Add a ported example configuration for the Velleman K8400 (Vertex) printer.

Supports both dual and single head printers (with the correct config).
Includes community sourced feed rate fix.

Rename / move files.

Remove redundant definitions.

Marlin/boards.h

@@ -60,7 +60,8 @@
 #define BOARD_ULTIMAKER_OLD     71   // Ultimaker (Older electronics. Pre 1.5.4. This is rare)
 #define BOARD_ULTIMAIN_2        72   // Ultimainboard 2.x (Uses TEMP_SENSOR 20)
 #define BOARD_3DRAG             77   // 3Drag Controller
-#define BOARD_K8200             78   // Vellemann K8200 Controller (derived from 3Drag Controller)
+#define BOARD_K8200             78   // Velleman K8200 Controller (derived from 3Drag Controller)
+#define BOARD_K8400             79   // Velleman K8400 Controller (derived from 3Drag Controller)
 #define BOARD_TEENSYLU          8    // Teensylu
 #define BOARD_RUMBA             80   // Rumba
 #define BOARD_PRINTRBOARD       81   // Printrboard (AT90USB1286)

Marlin/example_configurations/K8400/Configuration_adv.h

@@ -0,0 +1,750 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Configuration_adv.h
+ *
+ * Advanced settings.
+ * Only change these if you know exactly what you're doing.
+ * Some of these settings can damage your printer if improperly set!
+ *
+ * Basic settings can be found in Configuration.h
+ *
+ */
+#ifndef CONFIGURATION_ADV_H
+#define CONFIGURATION_ADV_H
+
+/**
+ *
+ *  ***********************************
+ *  **  ATTENTION TO ALL DEVELOPERS  **
+ *  ***********************************
+ *
+ * You must increment this version number for every significant change such as,
+ * but not limited to: ADD, DELETE RENAME OR REPURPOSE any directive/option.
+ *
+ * Note: Update also Version.h !
+ */
+#define CONFIGURATION_ADV_H_VERSION 010100
+
+#include "Conditionals.h"
+
+// @section temperature
+
+//===========================================================================
+//=============================Thermal Settings  ============================
+//===========================================================================
+
+#if DISABLED(PIDTEMPBED)
+  #define BED_CHECK_INTERVAL 1000 // ms between checks in bang-bang control
+  #if ENABLED(BED_LIMIT_SWITCHING)
+    #define BED_HYSTERESIS 1 // Only disable heating if T>target+BED_HYSTERESIS and enable heating if T>target-BED_HYSTERESIS
+  #endif
+#endif
+
+/**
+ * Thermal Protection protects your printer from damage and fire if a
+ * thermistor falls out or temperature sensors fail in any way.
+ *
+ * The issue: If a thermistor falls out or a temperature sensor fails,
+ * Marlin can no longer sense the actual temperature. Since a disconnected
+ * thermistor reads as a low temperature, the firmware will keep the heater on.
+ *
+ * The solution: Once the temperature reaches the target, start observing.
+ * If the temperature stays too far below the target (hysteresis) for too long (period),
+ * the firmware will halt the machine as a safety precaution.
+ *
+ * If you get false positives for "Thermal Runaway" increase THERMAL_PROTECTION_HYSTERESIS and/or THERMAL_PROTECTION_PERIOD
+ */
+#if ENABLED(THERMAL_PROTECTION_HOTENDS)
+  #define THERMAL_PROTECTION_PERIOD 40        // Seconds
+  #define THERMAL_PROTECTION_HYSTERESIS 4     // Degrees Celsius
+
+  /**
+   * Whenever an M104 or M109 increases the target temperature the firmware will wait for the
+   * WATCH_TEMP_PERIOD to expire, and if the temperature hasn't increased by WATCH_TEMP_INCREASE
+   * degrees, the machine is halted, requiring a hard reset. This test restarts with any M104/M109,
+   * but only if the current temperature is far enough below the target for a reliable test.
+   *
+   * If you get false positives for "Heating failed" increase WATCH_TEMP_PERIOD and/or decrease WATCH_TEMP_INCREASE
+   * WATCH_TEMP_INCREASE should not be below 2.
+   */
+  #define WATCH_TEMP_PERIOD 20                // Seconds
+  #define WATCH_TEMP_INCREASE 2               // Degrees Celsius
+#endif
+
+/**
+ * Thermal Protection parameters for the bed are just as above for hotends.
+ */
+#if ENABLED(THERMAL_PROTECTION_BED)
+  #define THERMAL_PROTECTION_BED_PERIOD 20    // Seconds
+  #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
+
+  /**
+   * Whenever an M140 or M190 increases the target temperature the firmware will wait for the
+   * WATCH_BED_TEMP_PERIOD to expire, and if the temperature hasn't increased by WATCH_BED_TEMP_INCREASE
+   * degrees, the machine is halted, requiring a hard reset. This test restarts with any M140/M190,
+   * but only if the current temperature is far enough below the target for a reliable test.
+   *
+   * If you get too many "Heating failed" errors, increase WATCH_BED_TEMP_PERIOD and/or decrease
+   * WATCH_BED_TEMP_INCREASE. (WATCH_BED_TEMP_INCREASE should not be below 2.)
+   */
+  #define WATCH_BED_TEMP_PERIOD 60                // Seconds
+  #define WATCH_BED_TEMP_INCREASE 2               // Degrees Celsius
+#endif
+
+#if ENABLED(PIDTEMP)
+  // this adds an experimental additional term to the heating power, proportional to the extrusion speed.
+  // if Kc is chosen well, the additional required power due to increased melting should be compensated.
+  #define PID_ADD_EXTRUSION_RATE
+  #if ENABLED(PID_ADD_EXTRUSION_RATE)
+    #define DEFAULT_Kc (100) //heating power=Kc*(e_speed)
+    #define LPQ_MAX_LEN 50
+  #endif
+#endif
+
+/**
+ * Automatic Temperature:
+ * The hotend target temperature is calculated by all the buffered lines of gcode.
+ * The maximum buffered steps/sec of the extruder motor is called "se".
+ * Start autotemp mode with M109 S<mintemp> B<maxtemp> F<factor>
+ * The target temperature is set to mintemp+factor*se[steps/sec] and is limited by
+ * mintemp and maxtemp. Turn this off by executing M109 without F*
+ * Also, if the temperature is set to a value below mintemp, it will not be changed by autotemp.
+ * On an Ultimaker, some initial testing worked with M109 S215 B260 F1 in the start.gcode
+ */
+#define AUTOTEMP
+#if ENABLED(AUTOTEMP)
+  #define AUTOTEMP_OLDWEIGHT 0.98
+#endif
+
+//Show Temperature ADC value
+//The M105 command return, besides traditional information, the ADC value read from temperature sensors.
+//#define SHOW_TEMP_ADC_VALUES
+
+// @section extruder
+
+//  extruder run-out prevention.
+//if the machine is idle, and the temperature over MINTEMP, every couple of SECONDS some filament is extruded
+//#define EXTRUDER_RUNOUT_PREVENT
+#define EXTRUDER_RUNOUT_MINTEMP 190
+#define EXTRUDER_RUNOUT_SECONDS 30
+#define EXTRUDER_RUNOUT_ESTEPS 14   // mm filament
+#define EXTRUDER_RUNOUT_SPEED 1500  // extrusion speed
+#define EXTRUDER_RUNOUT_EXTRUDE 100
+
+// @section temperature
+
+//These defines help to calibrate the AD595 sensor in case you get wrong temperature measurements.
+//The measured temperature is defined as "actualTemp = (measuredTemp * TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET"
+#define TEMP_SENSOR_AD595_OFFSET 0.0
+#define TEMP_SENSOR_AD595_GAIN   1.0
+
+//This is for controlling a fan to cool down the stepper drivers
+//it will turn on when any driver is enabled
+//and turn off after the set amount of seconds from last driver being disabled again
+#define CONTROLLERFAN_PIN 2 //Pin used for the fan to cool controller (-1 to disable)
+#define CONTROLLERFAN_SECS 60 //How many seconds, after all motors were disabled, the fan should run
+#define CONTROLLERFAN_SPEED 255  // == full speed
+
+// When first starting the main fan, run it at full speed for the
+// given number of milliseconds.  This gets the fan spinning reliably
+// before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
+//#define FAN_KICKSTART_TIME 100
+
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
+// @section extruder
+
+// Extruder cooling fans
+// Configure fan pin outputs to automatically turn on/off when the associated
+// extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE.
+// Multiple extruders can be assigned to the same pin in which case
+// the fan will turn on when any selected extruder is above the threshold.
+#define EXTRUDER_0_AUTO_FAN_PIN -1
+#define EXTRUDER_1_AUTO_FAN_PIN -1
+#define EXTRUDER_2_AUTO_FAN_PIN -1
+#define EXTRUDER_3_AUTO_FAN_PIN -1
+#define EXTRUDER_AUTO_FAN_TEMPERATURE 50
+#define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
+
+
+//===========================================================================
+//=============================Mechanical Settings===========================
+//===========================================================================
+
+// @section homing
+
+#define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
+
+// @section extras
+
+//#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
+
+// A single Z stepper driver is usually used to drive 2 stepper motors.
+// Uncomment this define to utilize a separate stepper driver for each Z axis motor.
+// Only a few motherboards support this, like RAMPS, which have dual extruder support (the 2nd, often unused, extruder driver is used
+// to control the 2nd Z axis stepper motor). The pins are currently only defined for a RAMPS motherboards.
+// On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
+//#define Z_DUAL_STEPPER_DRIVERS
+
+#if ENABLED(Z_DUAL_STEPPER_DRIVERS)
+
+  // Z_DUAL_ENDSTOPS is a feature to enable the use of 2 endstops for both Z steppers - Let's call them Z stepper and Z2 stepper.
+  // That way the machine is capable to align the bed during home, since both Z steppers are homed.
+  // There is also an implementation of M666 (software endstops adjustment) to this feature.
+  // After Z homing, this adjustment is applied to just one of the steppers in order to align the bed.
+  // One just need to home the Z axis and measure the distance difference between both Z axis and apply the math: Z adjust = Z - Z2.
+  // If the Z stepper axis is closer to the bed, the measure Z > Z2 (yes, it is.. think about it) and the Z adjust would be positive.
+  // Play a little bit with small adjustments (0.5mm) and check the behaviour.
+  // The M119 (endstops report) will start reporting the Z2 Endstop as well.
+
+  //#define Z_DUAL_ENDSTOPS
+
+  #if ENABLED(Z_DUAL_ENDSTOPS)
+    #define Z2_USE_ENDSTOP _XMAX_
+  #endif
+
+#endif // Z_DUAL_STEPPER_DRIVERS
+
+// Same again but for Y Axis.
+//#define Y_DUAL_STEPPER_DRIVERS
+
+#if ENABLED(Y_DUAL_STEPPER_DRIVERS)
+  // Define if the two Y drives need to rotate in opposite directions
+  #define INVERT_Y2_VS_Y_DIR true
+#endif
+
+// Enable this for dual x-carriage printers.
+// A dual x-carriage design has the advantage that the inactive extruder can be parked which
+// prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
+// allowing faster printing speeds. Connect your X2 stepper to the first unused E plug.
+//#define DUAL_X_CARRIAGE
+#if ENABLED(DUAL_X_CARRIAGE)
+  // Configuration for second X-carriage
+  // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
+  // the second x-carriage always homes to the maximum endstop.
+  #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
+  #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
+  #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position
+  #define X2_HOME_POS X2_MAX_POS // default home position is the maximum carriage position
+      // However: In this mode the HOTEND_OFFSET_X value for the second extruder provides a software
+      // override for X2_HOME_POS. This also allow recalibration of the distance between the two endstops
+      // without modifying the firmware (through the "M218 T1 X???" command).
+      // Remember: you should set the second extruder x-offset to 0 in your slicer.
+
+  // There are a few selectable movement modes for dual x-carriages using M605 S<mode>
+  //    Mode 0: Full control. The slicer has full control over both x-carriages and can achieve optimal travel results
+  //                           as long as it supports dual x-carriages. (M605 S0)
+  //    Mode 1: Auto-park mode. The firmware will automatically park and unpark the x-carriages on tool changes so
+  //                           that additional slicer support is not required. (M605 S1)
+  //    Mode 2: Duplication mode. The firmware will transparently make the second x-carriage and extruder copy all
+  //                           actions of the first x-carriage. This allows the printer to print 2 arbitrary items at
+  //                           once. (2nd extruder x offset and temp offset are set using: M605 S2 [Xnnn] [Rmmm])
+
+  // This is the default power-up mode which can be later using M605.
+  #define DEFAULT_DUAL_X_CARRIAGE_MODE 0
+
+  // Default settings in "Auto-park Mode"
+  #define TOOLCHANGE_PARK_ZLIFT   0.2      // the distance to raise Z axis when parking an extruder
+  #define TOOLCHANGE_UNPARK_ZLIFT 1        // the distance to raise Z axis when unparking an extruder
+
+  // Default x offset in duplication mode (typically set to half print bed width)
+  #define DEFAULT_DUPLICATION_X_OFFSET 100
+
+#endif //DUAL_X_CARRIAGE
+
+// @section homing
+
+//homing hits the endstop, then retracts by this distance, before it tries to slowly bump again:
+#define X_HOME_BUMP_MM 10
+#define Y_HOME_BUMP_MM 10
+#define Z_HOME_BUMP_MM 3
+#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.
+
+// When G28 is called, this option will make Y home before X
+//#define HOME_Y_BEFORE_X
+
+// @section machine
+
+#define AXIS_RELATIVE_MODES {false, false, false, false}
+
+//By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
+#define INVERT_X_STEP_PIN false
+#define INVERT_Y_STEP_PIN false
+#define INVERT_Z_STEP_PIN false
+#define INVERT_E_STEP_PIN false
+
+// 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 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.
+#define DISABLE_INACTIVE_E true
+
+#define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
+#define DEFAULT_MINTRAVELFEEDRATE     0.0
+
+// @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 ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
+#endif
+
+// @section extras
+
+// minimum time in microseconds that a movement needs to take if the buffer is emptied.
+#define DEFAULT_MINSEGMENTTIME        20000
+
+// If defined the movements slow down when the look ahead buffer is only half full
+#define SLOWDOWN
+
+// Frequency limit
+// See nophead's blog for more info
+// Not working O
+//#define XY_FREQUENCY_LIMIT  15
+
+// Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end
+// of the buffer and all stops. This should not be much greater than zero and should only be changed
+// if unwanted behavior is observed on a user's machine when running at very slow speeds.
+#define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
+
+// Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
+#define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
+
+// Motor Current setting (Only functional when motor driver current ref pins are connected to a digital trimpot on supported boards)
+#define DIGIPOT_MOTOR_CURRENT {135,135,135,135,135} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)
+
+// Motor Current controlled via PWM (Overridable on supported boards with PWM-driven motor driver current)
+//#define PWM_MOTOR_CURRENT {1300, 1300, 1250} // Values in milliamps
+
+// uncomment to enable an I2C based DIGIPOT like on the Azteeg X3 Pro
+//#define DIGIPOT_I2C
+// Number of channels available for I2C digipot, For Azteeg X3 Pro we have 8
+#define DIGIPOT_I2C_NUM_CHANNELS 8
+// actual motor currents in Amps, need as many here as DIGIPOT_I2C_NUM_CHANNELS
+#define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}
+
+//===========================================================================
+//=============================Additional Features===========================
+//===========================================================================
+
+#define ENCODER_RATE_MULTIPLIER         // If defined, certain menu edit operations automatically multiply the steps when the encoder is moved quickly
+#define ENCODER_10X_STEPS_PER_SEC 75    // If the encoder steps per sec exceeds this value, multiply steps moved x10 to quickly advance the value
+#define ENCODER_100X_STEPS_PER_SEC 160  // If the encoder steps per sec exceeds this value, multiply steps moved x100 to really quickly advance the value
+
+//#define CHDK 4        //Pin for triggering CHDK to take a picture see how to use it here http://captain-slow.dk/2014/03/09/3d-printing-timelapses/
+#define CHDK_DELAY 50 //How long in ms the pin should stay HIGH before going LOW again
+
+// @section lcd
+
+// Include a page of printer information in the LCD Main Menu
+//#define LCD_INFO_MENU
+
+#if ENABLED(SDSUPPORT)
+
+  // Some RAMPS and other boards don't detect when an SD card is inserted. You can work
+  // around this by connecting a push button or single throw switch to the pin defined
+  // as SD_DETECT_PIN in your board's pins definitions.
+  // This setting should be disabled unless you are using a push button, pulling the pin to ground.
+  // Note: This is always disabled for ULTIPANEL (except ELB_FULL_GRAPHIC_CONTROLLER).
+  #define SD_DETECT_INVERTED
+
+  #define SD_FINISHED_STEPPERRELEASE true  //if sd support and the file is finished: disable steppers?
+  #define SD_FINISHED_RELEASECOMMAND "M84 X Y Z E" // You might want to keep the z enabled so your bed stays in place.
+
+  #define SDCARD_RATHERRECENTFIRST  //reverse file order of sd card menu display. Its sorted practically after the file system block order.
+  // if a file is deleted, it frees a block. hence, the order is not purely chronological. To still have auto0.g accessible, there is again the option to do that.
+  // using:
+  //#define MENU_ADDAUTOSTART
+
+  // Show a progress bar on HD44780 LCDs for SD printing
+  //#define LCD_PROGRESS_BAR
+
+  #if ENABLED(LCD_PROGRESS_BAR)
+    // Amount of time (ms) to show the bar
+    #define PROGRESS_BAR_BAR_TIME 2000
+    // Amount of time (ms) to show the status message
+    #define PROGRESS_BAR_MSG_TIME 3000
+    // Amount of time (ms) to retain the status message (0=forever)
+    #define PROGRESS_MSG_EXPIRE   0
+    // Enable this to show messages for MSG_TIME then hide them
+    //#define PROGRESS_MSG_ONCE
+  #endif
+
+  // This allows hosts to request long names for files and folders with M33
+  //#define LONG_FILENAME_HOST_SUPPORT
+
+  // This option allows you to abort SD printing when any endstop is triggered.
+  // This feature must be enabled with "M540 S1" or from the LCD menu.
+  // To have any effect, endstops must be enabled during SD printing.
+  // With ENDSTOPS_ONLY_FOR_HOMING you must send "M120" to enable endstops.
+  //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
+
+#endif // SDSUPPORT
+
+// for dogm lcd displays you can choose some additional fonts:
+#if ENABLED(DOGLCD)
+  // save 3120 bytes of PROGMEM by commenting out #define USE_BIG_EDIT_FONT
+  // we don't have a big font for Cyrillic, Kana
+  //#define USE_BIG_EDIT_FONT
+
+  // If you have spare 2300Byte of progmem and want to use a
+  // smaller font on the Info-screen uncomment the next line.
+  //#define USE_SMALL_INFOFONT
+#endif // DOGLCD
+
+// @section safety
+
+// The hardware watchdog should reset the microcontroller disabling all outputs,
+// in case the firmware gets stuck and doesn't do temperature regulation.
+#define USE_WATCHDOG
+
+#if ENABLED(USE_WATCHDOG)
+  // If you have a watchdog reboot in an ArduinoMega2560 then the device will hang forever, as a watchdog reset will leave the watchdog on.
+  // The "WATCHDOG_RESET_MANUAL" goes around this by not using the hardware reset.
+  //  However, THIS FEATURE IS UNSAFE!, as it will only work if interrupts are disabled. And the code could hang in an interrupt routine with interrupts disabled.
+  //#define WATCHDOG_RESET_MANUAL
+#endif
+
+// @section lcd
+
+// Babystepping enables the user to control the axis in tiny amounts, independently from the normal printing process
+// it can e.g. be used to change z-positions in the print startup phase in real-time
+// does not respect endstops!
+//#define BABYSTEPPING
+#if ENABLED(BABYSTEPPING)
+  #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
+                       //not implemented for deltabots!
+  #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
+  #define BABYSTEP_MULTIPLICATOR 1 //faster movements
+#endif
+
+// @section extruder
+
+// extruder advance constant (s2/mm3)
+//
+// advance (steps) = STEPS_PER_CUBIC_MM_E * EXTRUDER_ADVANCE_K * cubic mm per second ^ 2
+//
+// Hooke's law says:    force = k * distance
+// Bernoulli's principle says:  v ^ 2 / 2 + g . h + pressure / density = constant
+// so: v ^ 2 is proportional to number of steps we advance the extruder
+//#define ADVANCE
+
+#if ENABLED(ADVANCE)
+  #define EXTRUDER_ADVANCE_K .0
+  #define D_FILAMENT 2.85
+#endif
+
+// Implementation of a linear pressure control
+// Assumption: advance = k * (delta velocity)
+// K=0 means advance disabled. A good value for a gregs wade extruder will be around K=75
+//#define LIN_ADVANCE
+
+#if ENABLED(LIN_ADVANCE)
+  #define LIN_ADVANCE_K 75
+#endif
+
+// @section leveling
+
+// Default mesh area is an area with an inset margin on the print area.
+// Below are the macros that are used to define the borders for the mesh area,
+// made available here for specialized needs, ie dual extruder setup.
+#if ENABLED(MESH_BED_LEVELING)
+  #define MESH_MIN_X (X_MIN_POS + MESH_INSET)
+  #define MESH_MAX_X (X_MAX_POS - (MESH_INSET))
+  #define MESH_MIN_Y (Y_MIN_POS + MESH_INSET)
+  #define MESH_MAX_Y (Y_MAX_POS - (MESH_INSET))
+#endif
+
+// @section extras
+
+// Arc interpretation settings:
+#define ARC_SUPPORT  // Disabling this saves ~2738 bytes
+#define MM_PER_ARC_SEGMENT 1
+#define N_ARC_CORRECTION 25
+
+// Support for G5 with XYZE destination and IJPQ offsets. Requires ~2666 bytes.
+//#define BEZIER_CURVE_SUPPORT
+
+const unsigned int dropsegments = 5; //everything with less than this number of steps will be ignored as move and joined with the next movement
+
+// @section temperature
+
+// Control heater 0 and heater 1 in parallel.
+//#define HEATERS_PARALLEL
+
+//===========================================================================
+//================================= Buffers =================================
+//===========================================================================
+
+// @section hidden
+
+// The number of linear motions that can be in the plan at any give time.
+// THE BLOCK_BUFFER_SIZE NEEDS TO BE A POWER OF 2, i.g. 8,16,32 because shifts and ors are used to do the ring-buffering.
+#if ENABLED(SDSUPPORT)
+  #define BLOCK_BUFFER_SIZE 16   // SD,LCD,Buttons take more memory, block buffer needs to be smaller
+#else
+  #define BLOCK_BUFFER_SIZE 16 // maximize block buffer
+#endif
+
+// @section serial
+
+// The ASCII buffer for serial input
+#define MAX_CMD_SIZE 96
+#define BUFSIZE 26
+
+// Bad Serial-connections can miss a received command by sending an 'ok'
+// Therefore some clients abort after 30 seconds in a timeout.
+// Some other clients start sending commands while receiving a 'wait'.
+// This "wait" is only sent when the buffer is empty. 1 second is a good value here.
+//#define NO_TIMEOUTS 1000 // Milliseconds
+
+// Some clients will have this feature soon. This could make the NO_TIMEOUTS unnecessary.
+//#define ADVANCED_OK
+
+// @section fwretract
+
+// Firmware based and LCD controlled retract
+// M207 and M208 can be used to define parameters for the retraction.
+// The retraction can be called by the slicer using G10 and G11
+// until then, intended retractions can be detected by moves that only extrude and the direction.
+// the moves are than replaced by the firmware controlled ones.
+
+//#define FWRETRACT  //ONLY PARTIALLY TESTED
+#if ENABLED(FWRETRACT)
+  #define MIN_RETRACT 0.1                //minimum extruded mm to accept a automatic gcode retraction attempt
+  #define RETRACT_LENGTH 3               //default retract length (positive mm)
+  #define RETRACT_LENGTH_SWAP 13         //default swap retract length (positive mm), for extruder change
+  #define RETRACT_FEEDRATE 45            //default feedrate for retracting (mm/s)
+  #define RETRACT_ZLIFT 0                //default retract Z-lift
+  #define RETRACT_RECOVER_LENGTH 0       //default additional recover length (mm, added to retract length when recovering)
+  #define RETRACT_RECOVER_LENGTH_SWAP 0  //default additional swap recover length (mm, added to retract length when recovering from extruder change)
+  #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
+#endif
+
+// Add support for experimental filament exchange support M600; requires display
+#if ENABLED(ULTIPANEL)
+  #define FILAMENT_CHANGE_FEATURE               // Enable filament exchange menu and M600 g-code (used for runout sensor too)
+  #if ENABLED(FILAMENT_CHANGE_FEATURE)
+    #define FILAMENT_CHANGE_X_POS 100           // X position of hotend
+    #define FILAMENT_CHANGE_Y_POS 100           // Y position of hotend
+    #define FILAMENT_CHANGE_Z_ADD 20            // Z addition of hotend (lift)
+    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+    #define FILAMENT_CHANGE_RETRACT_LENGTH 5    // Initial retract in mm
+                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
+    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+    #define FILAMENT_CHANGE_UNLOAD_LENGTH 600   // Unload filament length from hotend in mm
+                                                // Longer length for bowden printers to unload filament from whole bowden tube,
+                                                // shorter lenght for printers without bowden to unload filament from extruder only,
+                                                // 0 to disable unloading for manual unloading
+    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+    #define FILAMENT_CHANGE_LOAD_LENGTH 600     // Load filament length over hotend in mm
+                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                                // Short or zero length for printers without bowden where loading is not used
+    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 100  // Extrude filament length in mm after filament is load over the hotend,
+                                                // 0 to disable for manual extrusion
+                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                                // or until outcoming filament color is not clear for filament color change
+    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
+  #endif
+#endif
+
+/******************************************************************************\
+ * enable this section if you have TMC26X motor drivers.
+ * you need to import the TMC26XStepper library into the Arduino IDE for this
+ ******************************************************************************/
+
+// @section tmc
+
+//#define HAVE_TMCDRIVER
+#if ENABLED(HAVE_TMCDRIVER)
+
+  //#define X_IS_TMC
+  #define X_MAX_CURRENT 1000  //in mA
+  #define X_SENSE_RESISTOR 91 //in mOhms
+  #define X_MICROSTEPS 16     //number of microsteps
+
+  //#define X2_IS_TMC
+  #define X2_MAX_CURRENT 1000  //in mA
+  #define X2_SENSE_RESISTOR 91 //in mOhms
+  #define X2_MICROSTEPS 16     //number of microsteps
+
+  //#define Y_IS_TMC
+  #define Y_MAX_CURRENT 1000  //in mA
+  #define Y_SENSE_RESISTOR 91 //in mOhms
+  #define Y_MICROSTEPS 16     //number of microsteps
+
+  //#define Y2_IS_TMC
+  #define Y2_MAX_CURRENT 1000  //in mA
+  #define Y2_SENSE_RESISTOR 91 //in mOhms
+  #define Y2_MICROSTEPS 16     //number of microsteps
+
+  //#define Z_IS_TMC
+  #define Z_MAX_CURRENT 1000  //in mA
+  #define Z_SENSE_RESISTOR 91 //in mOhms
+  #define Z_MICROSTEPS 16     //number of microsteps
+
+  //#define Z2_IS_TMC
+  #define Z2_MAX_CURRENT 1000  //in mA
+  #define Z2_SENSE_RESISTOR 91 //in mOhms
+  #define Z2_MICROSTEPS 16     //number of microsteps
+
+  //#define E0_IS_TMC
+  #define E0_MAX_CURRENT 1000  //in mA
+  #define E0_SENSE_RESISTOR 91 //in mOhms
+  #define E0_MICROSTEPS 16     //number of microsteps
+
+  //#define E1_IS_TMC
+  #define E1_MAX_CURRENT 1000  //in mA
+  #define E1_SENSE_RESISTOR 91 //in mOhms
+  #define E1_MICROSTEPS 16     //number of microsteps
+
+  //#define E2_IS_TMC
+  #define E2_MAX_CURRENT 1000  //in mA
+  #define E2_SENSE_RESISTOR 91 //in mOhms
+  #define E2_MICROSTEPS 16     //number of microsteps
+
+  //#define E3_IS_TMC
+  #define E3_MAX_CURRENT 1000  //in mA
+  #define E3_SENSE_RESISTOR 91 //in mOhms
+  #define E3_MICROSTEPS 16     //number of microsteps
+
+#endif
+
+/******************************************************************************\
+ * enable this section if you have L6470  motor drivers.
+ * you need to import the L6470 library into the Arduino IDE for this
+ ******************************************************************************/
+
+// @section l6470
+
+//#define HAVE_L6470DRIVER
+#if ENABLED(HAVE_L6470DRIVER)
+
+  //#define X_IS_L6470
+  #define X_MICROSTEPS 16     //number of microsteps
+  #define X_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define X_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define X_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define X2_IS_L6470
+  #define X2_MICROSTEPS 16     //number of microsteps
+  #define X2_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define X2_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define X2_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define Y_IS_L6470
+  #define Y_MICROSTEPS 16     //number of microsteps
+  #define Y_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define Y_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define Y_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define Y2_IS_L6470
+  #define Y2_MICROSTEPS 16     //number of microsteps
+  #define Y2_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define Y2_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define Y2_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define Z_IS_L6470
+  #define Z_MICROSTEPS 16     //number of microsteps
+  #define Z_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define Z_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define Z_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define Z2_IS_L6470
+  #define Z2_MICROSTEPS 16     //number of microsteps
+  #define Z2_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define Z2_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define Z2_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define E0_IS_L6470
+  #define E0_MICROSTEPS 16     //number of microsteps
+  #define E0_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define E0_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define E0_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define E1_IS_L6470
+  #define E1_MICROSTEPS 16     //number of microsteps
+  #define E1_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define E1_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define E1_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define E2_IS_L6470
+  #define E2_MICROSTEPS 16     //number of microsteps
+  #define E2_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define E2_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define E2_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+  //#define E3_IS_L6470
+  #define E3_MICROSTEPS 16     //number of microsteps
+  #define E3_K_VAL 50          // 0 - 255, Higher values, are higher power. Be careful not to go too high
+  #define E3_OVERCURRENT 2000  //maxc current in mA. If the current goes over this value, the driver will switch off
+  #define E3_STALLCURRENT 1500 //current in mA where the driver will detect a stall
+
+#endif
+
+/**
+ * TWI/I2C BUS
+ *
+ * This feature is an EXPERIMENTAL feature so it shall not be used on production
+ * machines. Enabling this will allow you to send and receive I2C data from slave
+ * devices on the bus.
+ *
+ * ; Example #1
+ * ; This macro send the string "Marlin" to the slave device with address 0x63 (99)
+ * ; It uses multiple M155 commands with one B<base 10> arg
+ * M155 A99  ; Target slave address
+ * M155 B77  ; M
+ * M155 B97  ; a
+ * M155 B114 ; r
+ * M155 B108 ; l
+ * M155 B105 ; i
+ * M155 B110 ; n
+ * M155 S1   ; Send the current buffer
+ *
+ * ; Example #2
+ * ; Request 6 bytes from slave device with address 0x63 (99)
+ * M156 A99 B5
+ *
+ * ; Example #3
+ * ; Example serial output of a M156 request
+ * echo:i2c-reply: from:99 bytes:5 data:hello
+ */
+
+// @section i2cbus
+
+//#define EXPERIMENTAL_I2CBUS
+
+#include "Conditionals.h"
+#include "SanityCheck.h"
+
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/K8400/README.md

@@ -0,0 +1,15 @@
+# Configuration for Velleman K8400 Vertex
+http://www.k8400.eu/
+
+Configuration files for the K8400, ported upstream from the official Velleman firmware.
+Like it's predecessor, (K8200), the K8400 is a 3Drag clone. There are some minor differences, documented in pins_K8400.h.
+
+Single and dual head configurations provided. Copy the correct Configuration.h and Configuration_adv.h to the /Marlin/ directory.
+
+**NOTE: This configuration includes the community sourced feed rate fix. Use 100% feed rate in Repetier!**
+
+For implementation and updated K8400 firmware, see https://github.com/birkett/Velleman-K8400-Firmware
+
+### Original Sources
+Credit to Velleman for the original 1.0.x based code:<br />
+http://www.vertex3dprinter.eu/downloads/files/vertex/firmware/vertex-m1-v1.4-h2.zip

Marlin/pins.h

@@ -77,6 +77,8 @@
   #include "pins_3DRAG.h"
 #elif MB(K8200)
   #include "pins_K8200.h"
+#elif MB(K8400)
+  #include "pins_K8400.h"
 #elif MB(TEENSYLU)
   #include "pins_TEENSYLU.h"
 #elif MB(RUMBA)

Marlin/pins_3DRAG.h

@@ -21,7 +21,7 @@
  */
 
 /**
- * 3DRAG (and K8200) Arduino Mega with RAMPS v1.4 pin assignments
+ * 3DRAG (and K8200 / K8400) Arduino Mega with RAMPS v1.4 pin assignments
  */
 
 #ifndef BOARD_NAME

Marlin/pins_K8400.h

@@ -0,0 +1,52 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Velleman K8400 (Vertex)
+ * 3DRAG clone
+ *
+ * K8400 has some minor differences over a normal 3Drag:
+ *  - No X/Y max endstops
+ *  - Second extruder step pin has moved
+ *  - No power supply control
+ *  - Second heater has moved pin
+ */
+
+#define BOARD_NAME              "K8400"
+#define DEFAULT_MACHINE_NAME    "Vertex"
+#define DEFAULT_SOURCE_CODE_URL "https://github.com/birkett/Vertex-K8400-Firmware"
+
+#include "pins_3DRAG.h"
+
+#undef  X_MAX_PIN
+#define X_MAX_PIN     -1
+#undef  Y_MAX_PIN
+#define Y_MAX_PIN     -1
+
+#undef E1_STEP_PIN
+#define E1_STEP_PIN   32
+
+#undef PS_ON_PIN
+#undef KILL_PIN
+
+#undef HEATER_1_PIN
+#define HEATER_1_PIN  11

Marlin/ultralcd_st7920_u8glib_rrd.h

@@ -59,7 +59,7 @@
   #define CPU_ST7920_DELAY_1 DELAY_0_NOP
   #define CPU_ST7920_DELAY_2 DELAY_0_NOP
   #define CPU_ST7920_DELAY_3 DELAY_1_NOP
-#elif (MOTHERBOARD == BOARD_3DRAG) || (MOTHERBOARD == BOARD_K8200)
+#elif (MOTHERBOARD == BOARD_3DRAG) || (MOTHERBOARD == BOARD_K8200) || (MOTHERBOARD == BOARD_K8400)
   #define CPU_ST7920_DELAY_1 DELAY_0_NOP
   #define CPU_ST7920_DELAY_2 DELAY_3_NOP
   #define CPU_ST7920_DELAY_3 DELAY_0_NOP