There is conditional code for Deltas there, since it needs to home up all three axes at once. It still has (50*60) in the config. I just checked the current version of 1.1.9 (18.11.2018). G28 disables bed leveling. The G28 command is implemented in Marlin.cpp starting at line 996. Set the max feedrate for one or more axes (in current units-per-second). Without this, you may accidentally miss the bed when homing Z. The stepper motor receives step by step moving command from the controller. #define HOMING_FEEDRATE_Z (4*60) the Z probing at the G28 do always 2 probes, even if the MULTIPLE_PROBING is commented out. Notes. Changing to HOMING_FEEDRATE_XY (20*60) made homing safe for use. The Ender-3 will become a very popular printer, if not already, and many users will upgrade the Marlin firmware as I did. 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). Compiling firmware: “homing_feedrate now uses MM_M array instead” Help Hey folks - so I’m trying to upgrade my firmware, and I’m using Vcode and auto build Marlin with Marlin 2.0.bug fix and the BTT Skr mini v 1.2 confit files. You will need to make sure software endstops are DISABLED for Z after adding the probe. Homing is required before G29, M48, and some other procedures.. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. And with MULTIPLE_PROBING 2 the Z probing also is the same speed from first to second probe. Without a doubt a particularly critical step in setting up probes and automatic bed levelling within Marlin 2 is Z_SAFE_HOMING. (What is that about - i.e., why the hard-coded weird number 1.732?) To know this wo Uncomment Z_SAFE_HOMING. View the current setting with M503. Oftentimes in Marlin, speed or acceleration are expressed in [mm/s] or [mm/s2] but the feed is expressed in [mm/min]. Notes. [Marlin] M203 - Set Max Feedrate Update: 2020/09/18. Can someone explain to me the line in marlin "#define HOMING_FEEDRATE_Z (20*60)" as it relates to changing the Z homing speed? This will let you adjust the Z to a negative number for your offset. Wait for Homing XYZ to complete. #define Z_SAFE_HOMING. To do this, it sets the feedrate at 1.732 times the nominal homing feedrate with no comment. The DEFAULT_MAX_FEEDRATE (Maximum speed) of the individual axis and extruder motor are shown below. #define HOMING_FEEDRATE {50*60, 50*60, 4*60} Axis steps per unit. Homing feed rate. Set the max feedrate for one or more axes (in current units-per-second). 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. When Click to Begin appears, press the controller button to move to the first point. Changes to the original Marlin 2.0.7.1 files for SKR Mini E3 v2.0, Ender 3. If EEPROM_SETTINGS is enabled, these are saved with M500, loaded with … Description. 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 HOMING_FEEDRATE_Z (8*60) #define EEPROM_SETTINGS. This prevents your Z homing from occuring without prior X and Y homing. If homing is needed the LCD will blink the X Y Z indicators. This is the moving speed of the axis when homing in [mm/min]. The feedrate … A particularly critical step in setting up probes and automatic bed levelling within Marlin 2 Z_SAFE_HOMING... Keep leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically leveling. Without this, it sets the feedrate at 1.732 times the nominal homing feedrate with no.. 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