Updated Kossel XL config files for the latest Marlin

Marlin/example_configurations/delta/generic/Configuration.h

   #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-DELTA_EFFECTOR_OFFSET-DELTA_CARRIAGE_OFFSET)
 
   // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
-  #define DELTA_PRINTABLE_RADIUS 140
+  #define DELTA_PRINTABLE_RADIUS 140.0
 
   // Delta calibration menu
   // uncomment to add three points calibration menu option.

Marlin/example_configurations/delta/kossel_xl/Configuration.h

 // example_configurations/delta directory.
 //
 
-#define DELTA
-#if ENABLED(DELTA)
-
-  // Make delta curves from many straight lines (linear interpolation).
-  // This is a trade-off between visible corners (not enough segments)
-  // and processor overload (too many expensive sqrt calls).
-  #define DELTA_SEGMENTS_PER_SECOND 160
-
-  // NOTE NB all values for DELTA_* values MUST be floating point, so always have a decimal point in them
-
-  // Center-to-center distance of the holes in the diagonal push rods.
-  #define DELTA_DIAGONAL_ROD 317.3 + 2.5 // mm
-
-  // Horizontal offset from middle of printer to smooth rod center.
-  #define DELTA_SMOOTH_ROD_OFFSET 220.1 // mm
-
-  // Horizontal offset of the universal joints on the end effector.
-  #define DELTA_EFFECTOR_OFFSET 24.0 // mm
-
-  // Horizontal offset of the universal joints on the carriages.
-  #define DELTA_CARRIAGE_OFFSET 22.0 // mm
-
-  // Horizontal distance bridged by diagonal push rods when effector is centered.
-  #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-DELTA_EFFECTOR_OFFSET-DELTA_CARRIAGE_OFFSET + 1)
-
-  // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
-  #define DELTA_PRINTABLE_RADIUS 140.0
-
-#endif
-
 // @section info
 
 #if ENABLED(USE_AUTOMATIC_VERSIONING)
 // Uncomment this option to enable CoreXZ kinematics
 //#define COREXZ
 
+//===========================================================================
+//============================== Delta Settings =============================
+//===========================================================================
+// Enable DELTA kinematics and most of the default configuration for Deltas
+#define DELTA
+
+#if ENABLED(DELTA)
+
+  // Make delta curves from many straight lines (linear interpolation).
+  // This is a trade-off between visible corners (not enough segments)
+  // and processor overload (too many expensive sqrt calls).
+  #define DELTA_SEGMENTS_PER_SECOND 160
+
+  // NOTE NB all values for DELTA_* values MUST be floating point, so always have a decimal point in them
+
+  // Center-to-center distance of the holes in the diagonal push rods.
+  #define DELTA_DIAGONAL_ROD 317.3 + 2.5 // mm
+
+  // Horizontal offset from middle of printer to smooth rod center.
+  #define DELTA_SMOOTH_ROD_OFFSET 220.1 // mm
+
+  // Horizontal offset of the universal joints on the end effector.
+  #define DELTA_EFFECTOR_OFFSET 24.0 // mm
+
+  // Horizontal offset of the universal joints on the carriages.
+  #define DELTA_CARRIAGE_OFFSET 22.0 // mm
+
+  // Horizontal distance bridged by diagonal push rods when effector is centered.
+  #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET) + 1)
+
+  // Print surface diameter/2 minus unreachable space (avoid collisions with vertical towers).
+  #define DELTA_PRINTABLE_RADIUS 140.0
+
+  // Delta calibration menu
+  // uncomment to add three points calibration menu option.
+  // See http://minow.blogspot.com/index.html#4918805519571907051
+  // If needed, adjust the X, Y, Z calibration coordinates
+  // in ultralcd.cpp@lcd_delta_calibrate_menu()
+  //#define DELTA_CALIBRATION_MENU
+
+#endif
+
 // Enable this option for Toshiba steppers
 //#define CONFIG_STEPPERS_TOSHIBA
 
 // Setting the wrong pin may have unexpected and potentially disastrous consequences.
 // Use with caution and do your homework.
 //
-//#define Z_MIN_PROBE_ENDSTOP
+#define Z_MIN_PROBE_ENDSTOP
 
 // Enable Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN to use the Z_MIN_PIN for your Z_MIN_PROBE.
 // The Z_MIN_PIN will then be used for both Z-homing and probing.
-#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
+//#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
 
 // To use a probe you must enable one of the two options above!
 
 // @section machine
 
 // Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
-#define INVERT_X_DIR false
+#define INVERT_X_DIR false // DELTA does not invert
 #define INVERT_Y_DIR false
 #define INVERT_Z_DIR false
 
 #define INVERT_E3_DIR false
 
 // @section homing
-//#define MIN_Z_HEIGHT_FOR_HOMING 7 // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
+//#define MIN_Z_HEIGHT_FOR_HOMING 4 // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
                                     // Be sure you have this distance over your Z_MAX_POS in case.
 
 // ENDSTOP SETTINGS:
 // Sets direction of endstops when homing; 1=MAX, -1=MIN
 // :[-1,1]
-#define X_HOME_DIR 1
+#define X_HOME_DIR 1  // deltas always home to max
 #define Y_HOME_DIR 1
 #define Z_HOME_DIR 1
 
 // @section machine
 
 // Travel limits after homing (units are in mm)
-#define X_MIN_POS -DELTA_PRINTABLE_RADIUS
-#define Y_MIN_POS -DELTA_PRINTABLE_RADIUS
+#define X_MIN_POS -(DELTA_PRINTABLE_RADIUS)
+#define Y_MIN_POS -(DELTA_PRINTABLE_RADIUS)
 #define Z_MIN_POS 0
 #define X_MAX_POS DELTA_PRINTABLE_RADIUS
 #define Y_MAX_POS DELTA_PRINTABLE_RADIUS
 
   // Enable this to sample the bed in a grid (least squares solution).
   // Note: this feature generates 10KB extra code size.
-  #define AUTO_BED_LEVELING_GRID
+  #define AUTO_BED_LEVELING_GRID  // Deltas only support grid mode.
 
   #if ENABLED(AUTO_BED_LEVELING_GRID)
 
+    // Set the rectangle in which to probe
     #define DELTA_PROBEABLE_RADIUS (DELTA_PRINTABLE_RADIUS - 10)
-    #define LEFT_PROBE_BED_POSITION -DELTA_PROBEABLE_RADIUS
+    #define LEFT_PROBE_BED_POSITION -(DELTA_PROBEABLE_RADIUS)
     #define RIGHT_PROBE_BED_POSITION DELTA_PROBEABLE_RADIUS
-    #define FRONT_PROBE_BED_POSITION -DELTA_PROBEABLE_RADIUS
-    #define BACK_PROBE_BED_POSITION DELTA_PROBEABLE_RADIUS
+    #define FRONT_PROBE_BED_POSITION - (DELTA_PROBEABLE_RADIUS - 20)
+    #define BACK_PROBE_BED_POSITION DELTA_PROBEABLE_RADIUS - 40
 
-    #define MIN_PROBE_EDGE 20 // The Z probe minimum square sides can be no smaller than this.
+    #define MIN_PROBE_EDGE 10 // The Z probe minimum square sides can be no smaller than this.
 
     // Non-linear bed leveling will be used.
     // Compensate by interpolating between the nearest four Z probe values for each point.
     // Useful for deltas where the print surface may appear like a bowl or dome shape.
     // Works best with AUTO_BED_LEVELING_GRID_POINTS 5 or higher.
-    #define AUTO_BED_LEVELING_GRID_POINTS 7
+    #define AUTO_BED_LEVELING_GRID_POINTS 5
 
   #else  // !AUTO_BED_LEVELING_GRID
 
   //    |           |
   //    O-- FRONT --+
   //  (0,0)
-  #define X_PROBE_OFFSET_FROM_EXTRUDER 0.0     // X offset: -left  +right  [of the nozzle]
-  #define Y_PROBE_OFFSET_FROM_EXTRUDER 0.0     // Y offset: -front +behind [the nozzle] 
-  #define Z_PROBE_OFFSET_FROM_EXTRUDER 0.3     // Z offset: -below +above  [the nozzle]
+  #define X_PROBE_OFFSET_FROM_EXTRUDER 0.0     // Z probe to nozzle X offset: -left  +right
+  #define Y_PROBE_OFFSET_FROM_EXTRUDER 0.0     // Z probe to nozzle Y offset: -front +behind
+  #define Z_PROBE_OFFSET_FROM_EXTRUDER 0.3     // Z probe to nozzle Z offset: -below (always!)
 
-  #define XY_TRAVEL_SPEED 7000         // X and Y axis travel speed between probes, in mm/min.
+  #define XY_TRAVEL_SPEED 8000         // X and Y axis travel speed between probes, in mm/min.
 
   #define Z_RAISE_BEFORE_PROBING 20   // How much the Z axis will be raised before traveling to the first probing point.
-  #define Z_RAISE_BETWEEN_PROBINGS 5 // How much the Z axis will be raised when traveling from between next probing points.
+  #define Z_RAISE_BETWEEN_PROBINGS 10 // How much the Z axis will be raised when traveling from between next probing points.
   #define Z_RAISE_AFTER_PROBING 20    // How much the Z axis will be raised after the last probing point.
 
-  #define Z_PROBE_END_SCRIPT "G1 Z20 X0 Y0 F7000"
-//#define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10" // These commands will be executed in the end of G29 routine.
-                                                                            // Useful to retract a deployable Z probe.
+  //#define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10" // These commands will be executed in the end of G29 routine.
+                                                                             // Useful to retract a deployable Z probe.
 
   // Probes are sensors/switches that need to be activated before they can be used
   // and deactivated after their use.
 
   // A fix mounted probe, like the normal inductive probe, must be deactivated to go below Z_PROBE_OFFSET_FROM_EXTRUDER
   // when the hardware endstops are active.
-  //#define FIX_MOUNTED_PROBE
+  #define FIX_MOUNTED_PROBE
 
   // A Servo Probe can be defined in the servo section below.
 
   // For example any setup that uses the nozzle itself as a probe.
   //#define MECHANICAL_PROBE
 
+  // Allen key retractable z-probe as seen on many Kossel delta printers - http://reprap.org/wiki/Kossel#Automatic_bed_leveling_probe
+  // Deploys by touching z-axis belt. Retracts by pushing the probe down. Uses Z_MIN_PIN.
+  //#define Z_PROBE_ALLEN_KEY
+
+  #if ENABLED(Z_PROBE_ALLEN_KEY)
+    // 2 or 3 sets of coordinates for deploying and retracting the spring loaded touch probe on G29,
+    // if servo actuated touch probe is not defined. Uncomment as appropriate for your printer/probe.
+
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_X 30.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Y DELTA_PRINTABLE_RADIUS
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_X 0.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Y DELTA_PRINTABLE_RADIUS
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_FEEDRATE (HOMING_FEEDRATE_XYZ)/10
+
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_X -64.0 // Move the probe into position
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Y 56.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Z 23.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_X -64.0 // Push it down
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Y 56.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Z 3.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_FEEDRATE (HOMING_FEEDRATE_XYZ)/10
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_X -64.0 // Move it up to clear
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Y 56.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Z 50.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_FEEDRATE HOMING_FEEDRATE_XYZ
+
+    // Kossel Mini
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_X 35.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Y 72.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_FEEDRATE (HOMING_FEEDRATE_XYZ)/10
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_X 0.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Y 0.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_FEEDRATE (HOMING_FEEDRATE_XYZ)/10
+
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_X -46.0 // Move the probe into position
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Y 59.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Z 28.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_X -46.0 // Move the nozzle down further to push the probe into retracted position.
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Y 59.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Z 8.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_FEEDRATE (HOMING_FEEDRATE_XYZ)/10
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_X -46.0 // Raise things back up slightly so we don't bump into anything
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Y 59.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Z 38.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_FEEDRATE HOMING_FEEDRATE_XYZ
+
+    // Kossel Pro
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_X -105.00 // Move left but not quite so far that we'll bump the belt
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Y 0.00
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_1_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_X -110.00 // Move outward to position deploy pin to the left of the arm
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Y -125.00
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_2_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_3_X 45.00 // Move right to trigger deploy pin
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_3_Y -125.00
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_3_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_DEPLOY_3_FEEDRATE (HOMING_FEEDRATE_XYZ)/2
+
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_X 36.00 // Line up with bed retaining clip
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Y -122.00
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_Z 75.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_1_FEEDRATE HOMING_FEEDRATE_XYZ
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_X 36.00 // move down to retract probe
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Y -122.00
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_Z 25.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_2_FEEDRATE (HOMING_FEEDRATE_XYZ)/2
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_X 0.0  // return to 0,0,100
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Y 0.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_Z 100.0
+    //#define Z_PROBE_ALLEN_KEY_STOW_3_FEEDRATE HOMING_FEEDRATE_XYZ
+  #endif
+
   // If you've enabled AUTO_BED_LEVELING_FEATURE and are using the Z Probe for Z Homing,
   // it is highly recommended you leave Z_SAFE_HOMING enabled!
 
-  #define Z_SAFE_HOMING   // Use the z-min-probe for homing to z-min - not the z-min-endstop.
+  // #define Z_SAFE_HOMING   // Use the z-min-probe for homing to z-min - not the z-min-endstop.
                           // This feature is meant to avoid Z homing with Z probe outside the bed area.
                           // When defined, it will:
                           // - Allow Z homing only after X and Y homing AND stepper drivers still enabled.
 #if ENABLED(MANUAL_HOME_POSITIONS)
   #define MANUAL_X_HOME_POS 0
   #define MANUAL_Y_HOME_POS 0
-  #define MANUAL_Z_HOME_POS 386.5 // For delta: Distance between nozzle and print surface after homing.
+  #define MANUAL_Z_HOME_POS 381.4 // For delta: Distance between nozzle and print surface after homing.
 #endif
 
 // @section movement
  * MOVEMENT SETTINGS
  */
 
-#define HOMING_FEEDRATE {60*60, 60*60, 60*60, 0}  // set the homing speeds (mm/min)
+// delta homing speeds must be the same on xyz
+#define HOMING_FEEDRATE_XYZ (60*60)
+#define HOMING_FEEDRATE_E 0
+#define HOMING_FEEDRATE { HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_XYZ, HOMING_FEEDRATE_E }
 
-// default settings
+// variables to calculate steps
 #define XYZ_FULL_STEPS_PER_ROTATION 200
 #define XYZ_MICROSTEPS 16
 #define XYZ_BELT_PITCH 2
 #define XYZ_PULLEY_TEETH 16
-#define XYZ_STEPS ((XYZ_FULL_STEPS_PER_ROTATION) * (XYZ_MICROSTEPS) / double(XYZ_BELT_PITCH) / double(XYZ_PULLEY_TEETH))
+
+// delta speeds must be the same on xyz
+#define XYZ_STEPS (XYZ_FULL_STEPS_PER_ROTATION * XYZ_MICROSTEPS / double(XYZ_BELT_PITCH) / double(XYZ_PULLEY_TEETH))
 
 #define DEFAULT_AXIS_STEPS_PER_UNIT   {XYZ_STEPS, XYZ_STEPS, XYZ_STEPS, 158}   // default steps per unit for PowerWasp
-#define DEFAULT_MAX_FEEDRATE          {200, 200, 200, 200}    // (mm/sec)
-#define DEFAULT_MAX_ACCELERATION      {9000,9000,9000,9000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.
+#define DEFAULT_MAX_FEEDRATE          {200, 200, 200, 25}    // (mm/sec)
+#define DEFAULT_MAX_ACCELERATION      {9000,9000,9000,10000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
 
 #define DEFAULT_ACCELERATION          2000    // X, Y, Z and E acceleration in mm/s^2 for printing moves
 #define DEFAULT_RETRACT_ACCELERATION  3000    // E acceleration in mm/s^2 for retracts
 // Preheat Constants
 #define PLA_PREHEAT_HOTEND_TEMP 180
 #define PLA_PREHEAT_HPB_TEMP 70
-#define PLA_PREHEAT_FAN_SPEED 100   // Insert Value between 0 and 255
+#define PLA_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
 
 #define ABS_PREHEAT_HOTEND_TEMP 240
-#define ABS_PREHEAT_HPB_TEMP 110
-#define ABS_PREHEAT_FAN_SPEED 100   // Insert Value between 0 and 255
+#define ABS_PREHEAT_HPB_TEMP 100
+#define ABS_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
 
 //=============================================================================
 //============================= LCD and SD support ============================
   #define FILAMENT_SENSOR_EXTRUDER_NUM 0   //The number of the extruder that has the filament sensor (0,1,2)
   #define MEASUREMENT_DELAY_CM        14   //measurement delay in cm.  This is the distance from filament sensor to middle of barrel
 
-  #define MEASURED_UPPER_LIMIT         2.00  //upper limit factor used for sensor reading validation in mm
-  #define MEASURED_LOWER_LIMIT         1.60  //lower limit factor for sensor reading validation in mm
+  #define MEASURED_UPPER_LIMIT         3.30  //upper limit factor used for sensor reading validation in mm
+  #define MEASURED_LOWER_LIMIT         1.90  //lower limit factor for sensor reading validation in mm
   #define MAX_MEASUREMENT_DELAY       20     //delay buffer size in bytes (1 byte = 1cm)- limits maximum measurement delay allowable (must be larger than MEASUREMENT_DELAY_CM  and lower number saves RAM)
 
   #define DEFAULT_MEASURED_FILAMENT_DIA  DEFAULT_NOMINAL_FILAMENT_DIA  //set measured to nominal initially

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

  */
 #if ENABLED(THERMAL_PROTECTION_BED)
   #define THERMAL_PROTECTION_BED_PERIOD 20    // Seconds
-  #define THERMAL_PROTECTION_BED_HYSTERESIS 4 // Degrees Celsius
+  #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
 #endif
 
 #if ENABLED(PIDTEMP)
 // @section homing
 
 //homing hits the endstop, then retracts by this distance, before it tries to slowly bump again:
-#define X_HOME_BUMP_MM 5
-#define Y_HOME_BUMP_MM 5
-#define Z_HOME_BUMP_MM 2
+#define X_HOME_BUMP_MM 2
+#define Y_HOME_BUMP_MM 2
+#define Z_HOME_BUMP_MM 2 // deltas need the same for all three axis
 #define HOMING_BUMP_DIVISOR {2, 2, 4}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 // Default stepper release if idle. Set to 0 to deactivate.
 // Steppers will shut down DEFAULT_STEPPER_DEACTIVE_TIME seconds after the last move when DISABLE_INACTIVE_? is true.
 // Time can be set by M18 and M84.
-#define DEFAULT_STEPPER_DEACTIVE_TIME 60
+#define DEFAULT_STEPPER_DEACTIVE_TIME 120
 #define DISABLE_INACTIVE_X true
 #define DISABLE_INACTIVE_Y true
 #define DISABLE_INACTIVE_Z true  // set to false if the nozzle will fall down on your printed part when print has finished.
 // @section lcd
 
 #if ENABLED(ULTIPANEL)
-  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define MANUAL_FEEDRATE_XYZ 50*60
+  #define MANUAL_FEEDRATE { MANUAL_FEEDRATE_XYZ, MANUAL_FEEDRATE_XYZ, MANUAL_FEEDRATE_XYZ, 60 } // Feedrates for manual moves along X, Y, Z, E from panel
   #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 #define DEFAULT_MINSEGMENTTIME        20000
 
 // If defined the movements slow down when the look ahead buffer is only half full
-#define SLOWDOWN
+// (don't use SLOWDOWN with DELTA because DELTA generates hundreds of segments per second)
+//#define SLOWDOWN
 
 // Frequency limit
 // See nophead's blog for more info

Marlin/example_configurations/delta/kossel_xl/README.md

 # Configuration for Kossel k800 XL
-This example configuration ist for a Kossel XL with a printable bed diameter of 280mm and a height of 385mm. It also has the auto bed leveling probe (with a endstop switch) and the heat bed activated. 
+This example configuration is for a Kossel XL with a printable bed diameter of 280mm and a height of 380mm. It also has the auto bed leveling probe (with an endstop switch) and the heated bed activated.
 
 ## Configuration
-You might have/want to edit at least the following settings in Configuration.h:
-* <code>MANUAL_Z_HOME_POS<code> The hight of your printing space available, auto bed leveling makes this not as important as before
-* <code>DELTA_PRINTABLE_RADIUS</code> The printable radius
-* <code>DEFAULT_AXIS_STEPS_PER_UNIT</code> [http://zennmaster.com/makingstuff/reprap-101-calibrating-your-extruder-part-1-e-steps](The steps for the extruder to optimize the amount of filament flow)
+You might need (or want) to edit at least the following settings in `Configuration.h`:
+* `MANUAL_Z_HOME_POS` - The available height of your printing space. Auto Bed Leveling makes it less important to have the exact value.
+* `DELTA_PRINTABLE_RADIUS` - The printable radius is how far from the center the nozzle can reach.
+* `DEFAULT_AXIS_STEPS_PER_UNIT` - Steps-per-millimeter for the delta steppers, and for the extruder [to optimize the amount of filament flow](http://zennmaster.com/makingstuff/reprap-101-calibrating-your-extruder-part-1-e-steps).
 
 ### Fine tuning
-* Increase <code>DELTA_RADIUS</code> when the model is convex (bulge in the middle)
-* Increase <code>DELTA_DIAGONAL_ROD</code> when the model is larger then expected
+* Increase `DELTA_RADIUS` if the model comes out convex (with a bulge in the middle)
+* Increase `DELTA_DIAGONAL_ROD` if the model comes out larger than expected
 
 ### [http://reprap.org/wiki/PID_Tuning](PID Tuning)
-* <code>DEFAULT_Kp</code> (PID tuning for the hotend)
-* <code>DEFAULT_Ki</code> (PID tuning for the hotend)
-* <code>DEFAULT_Kd</code> (PID tuning for the hotend)
+* `DEFAULT_Kp` - The proportional term
+* `DEFAULT_Ki` - The integral term
+* `DEFAULT_Kd` - The derivative term
 
 ### PSU Options
 * The power supply is configured to 2 (to use a relay to switch 12V on and off)