if min or max will be used. Hello, I am configuring Marlin 2.0.x with sensorless probing which works fine. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. Dual Y axis provide a guideway for a more stable and level moving stage of the build platform. 1 year ago. Adjust Z so a piece of paper can just pass under the nozzle. It is likely that one of the Z-Axis is out of level after a while. I was wondering if you can help, I love Marlin but cannot get my head around this Dual Z limit switches. Similar to AUTO_BED_LEVELING_BILINEAR with PROBE_MANUALLY but uses less SRAM. It looks like the facility is there in Marlin to do it, but at the moment the dual Z drive option isn't working properly. A rig to mount a small 9G RC servo, with an arm mounted Z-endstop, next to the extruder on a K8200/3Drag to enable the Auto bed leveling feature in recent Marlin. Please open a new issue for related bugs. See M422 for Z-Stepper automatic alignment parameter selection. Use the controller wheel to adjust Z so that a piece of paper can just pass under the nozzle. I activated DualZMotor and can now use DualZ Endstops. Above the given Z height, leveling compensation will no longer be applied. where do I go to change the direction of the stepper motors for dual Z? I followed this, YouTube - Setting Up Auto Bed Leveling (Tevo Tarantula), for setting up the auto bed leveling sensor but it just got me messed-up even more, see Tevo Tarantula incorrectly auto leveling of bed. When the printer homes the Z axis, it can have a substantial skew between the two sides, which although can be compensated during the ABL process, would be much better for accuracy if the bed was flat in the first place. Any of the other five endstops can be assigned to Z2. I upgraded my X5S to Ramps1.4. I have set Marlin 2.0.x on a SKR Pro v1.1 with TMC 2209 for a dual pellet extruder custom printer. I then looked at config_adv.h and found that the dual X and dual Y had the reverse motor option. I haven't tried that method. For automatic probe-based leveling enable one of the AUTO_BED_LEVELING_* options instead. By clicking “Sign up for GitHub”, you agree to our terms of service and I have two motors and drivers on my Z axis. Hi guys. You signed in with another tab or window. To home with the probe enable Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN. (Marlin 2.x) With S3, the (0…n-1) X index of the mesh value to modify. Does Repetier Firmware support dual Z stepper controllers? Repeat steps 3-4 until completed. The text was updated successfully, but these errors were encountered: It's called Z_DUAL_ENDSTOPS. I tried the E1 direction in config.h but that didn't work. If homing in the - direction then Z1 is the Z_MIN endstop. Use G29 S1 to move to the first point for Z adjustment. (Marlin 1.x) Modify some mesh points and view the new mesh: (Marlin 2.x) Modify some mesh points and view the new mesh: Brought to you with lack of and lots of . Already on GitHub? *View All Steps for S… MBL uses the mesh to compensate for variations in height across the bed. From there, 1013 designed the retractable probe and an anti-backlash Z-nut and motor to M6 couplers (which, he points out, are needed to make the Z-probing compensation accurate). Anyway, it would be nice to have two switches set up where each motor could be driven until it's respective switch is tripped to auto reset the main bed level. I am using a mechanical end stop on the z axis with leadscrews and dual stepper motors. The re-assigned (Z2) endstop has to be physically attached to one of the Z axis rails. G32 Probe Z and calibrate with FPU probes the bed at 3 points and updates transformation matrix for bed leveling compensation. Anet A8 Plus upgrade to Marlin 2.0.x Posted on October 23, 2019 by Thomas.Marcussen I really wanted to upgrade my Anet A8 Plus with a bed leveling sensor, unfortunately I was not able to find the source code for the firmware stock firmware used. The proper solution is a 2nd Z end stop switch for the Z1 leadscrew, combined with Dual Z Steppers configured in Marlin (Configuration_adv.h and Configuration.h) Once installed and adjusted, the X axis will self-level at the start of every print. You'd have to change a few of the defines and disable ENDSTOPS_ALWAYS_ON_DEFAULT. A single Z endstop is supported. Mesh Bed Leveling from the host: Use G29 S0 to get the current status and mesh. I have a drawing where I … I have a prusa i3 clone 3D printer, which is running marlin v 1.1.8 and configured to use bilinear bed leveling. The Z_MIN endstop will NOT be used. Yes, it would be done every time G28 is run. Adjust Z so a piece of paper can just pass under the nozzle. It works very well with my BLTouch for bed leveling but over time the two sides drift away from each other. Press the controller button to save the Z value and move to the next point. When using a bed leveling sensor you'll not be able to put those switches to Z min, because you are using the leveling sensor, so you need to put them to Z MAX. Bilinear bed leveling with Standard Hot End, BL Touch v3.1 (using Z Min port as endstop), Dual Z steppers (Z0=Z, Z1=E1), BTT TFT35 v3 and BTT SKR1.4 Turbo board - TMC 2209 UART mode. I'm running BLTouch, plug into End stop min, and would like to add this feature, to my Marlin 1.19, but don't understand the full setup, as it so confusing, can you post what needs to be altered in Config.h and Config.adv.h, please if you have the time. For example I … The Z_MIN endstop will NOT be used. I'd like to jump in here for a second. To home using the Z endstop enable Z_MIN_PROBE_ENDSTOP. That is optional. It's homed first if the direction is +. I seem to remember reading about this here awhile back and would like to find out if it's a doable thing. I have the small picture framing clips (not the bulldogs!). Sign in I would still want to use the BLTouch for homing and probing. Manually modify a single point with X Y Z parameters. Press question mark to learn the rest of the keyboard shortcuts I'm thinking this would be a separate command because it only needs to be done occasionally. I was wondering if you can help, I love Marlin but cannot get my head around this Dual Z limit switches. Any of the other five endstops can be assigned to Z2. [Support] 2 motor Z-axis leveling switches and probe for homing. with that in mind, is this process a part of the G28 command and done every time? You can home the Z axis with either the probe or the endstops. I had to modify the probe holder by zenmaster a bit to account for my servo horn being a tad to wide and chisel shaped, not fitting in the original design. Mesh Bed Leveling using an LCD controller: (Requires LCD_BED_LEVELING). The Megatronics board looks to have 6 stepper drivers, 3 for XYZ axis and 3 for extruders. As usual with this arrangement, you must use M584 to assign the 2, 3 or 4 drivers to the Z axis Note that the Z driver (drive 2 on Duet2) has a dual socket wired in series for powering two z motors at once. With this option enabled, by default Marlin will use the Z_MIN_PROBE_PIN specified in your board’s pins file (usually the X or Z MAX endstop pin since these are the most likely to be unused). You have to use M500 to save the bed leveling data to EEPROM, otherwise the data will be lost when you restart (or reconnect) the printer. (See also M421.). Use M501 to reload your last-saved bed leveling from EEPROM. How to level your bed with the dual z min. If there’s an existing mesh, you can send M420 S1 to use it. Use G29 S2 to save the Z value and move to the next point. Marlin has a feature, Z_DUAL_STEPPER_DRIVERS that automatically uses the unused E stepper controller. Set X_DUAL_STEPPER_DRIVERS to use a second X motor. For homing, you are correct. Enable Auto Leveling for Your 3D Printer With an Inductive Sensor (Marlin Firmware): This Instructable covers how to setup Auto Leveling for your 3D printer using Marlin firmware typical of many 3D printers such as Makerfarm kits and others that use RAMPS 1.4 + Arduino based controllers with an Inductive sensor. I have configured the Extruder count in Marlin to 2, changed the temp sensor settings, but i couldnt get my slicer software, Matter Control to detect it as dual … I have Z2 using E1 plug and I cannot find anywhere to change the rotation direction. Swap the two connectors of one coil to reverse the steppers direction. It's homed first if the direction is +. Press J to jump to the feed. With DualZ Motor control and DualZ Endstops each ZMotor is driven until it reaches its own endstop. 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