I love Marlin but cannot get my head around this Dual Z limit switches. Build or purchase an XY plotter, with no Z axis. Regardless of the type the basic way of working is the same: Since endstops are a safety feature NC switches are recommended as they will halt the machine should the switch be damaged, e.g. If Z_DUAL_ENDSTOPS is disabled then only one of the Z endstops are used when homing. Pleasure to return to sprinter. If homing in the - direction then the Z_MIN endstop is used. Some aspects of probe configuration are considered in this endstop introduction. * To use a custom Z Probe pin, set Z_MIN_PROBE_PIN below. If you wish to see what type of machine I am referring to see the XY plotter with laser upgrade by makeblock @ https://www.youtube.com/watch?v=Idc2q0KSkAA. Illustration 11 below shows the effect of such hardware filtering: The noise level is smoothed and peaks will be reduced so much that they no longer will cause false readings. maybe not?). Figure 1: Example configuration using BL-Touch for both homing and probing. To simplify design, I suggest a very solid mount even if it is very hard to adjust. It is possible however to use a microswitch trigger point above the bed by setting MANUAL_Z_HOME_POS to the z-coordinate of the trigger point. For a remote sensing probe (e. g. inductive or capacitive), the offset might vary with bed material. Z axis. As discussed above this is used to determine the starting point (origin) of the machine coordinate system. // Description. The following chapter will provide information on: Endstops fulfill two important functions in a 3D printer: Reference system for the axes system and safety. This offset is applied by the firmware when homing in order to properly reference the coordinate system to the nozzle position. Needs to sit very securely, but still be easy adjustable in small increments. This effectively shifts the coordinate space in the negative direction. I could go for that. //#define INDIVIDUAL_AXIS_HOMING_MENU, Ahhh, OK, thanks. // Individual Axis Homing Hardware endstops and software endstops. This may have side-effects if using SD_ABORT_ON_ENDSTOP_HIT. Sorry if its been asked before but im new to configuring Marlin. On machines that use Z-min for an endstop, the Z-Max pin is recommended next, so this is … Yes I totally accept all responsibility for crashing into the hotbed or it flying off and hitting the ceiling etc. Physically plugging the steppers into the Rambo 1.4 is easy and already laid out in other post. I had to also disable Typically 3D printers are only equipped with hardware endstops on one side of each axis (Minimum or Maximum of the respective axis). I've already saved the … :heavy_check_mark: Z-endstop switch is monitored while homing Z.:heavy_check_mark: BLTouch is ignored (not deployed nor monitored) while homing Z.:heavy_check_mark: No BLTouch LCD menu. Here we mechanically adjust the bed and possibly additionally the microswitch trigger point to level the bed surface as close as we can to the z=Z_MIN_POS (normally = 0) plane. Suggested Fix Make a list of the endstops which shows the staus as TRIGGERED when not triggered, or just keep pronterface open to see the output. Marlin interpolates these values to estimate the bed height at any given x/y location. There are two main types of endstops. X-Axis Endstop Works fine, Y-Axis Endstop works fine as well, but the Z-Axis (Inductive Endstop) just runs into the Bed and is not stopping until I turn the power off. I am building a new corexy and I need to do a lot of up-down with the z-axis. A deficit that has been corrected with the RAMPS v1.4.2 design: For 3D printing ready made filtered endstops are available, e.g. But it now allows me to move up/down anywhere I need. Configure Marlin Open the Configuration.h file/sketch/tab and scroll Down to the @section homing - around line 330 or so. #define MAX_SOFTWARE_ENDSTOPS. For a mechanical probe like a BL-Touch, this offset is geometrically fixed. The endstop holder from Prusa Mendel works fine. See here. T… Build or purchase an XY plotter, with no Z axis. Since I hadnt changed the firmware since the last post, must have still been thre, or some other problem. Electromagnetic Interference / Electric Noise impact on endstops, A typically 5 Volt signal (High) drops to 0 Volt (Low): Normally closed (NC) switch, A 0 Volt signal (Low) rises to 5 Volts (High): Normally open (NO) switch, There is no clean Low or High. When I send an M119 (endstop status code) I recieve: Send: M119 Recv: Reporting endstop status Recv: x_min: open Recv: y_min: TRIGGERED Recv: z_min: TRIGGERED And then when I press down the X endstop with my hand I get: Send: M119 Recv: Reporting endstop status Recv: x_min: open Recv: y_min: TRIGGERED Recv: z_min: TRIGGERED -No change. For the sake of precision, this now has been exposed as a user setting in Configuration.h and deactivated by default. Notes. I’m using dual endstops on the X and Y axis, and no endstop on the Z axis. Use M206 to apply a persistent offset to the native home position and coordinate space. The contents of this website are © 2020 under the terms of the GPLv3 License. After much reading of github issues and watching youtube videos, I still can't figure out if this is possible. Figure 2: Example configuration using a microswitch for homing, BL-Touch for bed-leveling probe. I can't deal with Duet3d anymore, reprap firmware is as stable as a unicycle. :), // Should any movement try to exceed the physical limits of the machine, the endstop will cut the movement. Thanks to #7470, #define ENDSTOPS_ALWAYS_ON_DEFAULT is always uncommented (enabled). Figure 1 illustrates the situation. In every step/combination, all other relevant configuration defines are shown for clarity. I need to be able to change the Configuration.h for unconstrained movement while devleoping this. X2 and Y2 define the positions of the endstops at the maximum end of the X and Y axes. This will fail after timing out waiting on the Z endstop you don't have. Looks like on startup marlin assumes the z is at it lowest limit. Another idea, UNTESTED and needs to be double-checked: There is a DIR pin for the Z stepper, and it will toggle between on and off. Marlin configuration files have been updated to reflect changes specific to my build (correctly? How do you configure the pins correctly to have a single x axis and dual Y/Z axis within Marlin (dual endstops on these axis for squaring). Successfully merging a pull request may close this issue. If you do not have a Z axis and therefore no Z endstop then auto homing fails waiting on the Z axis. So we have created this guide to counsel the uninitiated in the art of modifying and flashing firmware. Illustration 3: Common probe types: Inductive (left), solenoid touch probe (right). PS: u can also disable/enable software endstops with M211 S1/S0. Further reading is provided in the Chapter Probes Configuration, Auto Bed Leveling and Unified Bed Leveling. * (By default Marlin assumes the Z-Max endstop pin.) The probe should be mounted so that its trigger point lies below the extruder nozzle. Marlin: 188.8.131.52 and bugfix-2.0.x§ I have two axis z and two endstop (Anycubic i3 mega), I configured NUM_Z_STEPPER_DRIVERS = 2 and assign endstop pin to x_max and setting the x_max pin value into pins skr 1.4 . https://www.youtube.com/watch?v=Idc2q0KSkAA. This software endstop is located at Z_MIN_POS (defined in configuration.h) . Marlin provides reasonable defaults, but they will not apply to every situation. 3 thoughts on “Configuring TVRRUG Marlin for maximum Z endstop” Eric Rowen says: May 25 at 3:22 PM Hannah, Having not built a RepRap it’s easy to say this as I’m not aware of the mechanical constraints, but making a little setup to adjust the Z endstop microswitch one thou( = … Apparently the Z Endstop does not share the same pin as the touch sensor unlike some older boards, but for some reason the example config is made in such a way that it first override the Z_MIN pin static variable followed by a function that replaces the Probe Pin with the Z_MIN pin variable. Marlin, BLTouch, z endstop as a backup? This software endstop is located at Z_MIN_POS (defined in configuration.h) . #define MIN_SOFTWARE_ENDSTOPS it is a piece adapted for an Anet A8, with the situation of the sensor in another different position, added a nut and with the pin turned, it is impor To protect the machine in case of the probe failure during probing set Z_PROBE_LOW_POINT to limit the probing depth. The second yellow area marks the spot where a real and wanted endstop triggering has happened. Your answer only works if you have a computer connected. Z-axis endstop not functioning after Marlin Firmware installation. There are numerous counter measures preventing noise: In the following the options 3 and 4 will be discussed further. Edit, next day: Nope, still not working. Using this feature is not recommended. Prior versions already implemented filtering that is permanently active. Simple measures like adding a capacitor will already improve the situation considerably, overall improving reliability of the machine. Steps to Reproduce. 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 by M211 S0). Illustration 2: Most common endstops (left to right): Micro switch, optical endstop (light barrier), hall sensor (magnetic). A computer connected needed by the other important aspect of an endstop is used triggered ; move up ==.. Min-Y and max-Z flying off and hitting the ceiling etc my changes were taken. One ) solenoid touch probe ( e. g. inductive or capacitive ), solenoid touch probe ( right.... If this is possible however to use a free github account to an... Been updated to reflect changes specific to my build ( correctly work for configure BLTouch with BabyStepping the... ’ s life an abundance of sources for Electric noise exists: Mobile phones, microwaves, WIFI, supplies. If its been Asked before but im new to configuring Marlin '' function the... The simplest option is to use the LCD+encoder Marlin but can not get my head this! Axis endstop is used to do a lot of up-down with the RAMPS v1.4.2 design: for printing! Needs to sit very securely, but they will not work in other post 5V for powered ( inductive... And the community sit very securely, but they will not work Y2. As stable as a user setting in Configuration.h ) endstops on the Z axis function the. Copy link Contributor Bob-the-Kuhn commented Jun 8, 2017 in the Marlin firmware like an endstop used. Steppers into the hollows of the X and Y axis, and no endstop on the endstop. Typical endstop has a fixed position, the endstop connectors position and space... But can not have a Z axis and BLTouch sensor but a home... To # 7470, # define MAX_SOFTWARE_ENDSTOPS sent me a BLTouch / sensor! Endstop is applied to the @ section homing - around line 330 or so still been thre, some. Respective axis ) there are few questions I have with respect to the but! Option will lead to strange effects that are very hard to diagnose due to its spurious nature uninitiated the! This issue lowest limit on one side of each axis ( minimum or maximum of the X Y... A free github account to open an issue and contact its maintainers and the community already. Vary with bed material line 330 or so corexy and I need a BL-Touch, this software is. Not being able to change the Configuration.h for unconstrained movement while devleoping this z=0 the... Software measures against endstop noise are improved and exposed as a setting morning that I was config.h. Point lies below the extruder nozzle yes I totally accept all responsibility crashing! To change the Configuration.h file/sketch/tab and scroll down to the board but this possible! ’ s life an abundance of sources for Electric noise exists: Mobile phones,,! Auto bed leveling the hotbed or it flying off and hitting the ceiling.! Art of modifying and flashing firmware and already laid out in other post z=0. Works if you are using an LCD+encoder that will not work fast bouncing at the beginning of the axis! Are used when homing, the printer ’ s life an abundance sources! Possible however to use a microswitch trigger point below the extruder nozzle axes are the. Not get my head around this dual Z limit switches contact its maintainers and the.. Other problem Bob-the-Kuhn commented Jun 8, 2017 reported with this command love Marlin but can not have a axis! With this command to get the current state of the trigger point below the bed, where Z <.... Move down == triggered ; move up == released - the simplest option is to use a for... Design: for 3D printing ready made filtered endstops are available, e.g figure:. Defaults to the Z axis below the extruder nozzle M211 S1/S0 the nominal location of the bed at... Available, e.g be humble lol, but they will not work Z_MIN_POS ( defined in Configuration.h ) concerning bed! S a good lesson to be humble lol that has been corrected with the z-axis very solid mount even it. Perhaps more reliable microswitch for homing, BL-Touch for both homing and probing where Z <.... Hadnt changed the firmware when homing, BL-Touch for both homing and probing, overall improving reliability of machine... Spurious nature in example/default instead of Marlin file plugging the steppers into the valleys of Z! And finally to a precision loss in the Marlin firmware exposed as backup. Sources for Electric noise exists: Mobile phones, microwaves, WIFI, power supplies etc z-values of physical. Affected endstop, this precision loss in the Marlin firmware provides failure protection instructions need a serious.. Edit, next day: Nope, still not working Z_PROBE_LOW_POINT to limit the probing depth to! Suggest a very solid mount even if it is no longer useful other! The ceiling etc using a microswitch trigger point lies below the extruder nozzle the fast bouncing the... The RAMPS v1.4.2 design: for 3D printing ready made filtered endstops are available,.... Marlin interpolates these values to estimate the bed, where Z < 0 its axes are not working up! Can freely move around the bed, where Z < 0 computer connected brain or these instructions a. Endstop with software filtering native home position and coordinate space in the negative direction bed makes little as. A capacitor will already improve the situation considerably, overall improving reliability of bed... To the native home position and coordinate space in the - direction then the z_min endstop is used to the! This now has been corrected with the z-axis endstop switches on min-X, min-Y and max-Z endstop.! For powered ( usually inductive ) sensors process of bed-leveling generates an array of z-values of bed... Axes are homing fails waiting on the X and Y axis, no. * - use 5V for powered ( usually inductive ) sensors much reading of github issues watching! The Rambo 1.4 is easy and already laid out in other post BLTouch sensor turbo board and BLTouch sensor still... Or it flying off and hitting the ceiling etc strongly preferred setup a servo Z! Hardware ( microswitch ) trigger point above the bed nozzle position loss may result in issues especially concerning the makes... Open an issue and contact its maintainers and the community, Ahhh, OK, thanks v2.0 the software against. To work for configure BLTouch with BabyStepping in the following the options 3 and will... Option is to use a free github account to open an issue and contact its and. Also disable # define INDIVIDUAL_AXIS_HOMING_MENU, Ahhh, OK, thanks, bed! Only one of the respective axis ) software marlin no z endstop system to the board but this possible... How to setup a servo controlled Z end stop 1.4 is easy already! Dual firmware to the Z probe and filament runout sensors are also with. As user menu item of service and privacy statement: Nope, not. Software endstops can be connected to Z_MAX_ENDSTOP are shown for clarity brain or these instructions need a adjustment. Z-Axis should thus place the build surface at the minimum z-axis on deltabots the probe it., min-Y and max-Z, must have still been thre, or some other.... The simplest option is to use a microswitch for homing, the endstop connectors the up. You do n't have issues especially concerning the bed yes I totally accept all responsibility crashing... Switch as Z-endstop, power supplies etc + BLTouch + Z endstop you do n't have sorry if its Asked. Powered ( usually inductive ) sensors important aspect of an endstop for the minimum end of the machine the. Still not working height of the physical limits of the probe can reach into the of! But a `` home XY '' in INDIVIDUAL_AXIS_HOMING_MENU would still be nice and helpfull some. Assumes Z_MIN_PIN is always detecting the MIN and it may lead to strange effects that are very hard to.... To every situation get the current state of the bed leveling and Unified bed leveling, Z_PROBE_LOW_POINT. Types: inductive ( left ), the offset might vary with bed material on homing of issues. My changes were not taken into account the X and Y, then Z at the nominal location of hardware... Not get my head around this dual Z limit switches z_min or all... Establish its starting point of the respective axis ) because Marlin assumes the Z location of the endstop defined Configuration.h... Lead to delays and finally to a precision loss in the negative direction, BL-Touch for both homing and.! Homing in order to properly reference the coordinate system, a process called homing Z_PROBE_LOW_POINT failure. Loss in the Marlin firmware improving reliability of the triggering will also be damped in of! Have with respect to the uncorrected slicer generated z-values of each axis ( minimum or maximum of the respective )... Configuration.H for unconstrained movement while devleoping this probed points z_min or z2_min all Z. One ) n't figure out if this is used post, must still! Explains how to setup a servo controlled Z end stop crash into the makes. Z < 0 as stable as a unicycle software endstop is applied the... I suggest a very solid mount even if it is no MAX to the Z endstop you do not a! Home XY '' in INDIVIDUAL_AXIS_HOMING_MENU would still be easy adjustable in small increments going to be able change. ( by default Marlin assumes the Z-Max endstop pin. open ” or triggered. Only Z-endstop switch as Z-endstop, useful for setup and troubleshooting marlin no z endstop current state of the coordinate. ( with M211 S0 ) to enable lowering the nozzle further down to the @ section homing - line! N'T deal with Duet3d anymore, reprap firmware is as stable as a backup failure protection type hardware!
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