My current setup:

RUMBA electronics, powering:
Two extruders, both hot ends controlled via auto-tuned PID loop
Heated build platform

I'm trying to add an enclosure heater and control the enclosure temperature with the RUMBA instead of a secondary thermostat/controller. The heater's power source will be 120 V AC from the wall, switched by a relay. I intend to control the temperature by treating the heater as a third hot end.

I've already installed a thermistor dangling inside the enclosure and hooked it to the third extruder temperature input of the RUMBA, and have successfully configured my host software (Octoprint) to pretend that it has a third extruder. I hooked a fan to the power output MOSFET for the third extruder hot end and was able to confirm that it receives 12 V when the third hot end is commanded on, and turns off when the temperature is set to zero. Great.

The main complicating factor here is that Marlin uses the same PWM control for all extruders. There's no built-in way to have some extruder hot ends run in regular PWM mode and others in slow PWM mode, or some in regular PWM and others bang-bang. When my enclosure temperature is well below the set point, this isn't an issue, but once it gets close to it, the control is going to start firing rapid on-off signals to the relay, which is no good. I don't want the relay cycling more than once every three seconds or so.

I do not fully understand the guts of temperature.cpp and associated pieces of Marlin. I have close to zero C++ experience, but have worked with C, Java, and several other similar languages enough to not be totally hopeless. I am looking for the quickest and safest way to hack Marlin to achieve a slower control of "extruder #3" so that my relay isn't flickering on and off like crazy.

This is what I'm currently looking at trying, based on studying the latest Marlin source code for a few hours:

Towards the end of temperature.cpp, there is the Timer 0 loop. About 54 lines down from the ISR(TIMER0_COMPB_vect) line, I find what appears to be the very place where Marlin is commanding the output of the heater pin for extruder #3:

WRITE_HEATER_2(soft_pwm_2 > 0 ? 1 : 0);

Perfect. My idea here is to implement a special counter RA_counter which only increments when ((pwm_count % 64) == 0), aka every 65 ms, similar to the slow PWM loop slow_pwm_count. I reset RA_counter to zero after it reaches 46. Then I add an if statement that prevents the above WRITE_HEATER_2 command from executing unless RA_counter == 46. The result should be that Marlin only attempts to make an adjustment to the voltage of extruder #3's heater pin every 46*0.065=3 seconds.

I don't have the relay yet, so I can't test this yet. It arrives Friday, and I plan to play with this over the weekend. I welcome feedback before I proceed to destroy my electronics, printer, burn down my house, and trigger the next great extinction of life on Earth by following the approach I've described above.

Hy everybody... I bought a proximity sensor and he is working but the old endstops was mechanical (and x and y is still mechanical just changed Z )

Anyone can please tell me why in the hell isn't the grid working in auto-home?

The files are attached to topic

#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
#define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.

#ifdef ENABLE_AUTO_BED_LEVELING

// There are 2 different ways to pick the X and Y locations to probe:

//  - "grid" mode
//    Probe every point in a rectangular grid
//    You must specify the rectangle, and the density of sample points
//    This mode is preferred because there are more measurements.
//    It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive

//  - "3-point" mode
//    Probe 3 arbitrary points on the bed (that aren't colinear)
//    You must specify the X & Y coordinates of all 3 points

  #define AUTO_BED_LEVELING_GRID
  // with AUTO_BED_LEVELING_GRID, the bed is sampled in a
  // AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
  // and least squares solution is calculated
  // Note: this feature occupies 10'206 byte
  #ifdef AUTO_BED_LEVELING_GRID

    // set the rectangle in which to probe
    #define LEFT_PROBE_BED_POSITION 0
    #define RIGHT_PROBE_BED_POSITION 200
    #define BACK_PROBE_BED_POSITION 200
    #define FRONT_PROBE_BED_POSITION 0

     // set the number of grid points per dimension
     // I wouldn't see a reason to go above 3 (=9 probing points on the bed)
    #define AUTO_BED_LEVELING_GRID_POINTS 3


 // #else  // not AUTO_BED_LEVELING_GRID
    // with no grid, just probe 3 arbitrary points.  A simple cross-product
    // is used to esimate the plane of the print bed

 //    #define ABL_PROBE_PT_1_X 24
  //    #define ABL_PROBE_PT_1_Y 164
   //   #define ABL_PROBE_PT_2_X 24
    //  #define ABL_PROBE_PT_2_Y 24
     // #define ABL_PROBE_PT_3_X 164
      //#define ABL_PROBE_PT_3_Y 24 

  #endif // AUTO_BED_LEVELING_GRID


  // these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
  // X and Y offsets must be integers
  #define X_PROBE_OFFSET_FROM_EXTRUDER 0
  #define Y_PROBE_OFFSET_FROM_EXTRUDER 0
  #define Z_PROBE_OFFSET_FROM_EXTRUDER 0

 #define Z_RAISE_BEFORE_HOMING 10       // (in mm) Raise Z before homing (G28) for Probe Clearance.
                                        // Be sure you have this distance over your Z_MAX_POS in case

  #define XY_TRAVEL_SPEED 3000         // X and Y axis travel speed between probes, in mm/min

  #define Z_RAISE_BEFORE_PROBING 10    //How much the extruder will be raised before traveling to the first probing point.
  #define Z_RAISE_BETWEEN_PROBINGS 10  //How much the extruder will be raised when traveling from between next probing points

  //#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
  //#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.

  //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
  //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
  // You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.

//  #define PROBE_SERVO_DEACTIVATION_DELAY 300


//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
//it is highly recommended you let this Z_SAFE_HOMING enabled!!!

  #define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
                          // When defined, it will:
                          // - Allow Z homing only after X and Y homing AND stepper drivers still enabled
                          // - If stepper drivers timeout, it will need X and Y homing again before Z homing
                          // - Position the probe in a defined XY point before Z Homing when homing all axis (G28)
                          // - Block Z homing only when the probe is outside bed area.

  #ifdef Z_SAFE_HOMING

    #define Z_SAFE_HOMING_X_POINT (X_MAX_LENGTH/2)    // X point for Z homing when homing all axis (G28)
    #define Z_SAFE_HOMING_Y_POINT (Y_MAX_LENGTH/2)    // Y point for Z homing when homing all axis (G28)

  #endif
/*
  #ifdef AUTO_BED_LEVELING_GRID	// Check if Probe_Offset * Grid Points is greater than Probing Range
    #if X_PROBE_OFFSET_FROM_EXTRUDER < 0
      #if (-(X_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
	  #endif
	#else
      #if ((X_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
	  #endif
	#endif
    #if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
      #if (-(Y_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
	  #endif
	#else
      #if ((Y_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
	  #endif
	#endif

	
  #endif */
  
#endif // ENABLE_AUTO_BED_LEVELING


// The position of the homing switches
//#define MANUAL_HOME_POSITIONS  // If defined, MANUAL_*_HOME_POS below will be used
//#define BED_CENTER_AT_0_0  // If defined, the center of the bed is at (X=0, Y=0)

//Manual homing switch locations:
// For deltabots this means top and center of the Cartesian print volume.
#define MANUAL_X_HOME_POS 0
#define MANUAL_Y_HOME_POS 0
#define MANUAL_Z_HOME_POS 0
//#define MANUAL_Z_HOME_POS 402 // For delta: Distance between nozzle and print surface after homing.

//// MOVEMENT SETTINGS
#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0}  // set the homing speeds (mm/min)

I'm almost done with building my first printer (Mendel90) and tried to test the electronics last night. I have a thermistor connected to E0 and a stepper motor connected to the X axis.

First I tried to install Neil Darlow's version of marlin for Mendlel90 and configure it for a ramps 1.4. I changed define motherboard to 33 and uploaded it to the Arduino. I had no control of the printer and my thermistors were reading 0.

I tried Nopheads version and I get the following error when I try to compile it:

Arduino: 1.6.9 (Windows 10), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

In file included from sketch\Gen7\cores\arduino\WInterrupts.c:33:0:

sketch\Gen7\cores\arduino\wiring_private.h:55:14: error: attempt to use poisoned "SIG_INTERRUPT7"

#if defined (SIG_INTERRUPT7)

sketch\Gen7\cores\arduino\wiring_private.h:57:16: error: attempt to use poisoned "SIG_INTERRUPT2"

#elif defined (SIG_INTERRUPT2)

exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.

I know the RAMPS board works because I downloaded and ran a test script successfully. This morning I uploaded marlin from here [github.com] and now I can see temperature from the thermistors and I can control the stepper motor with Pronterface.

I'd like to use a preconfigured version for the Mendel90 but I'm not sure what is going on with those. Why do I get an error for a Gen 7 when I have selected the RAMPS?

Do I have to change anything on marlin if i use DVR 8825 AND A4988 together on ramps 1.4 board

Hi All.

i olmost finist whi my firmware
my BLTouch is working now
But if i enabel the auto bed leveling, and if i do home in repetier. my nozele end in the middel of the bed (X100.Y76).
when auto bed leveling is off, the nozzle homing at the richt place (X0.Y0).

do i somthing rong in the firmware?

(my BLTouch is 24mm for the nozzle)

#ifndef CONFIGURATION_H
#define CONFIGURATION_H

#include "boards.h"
#include "macros.h"

//===========================================================================
//============================= Getting Started =============================
//===========================================================================
/*
Here are some standard links for getting your machine calibrated:
* [reprap.org]
* [youtu.be]
* [calculator.josefprusa.cz]
* [reprap.org]
* [www.thingiverse.com]
* [sites.google.com]
* [www.thingiverse.com]
*/

// This configuration file contains the basic settings.
// Advanced settings can be found in Configuration_adv.h
// BASIC SETTINGS: select your board type, temperature sensor type, axis scaling, and endstop configuration

//===========================================================================
//============================= DELTA Printer ===============================
//===========================================================================
// For a Delta printer replace the configuration files with the files in the
// example_configurations/delta directory.
//

//===========================================================================
//============================= SCARA Printer ===============================
//===========================================================================
// For a Scara printer replace the configuration files with the files in the
// example_configurations/SCARA directory.
//

// @section info

#if ENABLED(USE_AUTOMATIC_VERSIONING)
#include "_Version.h"
#else
#include "Default_Version.h"
#endif

// User-specified version info of this build to display in [Pronterface, etc] terminal window during
// startup. Implementation of an idea by Prof Braino to inform user that any changes made to this
// build by the user have been successfully uploaded into firmware.
#define STRING_CONFIG_H_AUTHOR "(none, default config)" // Who made the changes.
#define SHOW_BOOTSCREEN
#define STRING_SPLASH_LINE1 SHORT_BUILD_VERSION // will be shown during bootup in line 1
//#define STRING_SPLASH_LINE2 STRING_DISTRIBUTION_DATE // will be shown during bootup in line 2

// @section machine

// SERIAL_PORT selects which serial port should be used for communication with the host.
// This allows the connection of wireless adapters (for instance) to non-default port pins.
// Serial port 0 is still used by the Arduino bootloader regardless of this setting.
// :[0,1,2,3,4,5,6,7]
#define SERIAL_PORT 0

// This determines the communication speed of the printer
// :[2400,9600,19200,38400,57600,115200,250000]
#define BAUDRATE 250000

// Enable the Bluetooth serial interface on AT90USB devices
//#define BLUETOOTH

// The following define selects which electronics board you have.
// Please choose the name from boards.h that matches your setup
#ifndef MOTHERBOARD
#define MOTHERBOARD BOARD_RAMPS_13_EFB
#endif

// Optional custom name for your RepStrap or other custom machine
// Displayed in the LCD "Ready" message
//#define CUSTOM_MACHINE_NAME "3D Printer"

// Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
// You can use an online service to generate a random UUID. (eg [www.uuidgenerator.net])
//#define MACHINE_UUID "00000000-0000-0000-0000-000000000000"

// This defines the number of extruders
// :[1,2,3,4]
#define EXTRUDERS 1

// Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
// The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
// For the other hotends it is their distance from the extruder 0 hotend.
//#define EXTRUDER_OFFSET_X {0.0, 20.00} // (in mm) for each extruder, offset of the hotend on the X axis
//#define EXTRUDER_OFFSET_Y {0.0, 5.00} // (in mm) for each extruder, offset of the hotend on the Y axis

//// The following define selects which power supply you have. Please choose the one that matches your setup
// 1 = ATX
// 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
// :{1:'ATX',2:'X-Box 360'}

#define POWER_SUPPLY 1

// Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.
//#define PS_DEFAULT_OFF

// @section temperature

//===========================================================================
//============================= Thermal Settings ============================
//===========================================================================
//
//--NORMAL IS 4.7kohm PULLUP!-- 1kohm pullup can be used on hotend sensor, using correct resistor and table
//
//// Temperature sensor settings:
// -2 is thermocouple with MAX6675 (only for sensor 0)
// -1 is thermocouple with AD595
// 0 is not used
// 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
// 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
// 3 is Mendel-parts thermistor (4.7k pullup)
// 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
// 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
// 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
// 7 is 100k Honeywell thermistor 135-104LAG-J01 (4.7k pullup)
// 71 is 100k Honeywell thermistor 135-104LAF-J01 (4.7k pullup)
// 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
// 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
// 10 is 100k RS thermistor 198-961 (4.7k pullup)
// 11 is 100k beta 3950 1% thermistor (4.7k pullup)
// 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
// 13 is 100k Hisens 3950 1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
// 20 is the PT100 circuit found in the Ultimainboard V2.x
// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
//
// 1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k
// (but gives greater accuracy and more stable PID)
// 51 is 100k thermistor - EPCOS (1k pullup)
// 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
//
// 1047 is Pt1000 with 4k7 pullup
// 1010 is Pt1000 with 1k pullup (non standard)
// 147 is Pt100 with 4k7 pullup
// 110 is Pt100 with 1k pullup (non standard)
// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below.
// Use it for Testing or Development purposes. NEVER for production machine.
//#define DUMMY_THERMISTOR_998_VALUE 25
//#define DUMMY_THERMISTOR_999_VALUE 100
// :{ '0': "Not used", '4': "10k !! do not use for a hotend. Bad resolution at high temp. !!", '1': "100k / 4.7k - EPCOS", '51': "100k / 1k - EPCOS", '6': "100k / 4.7k EPCOS - Not as accurate as Table 1", '5': "100K / 4.7k - ATC Semitec 104GT-2 (Used in ParCan & J-Head)", '7': "100k / 4.7k Honeywell 135-104LAG-J01", '71': "100k / 4.7k Honeywell 135-104LAF-J01", '8': "100k / 4.7k 0603 SMD Vishay NTCS0603E3104FXT", '9': "100k / 4.7k GE Sensing AL03006-58.2K-97-G1", '10': "100k / 4.7k RS 198-961", '11': "100k / 4.7k beta 3950 1%", '12': "100k / 4.7k 0603 SMD Vishay NTCS0603E3104FXT (calibrated for Makibox hot bed)", '13': "100k Hisens 3950 1% up to 300°C for hotend 'Simple ONE ' & hotend 'All In ONE'", '60': "100k Maker's Tool Works Kapton Bed Thermistor beta=3950", '55': "100k / 1k - ATC Semitec 104GT-2 (Used in ParCan & J-Head)", '2': "200k / 4.7k - ATC Semitec 204GT-2", '52': "200k / 1k - ATC Semitec 204GT-2", '-2': "Thermocouple + MAX6675 (only for sensor 0)", '-1': "Thermocouple + AD595", '3': "Mendel-parts / 4.7k", '1047': "Pt1000 / 4.7k", '1010': "Pt1000 / 1k (non standard)", '20': "PT100 (Ultimainboard V2.x)", '147': "Pt100 / 4.7k", '110': "Pt100 / 1k (non-standard)", '998': "Dummy 1", '999': "Dummy 2" }
#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_1 0
#define TEMP_SENSOR_2 0
#define TEMP_SENSOR_3 0
#define TEMP_SENSOR_BED 1

// This makes temp sensor 1 a redundant sensor for sensor 0. If the temperatures difference between these sensors is to high the print will be aborted.
//#define TEMP_SENSOR_1_AS_REDUNDANT
#define MAX_REDUNDANT_TEMP_SENSOR_DIFF 10

// Actual temperature must be close to target for this long before M109 returns success
#define TEMP_RESIDENCY_TIME 10 // (seconds)
#define TEMP_HYSTERESIS 3 // (degC) range of +/- temperatures considered "close" to the target one
#define TEMP_WINDOW 1 // (degC) Window around target to start the residency timer x degC early.

// The minimal temperature defines the temperature below which the heater will not be enabled It is used
// to check that the wiring to the thermistor is not broken.
// Otherwise this would lead to the heater being powered on all the time.
#define HEATER_0_MINTEMP 5
#define HEATER_1_MINTEMP 5
#define HEATER_2_MINTEMP 5
#define HEATER_3_MINTEMP 5
#define BED_MINTEMP 5

// When temperature exceeds max temp, your heater will be switched off.
// This feature exists to protect your hotend from overheating accidentally, but *NOT* from thermistor short/failure!
// You should use MINTEMP for thermistor short/failure protection.
#define HEATER_0_MAXTEMP 275
#define HEATER_1_MAXTEMP 275
#define HEATER_2_MAXTEMP 275
#define HEATER_3_MAXTEMP 275
#define BED_MAXTEMP 150

// If your bed has low resistance e.g. .6 ohm and throws the fuse you can duty cycle it to reduce the
// average current. The value should be an integer and the heat bed will be turned on for 1 interval of
// HEATER_BED_DUTY_CYCLE_DIVIDER intervals.
//#define HEATER_BED_DUTY_CYCLE_DIVIDER 4

// If you want the M105 heater power reported in watts, define the BED_WATTS, and (shared for all extruders) EXTRUDER_WATTS
//#define EXTRUDER_WATTS (12.0*12.0/6.7) // P=I^2/R
//#define BED_WATTS (12.0*12.0/1.1) // P=I^2/R

//===========================================================================
//============================= PID Settings ================================
//===========================================================================
// PID Tuning Guide here: [reprap.org]

// Comment the following line to disable PID and enable bang-bang.
#define PIDTEMP
#define BANG_MAX 255 // limits current to nozzle while in bang-bang mode; 255=full current
#define PID_MAX BANG_MAX // limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
#if ENABLED(PIDTEMP)
//#define PID_DEBUG // Sends debug data to the serial port.
//#define PID_OPENLOOP 1 // Puts PID in open loop. M104/M140 sets the output power from 0 to PID_MAX
//#define SLOW_PWM_HEATERS // PWM with very low frequency (roughly 0.125Hz=8s) and minimum state time of approximately 1s useful for heaters driven by a relay
//#define PID_PARAMS_PER_EXTRUDER // Uses separate PID parameters for each extruder (useful for mismatched extruders)
// Set/get with gcode: M301 E[extruder number, 0-2]
#define PID_FUNCTIONAL_RANGE 10 // If the temperature difference between the target temperature and the actual temperature
// is more then PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
#define PID_INTEGRAL_DRIVE_MAX PID_MAX //limit for the integral term
#define K1 0.95 //smoothing factor within the PID

// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
// aak E3D GRABER i3
#define DEFAULT_Kp 40.53
#define DEFAULT_Ki 5.81
#define DEFAULT_Kd 70.73

// Ultimaker
//#define DEFAULT_Kp 22.2
//#define DEFAULT_Ki 1.08
//#define DEFAULT_Kd 114

// MakerGear
//#define DEFAULT_Kp 7.0
//#define DEFAULT_Ki 0.1
//#define DEFAULT_Kd 12

// Mendel Parts V9 on 12V
//#define DEFAULT_Kp 63.0
//#define DEFAULT_Ki 2.25
//#define DEFAULT_Kd 440

#endif // PIDTEMP

//===========================================================================
//============================= PID > Bed Temperature Control ===============
//===========================================================================
// Select PID or bang-bang with PIDTEMPBED. If bang-bang, BED_LIMIT_SWITCHING will enable hysteresis
//
// Uncomment this to enable PID on the bed. It uses the same frequency PWM as the extruder.
// If your PID_dT is the default, and correct for your hardware/configuration, that means 7.689Hz,
// which is fine for driving a square wave into a resistive load and does not significantly impact you FET heating.
// This also works fine on a Fotek SSR-10DA Solid State Relay into a 250W heater.
// If your configuration is significantly different than this and you don't understand the issues involved, you probably
// shouldn't use bed PID until someone else verifies your hardware works.
// If this is enabled, find your own PID constants below.
//#define PIDTEMPBED

//#define BED_LIMIT_SWITCHING

// This sets the max power delivered to the bed, and replaces the HEATER_BED_DUTY_CYCLE_DIVIDER option.
// all forms of bed control obey this (PID, bang-bang, bang-bang with hysteresis)
// setting this to anything other than 255 enables a form of PWM to the bed just like HEATER_BED_DUTY_CYCLE_DIVIDER did,
// so you shouldn't use it unless you are OK with PWM on your bed. (see the comment on enabling PIDTEMPBED)
#define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current

//#define PID_BED_DEBUG // Sends debug data to the serial port.

#if ENABLED(PIDTEMPBED)

#define PID_BED_INTEGRAL_DRIVE_MAX MAX_BED_POWER //limit for the integral term

//aak GRABER i3 12v print-bed met 4mm borosilicate
#define DEFAULT_bedKp 10.00
#define DEFAULT_bedKi .023
#define DEFAULT_bedKd 305.4

//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
//from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
//#define DEFAULT_bedKp 10.00
//#define DEFAULT_bedKi .023
//#define DEFAULT_bedKd 305.4

//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
//from pidautotune
//#define DEFAULT_bedKp 97.1
//#define DEFAULT_bedKi 1.41
//#define DEFAULT_bedKd 1675.16

// FIND YOUR OWN: "M303 E-1 C8 S90" to run autotune on the bed at 90 degreesC for 8 cycles.
#endif // PIDTEMPBED

// @section extruder

//this prevents dangerous Extruder moves, i.e. if the temperature is under the limit
//can be software-disabled for whatever purposes by
#define PREVENT_DANGEROUS_EXTRUDE
//if PREVENT_DANGEROUS_EXTRUDE is on, you can still disable (uncomment) very long bits of extrusion separately.
#define PREVENT_LENGTHY_EXTRUDE

#define EXTRUDE_MINTEMP 170
#define EXTRUDE_MAXLENGTH (X_MAX_LENGTH+Y_MAX_LENGTH) //prevent extrusion of very large distances.

//===========================================================================
//======================== Thermal Runaway Protection =======================
//===========================================================================

/**
* Thermal Runaway 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,
* the firmware will halt as a safety precaution.
*/

#define THERMAL_PROTECTION_HOTENDS // Enable thermal protection for all extruders
#define THERMAL_PROTECTION_BED // Enable thermal protection for the heated bed

//===========================================================================
//============================= Mechanical Settings =========================
//===========================================================================

// @section machine

// Uncomment this option to enable CoreXY kinematics
//#define COREXY

// Uncomment this option to enable CoreXZ kinematics
//#define COREXZ

// Enable this option for Toshiba steppers
//#define CONFIG_STEPPERS_TOSHIBA

// @section homing

// coarse Endstop Settings
#define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors

#if DISABLED(ENDSTOPPULLUPS)
// fine endstop settings: Individual pullups. will be ignored if ENDSTOPPULLUPS is defined
//#define ENDSTOPPULLUP_XMAX
//#define ENDSTOPPULLUP_YMAX
//#define ENDSTOPPULLUP_ZMAX
#define ENDSTOPPULLUP_XMIN // aak
//#define ENDSTOPPULLUP_YMIN
//#define ENDSTOPPULLUP_ZMIN
//#define ENDSTOPPULLUP_ZMIN_PROBE
#endif

// Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
const bool X_MAX_ENDSTOP_INVERTING = true; // aak set to true to invert the logic of the endstop.
const bool Y_MAX_ENDSTOP_INVERTING = true; // aak set to true to invert the logic of the endstop.
const bool Z_MAX_ENDSTOP_INVERTING = true; // aak set to true to invert the logic of the endstop.
const bool Z_MIN_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
//#define DISABLE_MAX_ENDSTOPS
//#define DISABLE_MIN_ENDSTOPS

// If you want to enable the Z probe pin, but disable its use, uncomment the line below.
// This only affects a Z probe endstop if you have separate Z min endstop as well and have
// activated Z_MIN_PROBE_ENDSTOP below. If you are using the Z Min endstop on your Z probe,
// this has no effect.
//#define DISABLE_Z_MIN_PROBE_ENDSTOP

// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
// :{0:'Low',1:'High'}
#define X_ENABLE_ON 0
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 0
#define E_ENABLE_ON 0 // For all extruders

// Disables axis when it's not being used.
// WARNING: When motors turn off there is a chance of losing position accuracy!
#define DISABLE_X false
#define DISABLE_Y false
#define DISABLE_Z false

// @section extruder

#define DISABLE_E false // For all extruders
#define DISABLE_INACTIVE_EXTRUDER true //disable only inactive extruders and keep active extruder enabled

// @section machine

// Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
#define INVERT_X_DIR true // aak
#define INVERT_Y_DIR true // aak
#define INVERT_Z_DIR false

// @section extruder

// For direct drive extruder v9 set to true, for geared extruder set to false.
#define INVERT_E0_DIR false
#define INVERT_E1_DIR false
#define INVERT_E2_DIR false
#define INVERT_E3_DIR false

// @section homing

// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
// :[-1,1]
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1

#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS.
#define max_software_endstops true // If true, axis won't move to coordinates greater than the defined lengths below.

// @section machine

// Travel limits after homing (units are in mm)
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define X_MAX_POS 200
#define Y_MAX_POS 200
#define Z_MAX_POS 200

//===========================================================================
//========================= Filament Runout Sensor ==========================
//===========================================================================
//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
// In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
// It is assumed that when logic high = filament available
// when logic low = filament ran out
#if ENABLED(FILAMENT_RUNOUT_SENSOR)
const bool FIL_RUNOUT_INVERTING = true; // Should be uncommented and true or false should assigned
#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
#define FILAMENT_RUNOUT_SCRIPT "M600"
#endif

//===========================================================================
//=========================== Manual Bed Leveling ===========================
//===========================================================================

//#define MANUAL_BED_LEVELING // aak Add display menu option for bed leveling.
//#define MESH_BED_LEVELING // Enable mesh bed leveling.

#if ENABLED(MANUAL_BED_LEVELING)
#define MBL_Z_STEP 0.025 // Step size while manually probing Z axis.
#endif // MANUAL_BED_LEVELING

#if ENABLED(MESH_BED_LEVELING)
#define MESH_MIN_X 10
#define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
#define MESH_MIN_Y 10
#define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
#define MESH_NUM_X_POINTS 3 // Don't use more than 7 points per axis, implementation limited.
#define MESH_NUM_Y_POINTS 3
#define MESH_HOME_SEARCH_Z 4 // Z after Home, bed somewhere below but above 0.0.
#endif // MESH_BED_LEVELING

//===========================================================================
//============================ Bed Auto Leveling ============================
//===========================================================================

// @section bedlevel

#define AUTO_BED_LEVELING_FEATURE // aak Delete the comment to enable (remove // at the start of the line)
//#define DEBUG_LEVELING_FEATURE
#define Z_MIN_PROBE_REPEATABILITY_TEST // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.

#if ENABLED(AUTO_BED_LEVELING_FEATURE)

// There are 2 different ways to specify probing locations:
//
// - "grid" mode
// Probe several points in a rectangular grid.
// You specify the rectangle and the density of sample points.
// This mode is preferred because there are more measurements.
//
// - "3-point" mode
// Probe 3 arbitrary points on the bed (that aren't colinear)
// You specify the XY coordinates of all 3 points.

// 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

#if ENABLED(AUTO_BED_LEVELING_GRID) //XXXXXXXXXXXXXXXXXXXXXXXXXXXXX hier voor ABL

#define LEFT_PROBE_BED_POSITION 15 // aak
#define RIGHT_PROBE_BED_POSITION 180 // aak
#define FRONT_PROBE_BED_POSITION 40
#define BACK_PROBE_BED_POSITION 150 // aak

#define MIN_PROBE_EDGE 10 // The Z probe minimum square sides can be no smaller than this.

// Set the number of grid points per dimension.
// You probably don't need more than 3 (squared=9).
#define AUTO_BED_LEVELING_GRID_POINTS 3

#else // !AUTO_BED_LEVELING_GRID

// Arbitrary points to probe.
// A simple cross-product is used to estimate the plane of the bed.
#define ABL_PROBE_PT_1_X 15
#define ABL_PROBE_PT_1_Y 180
#define ABL_PROBE_PT_2_X 15
#define ABL_PROBE_PT_2_Y 20
#define ABL_PROBE_PT_3_X 170
#define ABL_PROBE_PT_3_Y 20

#endif // AUTO_BED_LEVELING_GRID

// Offsets to the Z probe relative to the nozzle tip.
// X and Y offsets must be integers.
#define X_PROBE_OFFSET_FROM_EXTRUDER 0 // aak Z probe to nozzle X offset: -left +right
#define Y_PROBE_OFFSET_FROM_EXTRUDER 24 // aak Z probe to nozzle Y offset: -front +behind
#define Z_PROBE_OFFSET_FROM_EXTRUDER -4.00 // aak Z probe to nozzle Z offset: -below (always!)

#define Z_RAISE_BEFORE_HOMING 4 // (in mm) Raise Z axis before homing (G28) for Z probe clearance.
// Be sure you have this distance over your Z_MAX_POS in case.

#define XY_TRAVEL_SPEED 8000 // aak 8000 X and Y axis travel speed between probes, in mm/min.

#define Z_RAISE_BEFORE_PROBING 3 // aak How much the Z axis will be raised before traveling to the first probing point.
#define Z_RAISE_BETWEEN_PROBINGS 3 // How much the Z axis will be raised when traveling from between next probing points.
#define Z_RAISE_AFTER_PROBING 3 // aak How much the Z axis will be raised after the last probing point.

//#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_SLED // Turn on if you have a Z probe mounted on a sled like those designed by Charles Bell.
//#define SLED_DOCKING_OFFSET 5 // The extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.


//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
//it is highly recommended you let this Z_SAFE_HOMING enabled!!!

#define Z_SAFE_HOMING // 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 stepper drivers timeout, it will need X and Y homing again before Z homing.
// - Position the Z probe in a defined XY point before Z Homing when homing all axis (G28).
// - Block Z homing only when the Z probe is outside bed area.

#if ENABLED(Z_SAFE_HOMING)

#define Z_SAFE_HOMING_X_POINT ((X_MIN_POS + X_MAX_POS) / 2) // aak ???? X point for Z homing when homing all axis (G28).
#define Z_SAFE_HOMING_Y_POINT ((Y_MIN_POS + Y_MAX_POS) / 2) // aak ???? Y point for Z homing when homing all axis (G28).

#endif

// Support for a dedicated Z probe endstop separate from the Z min endstop.
// If you would like to use both a Z probe and a Z min endstop together,
// uncomment #define Z_MIN_PROBE_ENDSTOP and read the instructions below.
// If you still want to use the Z min endstop for homing, disable Z_SAFE_HOMING above.
// Example: To park the head outside the bed area when homing with G28.
//
// WARNING:
// The Z min endstop will need to set properly as it would without a Z probe
// to prevent head crashes and premature stopping during a print.
//
// To use a separate Z probe endstop, you must have a Z_MIN_PROBE_PIN
// defined in the pins_XXXXX.h file for your control board.
// If you are using a servo based Z probe, you will need to enable NUM_SERVOS,
// Z_ENDSTOP_SERVO_NR and SERVO_ENDSTOP_ANGLES in the R/C SERVO support below.
// RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin
// in the Aux 4 section of the RAMPS board. Use 5V for powered sensors,
// otherwise connect to ground and D32 for normally closed configuration
// and 5V and D32 for normally open configurations.
// Normally closed configuration is advised and assumed.
// The D32 pin in Aux 4 on RAMPS maps to the Arduino D32 pin.
// Z_MIN_PROBE_PIN is setting the pin to use on the Arduino.
// Since the D32 pin on the RAMPS maps to D32 on Arduino, this works.
// D32 is currently selected in the RAMPS 1.3/1.4 pin file.
// All other boards will need changes to the respective pins_XXXXX.h file.
//
// WARNING:
// Setting the wrong pin may have unexpected and potentially disastrous outcomes.
// Use with caution and do your homework.
//
//#define Z_MIN_PROBE_ENDSTOP

#endif // AUTO_BED_LEVELING_FEATURE


// @section homing

// The position of the homing switches
//#define MANUAL_HOME_POSITIONS // If defined, MANUAL_*_HOME_POS below will be used
//#define BED_CENTER_AT_0_0 // If defined, the center of the bed is at (X=0, Y=0)

// Manual homing switch locations:
// For deltabots this means top and center of the Cartesian print volume.
#if ENABLED(MANUAL_HOME_POSITIONS)
#define MANUAL_X_HOME_POS 0
#define MANUAL_Y_HOME_POS 0
#define MANUAL_Z_HOME_POS 0
//#define MANUAL_Z_HOME_POS 402 // For delta: Distance between nozzle and print surface after homing.
#endif

// @section movement

/**
* MOVEMENT SETTINGS
*/

#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} // set the homing speeds (mm/min)

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,1280,500} // aak default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {300, 300, 5, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,100,10000} // 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 3000 // aak 3000 X, Y, Z and E acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // aak 3000 E acceleration in mm/s^2 for retracts
#define DEFAULT_TRAVEL_ACCELERATION 3000 // aak 3000 X, Y, Z acceleration in mm/s^2 for travel (non printing) moves

// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)


//=============================================================================
//============================= Additional Features ===========================
//=============================================================================

// @section more

// Custom M code points
#define CUSTOM_M_CODES
#if ENABLED(CUSTOM_M_CODES)
#if ENABLED(AUTO_BED_LEVELING_FEATURE)
#define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
#define Z_PROBE_OFFSET_RANGE_MIN -20
#define Z_PROBE_OFFSET_RANGE_MAX 20
#endif
#endif

// @section extras

// EEPROM
// The microcontroller can store settings in the EEPROM, e.g. max velocity...
// M500 - stores parameters in EEPROM
// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
// M502 - reverts to the default "factory settings". You still need to store them in EEPROM afterwards if you want to.
//define this to enable EEPROM support
//#define EEPROM_SETTINGS

#if ENABLED(EEPROM_SETTINGS)
// To disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
#define EEPROM_CHITCHAT // Please keep turned on if you can.
#endif

//
// M100 Free Memory Watcher
//
//#define M100_FREE_MEMORY_WATCHER // uncomment to add the M100 Free Memory Watcher for debug purpose

// @section temperature

// Preheat Constants
#define PLA_PREHEAT_HOTEND_TEMP 180
#define PLA_PREHEAT_HPB_TEMP 70
#define PLA_PREHEAT_FAN_SPEED 0 // Insert Value between 0 and 255

#define ABS_PREHEAT_HOTEND_TEMP 240
#define ABS_PREHEAT_HPB_TEMP 130 // aak
#define ABS_PREHEAT_FAN_SPEED 0 // Insert Value between 0 and 255

//==============================LCD and SD support=============================
// @section lcd

// Define your display language below. Replace (en) with your language code and uncomment.
// en, pl, fr, de, es, ru, bg, it, pt, pt-br, fi, an, nl, ca, eu, kana, kana_utf8, cn, test
// See also language.h
#define LANGUAGE_INCLUDE GENERATE_LANGUAGE_INCLUDE(nl)

// Choose ONE of these 3 charsets. This has to match your hardware. Ignored for full graphic display.
// To find out what type you have - compile with (test) - upload - click to get the menu. You'll see two typical lines from the upper half of the charset.
// See also documentation/LCDLanguageFont.md
#define DISPLAY_CHARSET_HD44780_JAPAN // this is the most common hardware
//#define DISPLAY_CHARSET_HD44780_WESTERN
//#define DISPLAY_CHARSET_HD44780_CYRILLIC

#define ULTRA_LCD // aak general LCD support, also 16x2
//#define DOGLCD // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
#define SDSUPPORT // aak Enable SD Card Support in Hardware Console
// Changed behaviour! If you need SDSUPPORT uncomment it!
//#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
//#define SDEXTRASLOW // Use even slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
//#define SD_CHECK_AND_RETRY // Use CRC checks and retries on the SD communication
#define ENCODER_PULSES_PER_STEP 1 // aak Increase if you have a high resolution encoder
//#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
//#define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
#define ULTIPANEL // aak the UltiPanel as on Thingiverse
//#define SPEAKER // The sound device is a speaker - not a buzzer. A buzzer resonates with his own frequency.
//#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
//#define LCD_FEEDBACK_FREQUENCY_HZ 1000 // this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
// 0 to disable buzzer feedback. Test with M300 S P
// PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
// [reprap.org]
//#define PANEL_ONE

// The MaKr3d Makr-Panel with graphic controller and SD support
// [reprap.org]
//#define MAKRPANEL

// The Panucatt Devices Viki 2.0 and mini Viki with Graphic LCD
// [panucatt.com]
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: [code.google.com]
//#define VIKI2
//#define miniVIKI

// This is a new controller currently under development. [github.com]
//
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: [code.google.com]
//#define ELB_FULL_GRAPHIC_CONTROLLER
//#define SD_DETECT_INVERTED

// The RepRapDiscount Smart Controller (white PCB)
// [reprap.org]
#define REPRAP_DISCOUNT_SMART_CONTROLLER

// The GADGETS3D G3D LCD/SD Controller (blue PCB)
// [reprap.org]
//#define G3D_PANEL

// The RepRapDiscount FULL GRAPHIC Smart Controller (quadratic white PCB)
// [reprap.org]
//
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: [code.google.com]
//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

// The RepRapWorld REPRAPWORLD_KEYPAD v1.1
// [reprapworld.com]
//#define REPRAPWORLD_KEYPAD
//#define REPRAPWORLD_KEYPAD_MOVE_STEP 10.0 // how much should be moved when a key is pressed, eg 10.0 means 10mm per click

// The Elefu RA Board Control Panel
// [www.elefu.com]
// REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: [github.com]
//#define RA_CONTROL_PANEL

// The MakerLab Mini Panel with graphic controller and SD support
// [reprap.org]
//#define MINIPANEL

/**
* I2C Panels
*/

//#define LCD_I2C_SAINSMART_YWROBOT

// PANELOLU2 LCD with status LEDs, separate encoder and click inputs
//
// This uses the LiquidTWI2 library v1.2.3 or later ( [github.com] )
// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
// (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
//#define LCD_I2C_PANELOLU2

// Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
//#define LCD_I2C_VIKI

// SSD1306 OLED generic display support
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: [code.google.com]
//#define U8GLIB_SSD1306

// Shift register panels
// ---------------------
// 2 wire Non-latching LCD SR from:
// [bitbucket.org]
// LCD configuration: [reprap.org]
//#define SAV_3DLCD

// @section extras

// Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
//#define FAST_PWM_FAN

// Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
// which is not as annoying as with the hardware PWM. On the other hand, if this frequency
// is too low, you should also increment SOFT_PWM_SCALE.
//#define FAN_SOFT_PWM

// Incrementing this by 1 will double the software PWM frequency,
// affecting heaters, and the fan if FAN_SOFT_PWM is enabled.
// However, control resolution will be halved for each increment;
// at zero value, there are 128 effective control positions.
#define SOFT_PWM_SCALE 0

// Temperature status LEDs that display the hotend and bet temperature.
// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
// Otherwise the RED led is on. There is 1C hysteresis.
//#define TEMP_STAT_LEDS

// M240 Triggers a camera by emulating a Canon RC-1 Remote
// Data from: [www.doc-diy.net]
//#define PHOTOGRAPH_PIN 23

// SkeinForge sends the wrong arc g-codes when using Arc Point as fillet procedure
//#define SF_ARC_FIX

// Support for the BariCUDA Paste Extruder.
//#define BARICUDA

//define BlinkM/CyzRgb Support
//#define BLINKM

/*********************************************************************\
* R/C SERVO support
* Sponsored by TrinityLabs, Reworked by codexmas
**********************************************************************/

// Number of servos
//
// If you select a configuration below, this will receive a default value and does not need to be set manually
// set it manually if you have more servos than extruders and wish to manually control some
// leaving it undefined or defining as 0 will disable the servo subsystem
// If unsure, leave commented / disabled
//
#define NUM_SERVOS 3 // aak Servo index starts with 0 for M280 command

// Servo Endstops
//
// This allows for servo actuated endstops, primary usage is for the Z Axis to eliminate calibration or bed height changes.
// Use M851 to set the Z probe vertical offset from the nozzle. Store that setting with M500.
//
//#define X_ENDSTOP_SERVO_NR 1
//#define Y_ENDSTOP_SERVO_NR 2
#define Z_ENDSTOP_SERVO_NR 1 // aak
#define SERVO_ENDSTOP_ANGLES {{0,0}, {0,0}, {10,90}} // aak X,Y,Z Axis Extend and Retract angles

// Servo deactivation
//
// With this option servos are powered only during movement, then turned off to prevent jitter.
//#define DEACTIVATE_SERVOS_AFTER_MOVE

#if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
// Delay (in microseconds) before turning the servo off. This depends on the servo speed.
// 300ms is a good value but you can try less delay.
// If the servo can't reach the requested position, increase it.
#define SERVO_DEACTIVATION_DELAY 300
#endif

/**********************************************************************\
* Support for a filament diameter sensor
* Also allows adjustment of diameter at print time (vs at slicing)
* Single extruder only at this point (extruder 0)
*
* Motherboards
* 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector
* 81 - Printrboard - Uses Analog input 2 on the Exp1 connector (version B,C,D,E)
* 301 - Rambo - uses Analog input 3
* Note may require analog pins to be defined for different motherboards
**********************************************************************/
// Uncomment below to enable
//#define FILAMENT_SENSOR

#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 DEFAULT_NOMINAL_FILAMENT_DIA 3.00 //Enter the diameter (in mm) of the filament generally used (3.0 mm or 1.75 mm) - this is then used in the slicer software. Used for sensor reading validation
#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)

//defines used in the code
#define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA //set measured to nominal initially

//When using an LCD, uncomment the line below to display the Filament sensor data on the last line instead of status. Status will appear for 5 sec.
//#define FILAMENT_LCD_DISPLAY

#include "Configuration_adv.h"
#include "thermistortables.h"

#endif //CONFIGURATION_H



can some body look and help my

Thanks

anyone know what I am missing with this

Arduino: 1.6.9 (Windows 7), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

In file included from sketch\language.h:240:0,

from sketch\ultralcd.cpp:4:

sketch\language_en.h:172:45: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix]

#define MSG_MIN " "LCD_STR_THERMOMETER " Min"

^

sketch\language_en.h:175:45: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix]

#define MSG_MAX " "LCD_STR_THERMOMETER " Max"

^

sketch\language_en.h:178:45: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix]

#define MSG_FACTOR " "LCD_STR_THERMOMETER " Fact"

^

In file included from sketch\ultralcd.cpp:37:0:

dogm_lcd_implementation.h:131: error: 'DOGLCD_CS' was not declared in this scope

U8GLIB_DOGM128 u8g(DOGLCD_CS, DOGLCD_A0); // HW-SPI Com: CS, A0

^

dogm_lcd_implementation.h:131: error: 'DOGLCD_A0' was not declared in this scope

U8GLIB_DOGM128 u8g(DOGLCD_CS, DOGLCD_A0); // HW-SPI Com: CS, A0

^

exit status 1
'DOGLCD_CS' was not declared in this scope

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

if I turn on verbose it is a lot bigger but means less to me

Cheers for looking

Mike

Hello. This is my first build and I am having trouble uploading firmware to my printrboard. Everytime I go to verify I get this error message :
[attachment 78547 Screenshot2.png]

I have tried a few different versions of adruino with the same results.

All good !
I decided to put myself arduino due.
He faced an unexpected problem . Firmware is compiled with errors . Very large kolichesivom them . Even unmodified . I tried to reinstall the arduino environment . I have downloaded a different version . All to no avail ( What do I do ?

Quote
log

sketch\module\lcd\../../module/HAL/HAL.h:81:142: error: 'DIOLCD_PINS_D4_PIN' was not declared in this scope

   #define  _WRITE(port, v)   do { if (v) {DIO ##  port ## _PORT -> PIO_SODR = DIO ## port ## _PIN; } else {DIO ##  port ## _PORT->PIO_CODR = DIO ## port ## _PIN; }; } while (0)

                                                                                                                                              ^

sketch\module\lcd\../../module/HAL/HAL.h:82:24: note: in expansion of macro '_WRITE'

   #define WRITE(pin,v) _WRITE(pin,v)

                        ^

sketch\module\lcd\../../module/HAL/HAL.h:93:47: note: in expansion of macro 'WRITE'

   #define OUT_WRITE(IO, v)  { SET_OUTPUT(IO); WRITE(IO, v); }

                                               ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:91:7: note: in expansion of macro 'OUT_WRITE'

       OUT_WRITE(ST7920_CLK_PIN, HIGH);

       ^

In file included from sketch\module\lcd\dogm_lcd_implementation.h:64:0,

                 from sketch\module\lcd\ultralcd.cpp:84:

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:33:25: error: 'LCD_PINS_RS' was not declared in this scope

 #define ST7920_CS_PIN   LCD_PINS_RS

                         ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:55:50: note: in expansion of macro 'ST7920_CS_PIN'

   #define ST7920_CS()              {digitalWrite(ST7920_CS_PIN, 1);u8g_10MicroDelay();}

                                                  ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:93:7: note: in expansion of macro 'ST7920_CS'

       ST7920_CS();

       ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:33:25: error: 'LCD_PINS_RS' was not declared in this scope

 #define ST7920_CS_PIN   LCD_PINS_RS

                         ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:56:50: note: in expansion of macro 'ST7920_CS_PIN'

   #define ST7920_NCS()             {digitalWrite(ST7920_CS_PIN, 0);}

                                                  ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:109:7: note: in expansion of macro 'ST7920_NCS'

       ST7920_NCS();

       ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:33:25: error: 'LCD_PINS_RS' was not declared in this scope

 #define ST7920_CS_PIN   LCD_PINS_RS

                         ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:55:50: note: in expansion of macro 'ST7920_CS_PIN'

   #define ST7920_CS()              {digitalWrite(ST7920_CS_PIN, 1);u8g_10MicroDelay();}

                                                  ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:120:7: note: in expansion of macro 'ST7920_CS'

       ST7920_CS();

       ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:33:25: error: 'LCD_PINS_RS' was not declared in this scope

 #define ST7920_CS_PIN   LCD_PINS_RS

                         ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:56:50: note: in expansion of macro 'ST7920_CS_PIN'

   #define ST7920_NCS()             {digitalWrite(ST7920_CS_PIN, 0);}

                                                  ^

sketch\module\lcd\ultralcd_st7920_u8glib_rrd.h:135:7: note: in expansion of macro 'ST7920_NCS'

       ST7920_NCS();

       ^

exit status 1
Ошибка компиляции для платы Arduino Due (Programming Port).

The Marlin Team is trying to make sure we are supporting the right hardware platforms.

If you are running a RepRap printer with Marlin, please spend 1 minute and do the survey located here: [goo.gl]

The results of the survey are being discussed in this thread: [github.com]

Hello together,
i use the Marlin-Firmware at my CNC-Router as the Firmware on the Ramps for my CNC. I am very happy with it because it works very well.( I use it also at my Deltaprinter.)

At the moment i want to go the next step and detect automatically where my workpiece (stock) is. (Only the Z-Height)
For this i mounted a rc-servo with a attached microswitch beside my spindle.

The sequence i have in my mind is as follow:
1) I move the spindle manually above the work piece(only x- and y-movement)
2) I execute a special GXY-command (maybe modified G29,G30) to detect the surface of my workpiece.

This special "special GXY-command (maybe a modified G29,G30-command)" should move the servo controlled microswitch down to z- (M280), then move the z-axis down until the microswitch touches the workpiece and store the this value -for example- as zero. After that the z-axis is moved up und retract the micro switch(again M280).

I tried to modify the G30-Command and use this. But it didn't worked(i am only a mechanical engineer.)....

Most of the attempts i did at my deltaprinter - just as test environment - Could that(delta) be a problem?

If anyone has a idea about keywords to search here in the forum or any blogs in the www - would be very grateful!
thank you very much!

Nathan

P.S.: information about our router and printers: www.6brueder.wordpress.com

I am building a DLP 3d printer using ramps and arduino and am having trouble finding the proper software and firmware. An instructables pointed me towards pacman's software but the links were outdated. Can anyone help?

So I was setting up Marlin for my new printer, firmware version Marlin 1.1.0-RC4 (not the latest but I've used it before) and did a compile check. It came up with this error;

Quote

Build options changed, rebuilding all
In file included from sketch/Configuration.h:41:0,
                 from Marlin-RC/Marlin/Marlin.ino:37:
boards.h:94: error: operator '==' has no right operand
 #define MB(board) (MOTHERBOARD==BOARD_##board)
                                              ^
sketch/pins.h:82:7: note: in expansion of macro 'MB'
 #elif MB(ULTIMAKER)
       ^
In file included from sketch/Configuration_adv.h:658:0,
                 from sketch/Configuration.h:941,
                 from Marlin-RC/Marlin/Marlin.ino:37:
Conditionals.h:518: error: operator '&&' has no right operand
   #define HAS_FAN2 (PIN_EXISTS(FAN2) && CONTROLLERFAN_PIN != FAN2_PIN && EXTRUDER_0_AUTO_FAN_PIN != FAN2_PIN && EXTRUDER_1_AUTO_FAN_PIN != FAN2_PIN && EXTRUDER_2_AUTO_FAN_PIN != FAN2_PIN)
                                                           ^
sketch/Conditionals.h:609:7: note: in expansion of macro 'HAS_FAN2'
   #if HAS_FAN2
       ^
In file included from sketch/Configuration_adv.h:658:0,
                 from sketch/Configuration.h:941,
                 from Marlin-RC/Marlin/Marlin.ino:37:
Conditionals.h:517: error: operator '&&' has no right operand
   #define HAS_FAN1 (PIN_EXISTS(FAN1) && CONTROLLERFAN_PIN != FAN1_PIN && EXTRUDER_0_AUTO_FAN_PIN != FAN1_PIN && EXTRUDER_1_AUTO_FAN_PIN != FAN1_PIN && EXTRUDER_2_AUTO_FAN_PIN != FAN1_PIN)
                                                           ^
sketch/Conditionals.h:611:9: note: in expansion of macro 'HAS_FAN1'
   #elif HAS_FAN1
         ^
Conditionals.h:517: error: operator '&&' has no right operand
   #define HAS_FAN1 (PIN_EXISTS(FAN1) && CONTROLLERFAN_PIN != FAN1_PIN && EXTRUDER_0_AUTO_FAN_PIN != FAN1_PIN && EXTRUDER_1_AUTO_FAN_PIN != FAN1_PIN && EXTRUDER_2_AUTO_FAN_PIN != FAN1_PIN)
                                                           ^
sketch/Conditionals.h:623:7: note: in expansion of macro 'HAS_FAN1'
   #if HAS_FAN1
       ^
In file included from sketch/Configuration_adv.h:658:0,
                 from sketch/Configuration.h:941,
                 from Marlin-RC/Marlin/Marlin.ino:37:
Conditionals.h:518: error: operator '&&' has no right operand
   #define HAS_FAN2 (PIN_EXISTS(FAN2) && CONTROLLERFAN_PIN != FAN2_PIN && EXTRUDER_0_AUTO_FAN_PIN != FAN2_PIN && EXTRUDER_1_AUTO_FAN_PIN != FAN2_PIN && EXTRUDER_2_AUTO_FAN_PIN != FAN2_PIN)
                                                           ^
sketch/Conditionals.h:626:7: note: in expansion of macro 'HAS_FAN2'
   #if HAS_FAN2
       ^
In file included from sketch/Configuration.h:42:0,
                 from Marlin-RC/Marlin/Marlin.ino:37:
macros.h:58: error: operator '&&' has no right operand
 #define PIN_EXISTS(PN) (defined(PN ##_PIN) && PN ##_PIN >= 0)
                                                         ^
sketch/Conditionals.h:511:27: note: in expansion of macro 'PIN_EXISTS'
   #define HAS_AUTO_FAN_0 (PIN_EXISTS(EXTRUDER_0_AUTO_FAN))
                           ^
sketch/Conditionals.h:515:25: note: in expansion of macro 'HAS_AUTO_FAN_0'
   #define HAS_AUTO_FAN (HAS_AUTO_FAN_0 || HAS_AUTO_FAN_1 || HAS_AUTO_FAN_2 || HAS_AUTO_FAN_3)
                         ^
sketch/SanityCheck.h:337:5: note: in expansion of macro 'HAS_AUTO_FAN'
 #if HAS_AUTO_FAN
     ^
In file included from sketch/Configuration_adv.h:659:0,
                 from sketch/Configuration.h:941,
                 from Marlin-RC/Marlin/Marlin.ino:37:
SanityCheck.h:351: error: operator '&&' has no right operand
 #if HAS_FAN0 && CONTROLLERFAN_PIN == FAN_PIN
                                   ^
In file included from sketch/Configuration.h:42:0,
                 from Marlin-RC/Marlin/Marlin.ino:37:
macros.h:58: error: operator '&&' has no right operand
 #define PIN_EXISTS(PN) (defined(PN ##_PIN) && PN ##_PIN >= 0)
                                                         ^
sketch/Conditionals.h:519:30: note: in expansion of macro 'PIN_EXISTS'
   #define HAS_CONTROLLERFAN (PIN_EXISTS(CONTROLLERFAN))
                              ^
sketch/SanityCheck.h:355:5: note: in expansion of macro 'HAS_CONTROLLERFAN'
 #if HAS_CONTROLLERFAN
     ^
exit status 1
operator '==' has no right operand

It keeps making reference to the boards.h file, which I haven't touched except to choose my board (GT2560, recognised as board 7: Ultimaker)

bonjour tout le monde

mon imprimante DAVINCI AIO 1.0

j'ai monté une ramp 1.4 arduino 2560 mega suite à un pb de carte electronique (hs)

j'ai installé MARLIN pas de probleme avec les axes tout marche le home aussi

mais mon pb dans REPETIER OU PROMPFACE mon axe Z est 170 alors que j'ai fait les homes idem pour le FIRMWARE REPETIER 0.92

donc quand j'envoie une impression,normal la part vers le bas

je n'arrive pas à mettre mon Z à zero quant je fait le home

je vous remercie pour vos lumieres

salutation bonne soirée:X

hi everybody,

i own a chinese i3 knockoff, namely the Anet A8 which i'm improving in various ways, including replacing the melzi controller with a RAMPS 1.4 on which i put Marlin 1.1.0RC6.

unfortunately, these chinese i3s have a 5 button panel, unlike the classic encoder ones. i managed to get the LCD working, but of course, for the buttons, there needs to be support in Marlin.

some guys over at repetier forums have implemented that so i thought it would be nice to port that code to Marlin, however, despite the fact that i can code, i am completely new to marlin and have no idea where i should put the code to respect the "structure" of the firmware and perhaps send a pull request to get it incorporated into trunk.

so anybody can help?

at this point i'm pretty sure i should add some code to the RAMPS_14.h but there must be other places...

Hello everyone,

I'm working 3D printer and would like to use an external button on my Arduino to pause and resume my print.
Does anyone know how I would do this?

Ideally I would like to pause my print on a specified place with a Gcode command in my print and then afterwards be able to resume the print with a signal from outside my printer.
If anyone has an idea how I would do this, please let me know. I'm also open to alternatives like a pause and resume button or something like that.

Greetings,

Alex

I need some assistance in getting my extruder calibrated. The problem is I am not able to calibrate the extruder. I can manually extrude 100 mm of filament and only 20 or so comes out.

I am building a OB1.4 open beam 3D printer, [www.thingiverse.com]

E3D v6 Hot End Full Kit - 1.75mm Universal (with Bowden add-on) (12v)

E3D Titan 1.75 Titan Extruder W/ Bowden.

Rambo stepper motor controller and Arduino 1.0.6

All my stepper motors are 1.9°

++++++++++++

Titan instructions for the Extruder that i followed:

Because Titan uses a known gearing ratio and a consistently machined drive gear, we can offer a fairly accurate steps / mm set-point.
Steps per Unit (Extruder) = Motor Steps * Micro-stepping * Gear Ratio / (Hobb Diameter * Pi)

Standard motor steps / rev = 200
Standard micro-stepping = 16x
Gear Ratio = 3
Hobb Diameter (Effective) = 6.7
200 * 16 * 3 / (6.7 * 3.142) = 456

To test your value, mark the filament 120mm from the extruder then extrude 100mm slowly. If you do not measure 20mm after extrusion has finished, you may need to tweak this value.


The only thing you will need to update is your steps per mm. For a standard 200 step motor with 16x micro-stepping you will need:
#define DEFAULT_AXIS_STEPS_PER_UNIT {___,___,___,456} ;

++++++++++++

Merlin config.

#define DEFAULT_AXIS_STEPS_PER_UNIT {49,49.3017,60,456} // default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {200, 200, 3, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,100,10000} // 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 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for retracts

The default steps per unit for the extruder that I started with are 456.

++++++++++++


I have tried to manually extrude one hundred millimeters with Pronterface and I have also tried to use G code, G1 E100S95, to extrude one hundred millimeters. Changing the steps per unit from 456 to some other number does not seem to have an effect on what is run. I have no idea whether this is a Pronterface problem or a Marlin config problem. This is the last thing I need to get my printer running, and it's driving me crazy. Please help thanks in advance.

After I changed my extruder, Please see: [forums.reprap.org]
my Z axis homing speed drooped to almost 0.

Marlin config was not changed:

//// MOVEMENT SETTINGS
#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} // set the homing speeds (mm/min)

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT {49,49.3017,60,456} // default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {200, 200, 3, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,1000,10000} // 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 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for retracts

Anyone have a idea what's going on? Thanks

Hello,
I have a Sumpod Aluminium with RAMPS 1.4 and Arduino Mega 2560. When I upload the test script everything works fine: LEDs flashing, axis moving back and forth, hotbed and hotend getting hot. When I install Marlin and I want to try manual movements, only the Z axis moves back and forth while all the others don't respond to commands sent and heater/hotbed don't get hot.
Where do you think there is the problem?

I have been trying to get PID working on my hot bed but every time i run the m303 e-1, i get an error "PID Autotune failed! Bad extruder number"

#define PIDTEMPBED has been enabled I don't know what else I have to do to get it working.

Edit: I have rolled back my firmware to latest stable release and I can get it work. However it doesn't work on RC6

Hi,

I am just finishing my Bigbox printer and wondering how I could enable dual Z stepper drivers with a single Z endstop (IR-sensor) mounted on the X carriage.

I do not understand how the homing works by what it says in Configuration_adv.h on github.

Do I need two endstops or could I use the one on the x carriage?