Building of Mini Kossel 3D Printer – 23

Building of Mini Kossel 3D Printer – 22

Carriage of the linear rail has grease injection port at top and bottom.

General purpose syringe can be used as the grease gun.

I named this Kossel Mini as “Bulbul Junior.” Almost every two or three days I’ve moved around, organize wires to finalize the shape.

I swapped the hot end fan with the board fan. The hot end fan which was plugged in auxiliary pins was running in full speed always. Later on I learned that the Marlin firmware controls only the fans that are connected in assigned pins. I plugged the hot end fan in D9, 12V power output pins and started controlling it by M106 and M107 G code commands.

12V board cooling fan should run all the time to maintain optimum temperature of four stepper drivers. Running the 12V fan at full speed creates a lot of noise. So I connected +5V wire to it from the PSU. I think +5V to +6V is right voltage for the cooling fan.





Calibrating Z height of X, Y, and Z axis.
I did additional calibration following cminow’s method.

Let’s call the three tower locations A, B, and C, and the center D. The script code for each is:

Button Script
A g28 g0 f8000 x-77.94 y-45 z0
B g28 g0 f8000 x77.94 y-45 z0
C g28 g0 f8000 x0 y90 z0
D g28 g0 f8000 x0 y0 z0

(Decoded, g28 homes the printer carriage, g0 is a move to an absolute location, f8000 controls the speed of the move, and x, y, and z are followed by the corresponding coordinates in 3D Cartesian space. The x and y coordinates are points on a circle 90mm from the build surface center and directly in front of each of the three towers.)

Adjusting Z_PROBE_OFFSET values that stores coordinate of the probe.



Photos I took during XY plane verification.

What it does is to make sure that the printer actually print on 170 mm of circular area.
Move to the nozzle four edge positions and measure the distance between the nozzle and center of print bed at (0, 0).
Left most X coordinate is (-85, 0, 0.4). To move the nozzle, execute g x-85, y0, z0.4 or all letters in capital. The nozzle should sit at circumference of the circle whose center is (0, 0), radius 85 mm. If there is more than half millimeter of difference, you need to change DELTA_DIAGONAL_ROD value in Configuration.h file. The other three coordinates are (85, 0, 0.4), (0, -85, 0.4), (0, 85, 0.4).








Marlin firmware’s Configuration.h that I modified during the calibration of my Kossel Mini.


// 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

// 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_VERSION_CONFIG_H __DATE__ " " __TIME__ // build date and time
#define STRING_CONFIG_H_AUTHOR "(jcrocholl, Blomker, hughe, Mini Kossel)" // Who made the changes. ("Blomker" only edited the parametric values in the sketch. Author name is maintain as jcrocholl to indicate source of this sketch, and credit to where it is due)
// I, hughe, made changes for the homemade Mini Kossel

// 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.
#define SERIAL_PORT 0

// 250000 didn't work in Prontface in Debian Wheezy.
// #define BAUDRATE 250000
#define BAUDRATE 115200

//// The following define selects which electronics board you have. Please choose the one that matches your setup
// 10 = Gen7 custom (Alfons3 Version) ""
// 11 = Gen7 v1.1, v1.2 = 11
// 12 = Gen7 v1.3
// 13 = Gen7 v1.4
// 3 = MEGA/RAMPS up to 1.2 = 3
// 33 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Bed)
// 34 = RAMPS 1.3 / 1.4 (Power outputs: Extruder0, Extruder1, Bed)
// 35 = RAMPS 1.3 / 1.4 (Power outputs: Extruder, Fan, Fan)
// 4 = Duemilanove w/ ATMega328P pin assignment
// 5 = Gen6
// 51 = Gen6 deluxe
// 6 = Sanguinololu < 1.2
// 62 = Sanguinololu 1.2 and above
// 63 = Melzi
// 64 = STB V1.1
// 65 = Azteeg X1
// 66 = Melzi with ATmega1284 (MaKr3d version)
// 7 = Ultimaker
// 71 = Ultimaker (Older electronics. Pre 1.5.4. This is rare)
// 77 = 3Drag Controller
// 8 = Teensylu
// 80 = Rumba
// 81 = Printrboard (AT90USB1286)
// 82 = Brainwave (AT90USB646)
// 9 = Gen3+
// 70 = Megatronics
// 701= Megatronics v2.0
// 702= Minitronics v1.0
// 90 = Alpha OMCA board
// 91 = Final OMCA board
// 301 = Rambo
// 21 = Elefu Ra Board (v3)

#define MOTHERBOARD 33

// Define this to set a custom name for your generic Mendel,
// #define CUSTOM_MENDEL_NAME "This Mendel"

// This defines the number of extruders
#define EXTRUDERS 1

//// 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)

#define POWER_SUPPLY 1

//============================== Delta Settings =============================
// Enable DELTA kinematics
#define DELTA

// Make delta curves from many straight lines (linear interpolation).
// This is a trade-off between visible corners (not enough segments)
// and processor overload (too many expensive sqrt calls).

// I measured four critical values of the Kossel Mini.
// Center-to-center distance of the holes in the diagonal push rods.
#define DELTA_DIAGONAL_ROD 215.6 // mm (215)

// Horizontal offset from middle of printer to smooth rod center.
#define DELTA_SMOOTH_ROD_OFFSET 150.0 // mm (137.0)

// Horizontal offset of the universal joints on the end effector.
#define DELTA_EFFECTOR_OFFSET 20.0 // mm (19.9)

// Horizontal offset of the universal joints on the carriages.
#define DELTA_CARRIAGE_OFFSET 19.2 // mm (19.5)
// Effective horizontal distance bridged by diagonal push rods.

// Effective X/Y positions of the three vertical towers.
#define SIN_60 0.8660254037844386
#define COS_60 0.5
#define DELTA_TOWER1_X -SIN_60*DELTA_RADIUS // front left tower
#define DELTA_TOWER2_X SIN_60*DELTA_RADIUS // front right tower
#define DELTA_TOWER3_X 0.0 // back middle tower

// Diagonal rod squared

//=============================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) (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)

// 60 is 100k Maker's Tool Works Kapton Bed Thermister
// 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) (1k pullup)

// My Kossel Mini has only one temperature sensor that came with E3D V6 Hotend kit.
// E3D V6 documentation clearly mentions the type of temeperature sensor.
// So it was piece of cake to set up the temperature sensor.
#define TEMP_SENSOR_0 5
#define TEMP_SENSOR_1 0
#define TEMP_SENSOR_2 0

// 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.

// 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 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 260
#define HEATER_1_MAXTEMP 260
#define HEATER_2_MAXTEMP 260
#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

// PID settings:
// 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 255 // limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
#ifdef 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 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 255 //limit for the integral term
#define K1 0.95 //smoothing factor within the PID
#define PID_dT ((16.0 * 8.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
// If you are using a preconfigured hotend then you can use one of the value sets by uncommenting it

// I uncommented it for the temperature sensor.
// T3P3 1.75mm E3D V6 with Semitec
#define DEFAULT_Kp 21.28
#define DEFAULT_Ki 2.37
#define DEFAULT_Kd 47.76

// 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

// 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 above 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

// 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

//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

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

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

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

// Uncomment the following line to enable CoreXY kinematics
// #define COREXY

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

// fine Enstop settings: Individual Pullups. will be ignored if ENDSTOPPULLUPS is defined



// The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
const bool Y_MIN_ENDSTOP_INVERTING = false; // 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 = false; // set to true to invert the logic of the endstop.
const bool Y_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
const bool Z_MAX_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.

// Disable max endstops for compatibility with endstop checking routine
#if defined(COREXY) && !defined(DISABLE_MAX_ENDSTOPS)

// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
#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.
#define DISABLE_X false
#define DISABLE_Y false
#define DISABLE_Z false
#define DISABLE_E false // For all extruders

// TP3D values are all false
#define INVERT_X_DIR true // for Mendel set to false, for Orca set to true
#define INVERT_Y_DIR true // for Mendel set to true, for Orca set to false
#define INVERT_Z_DIR true // for Mendel set to false, for Orca set to true
#define INVERT_E0_DIR true // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E1_DIR true // for direct drive extruder v9 set to true, for geared extruder set to false
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR 1
#define Y_HOME_DIR 1
#define Z_HOME_DIR 1

// According to Kossel_Mini_Assembly_Guide_V1.0.pdf the home coordinate (0, 0, Zmax), center of bed (0, 0, 0) are the first two critical calibrations. Zmax dictates build height of printing object, (0, 0, 0) is center point of the print bed. And it's 0.1 mm off the print bed (0, 0, 0.1). So when the center of bed is properly calibrated, the nozzle slight drag a sheet paper not touching the print bed.
// Before proceeding this calibration, you must check the Z height in this file and make sure its value is not bigger than the distance between print bed and nozzle at home position. For instance, the value of Z height was 239. And real Z height of my 3D Printer is 207. When I executed G1 Z10, the nozzle crashed into the aluminium bed violently because it thought the bed existed 19 mm further down. If the print bed was thin glass, it would break it.
#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS.
// #define min_software_endstops true
#define max_software_endstops true // If true, axis won't move to coordinates greater than the defined lengths below.

// Kossel Mini's printing area is circle. 85 is radius of the circle. For example, if your Kossel Mini has 200 mm of diameter, use 100 instead of 85.

// Travel limits after homing
#define X_MAX_POS 85
#define X_MIN_POS -85
#define Y_MAX_POS 85
#define Y_MIN_POS -85
#define Z_MIN_POS 0


// 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.

// I performed four calibrations to derive the final value, 207.60.
// 1st calibration value was 32.80
// 239 - 32.80
// 206.20 - (-1.40)
// 207.60 - 0.10
#define MANUAL_Z_HOME_POS 207.50 // For delta: Distance between nozzle and print surface after homing.

#define AUTOLEVEL_GRID 26 // 26 Distance between autolevel Z probing points, should be less than print surface radius/3.

#define AUTOLEVEL_GRID 26 // 26 Distance between autolevel Z probing points, should be less than print surface radius/3.

#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
#define HOMING_FEEDRATE {80*60, 80*60, 80*60, 0} // set the homing speeds (mm/min)

// To get this values
// I ran G x0 y0 z10 command.
// Then, deployed the metal probe and moved the probe position to (0, 0, z10) by Prontface's nozzle movement buttons. Occasionally executing M114 shows the nozzle position. When the probe is at the center, put a paper and gradually bring down the nozzle until the probe tip touches the paper. Writing down the final coordinate for Z_PROBE_OFFSET.
// My reading was (-13, 3, 6.90). It tells the probe is 13 mm to the right, 3 mm rear side of the nozzle. 6.90 is the probe distance that it travel before it hits the bed and release end stop switch, which triggers ending of one probe.
#define Z_PROBE_OFFSET {13, -3, -6.9, 0}
// #define Z_PROBE_OFFSET {0, 14, -6.7, 0} // (0, 14, -6.5, 0) X, Y, Z, E distance between hotend nozzle and deployed bed leveling probe.(0,19,-8,0)

// default settings
// I checked receipts and data sheet of all the parts to gather necessary information.
// Motor Steps per Revolution / Idler Teeth / Belt Pitch
// 16T pulleys, 1.8 degree, 1/16 microstep, GT2 belt pitch 2mm,
// for Kysan NEMA 17 step motor
// (360.0 / 1.8) / (1/16) / 16.0 / 2.0 = 100.0
// 5.18 geared stepper motor, 1.8 degree, 1/16 microstep
// Motor Steps per Revolution * Gear Ratio / (hobbed gear Diameter * Pi)
// Hobbed gear: 8mm bore, 12.7mm OD, 11.4mm hobbed diameter
// steps per unit = (360.0 / 1.8) / (1/16) * 5.18 / (11.4 * Pi)
// 463 ( REMEMBER TO INSTALL U8glib to your ARDUINO library folder:

// The RepRapWorld REPRAPWORLD_KEYPAD v1.1
//#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
// REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARUDINO library folder:

//automatic expansion
#if defined (MAKRPANEL)
#define DOGLCD
#define NEWPANEL

#define DOGLCD
#define U8GLIB_ST7920

#define NEWPANEL

#define NEWPANEL
#if defined(RA_CONTROL_PANEL)
#define NEWPANEL
#define LCD_I2C_TYPE_PCA8574
#define LCD_I2C_ADDRESS 0x27 // I2C Address of the port expander


// This uses the LiquidCrystal_I2C library ( )
// Make sure it is placed in the Arduino libraries directory.
#define LCD_I2C_TYPE_PCF8575
#define LCD_I2C_ADDRESS 0x27 // I2C Address of the port expander
#define NEWPANEL

// PANELOLU2 LCD with status LEDs, separate encoder and click inputs
//#define LCD_I2C_PANELOLU2
// This uses the LiquidTWI2 library v1.2.3 or later ( )
// 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_TYPE_MCP23017
#define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
#define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
#define NEWPANEL
// Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
//#define LCD_I2C_VIKI
#ifdef LCD_I2C_VIKI
// This uses the LiquidTWI2 library v1.2.3 or later ( )
// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
// Note: The pause/stop/resume LCD button pin should be connected to the Arduino
// BTN_ENC pin (or set BTN_ENC to -1 if not used)
#define LCD_I2C_TYPE_MCP23017
#define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
#define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
#define NEWPANEL

// #define NEWPANEL //enable this if you have a click-encoder panel
#define ULTRA_LCD
#ifdef DOGLCD // Change number of lines to match the DOG graphic display
#define LCD_WIDTH 20
#define LCD_HEIGHT 5
#define LCD_WIDTH 20
#define LCD_HEIGHT 4
#else //no panel but just lcd
#ifdef ULTRA_LCD
#ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
#define LCD_WIDTH 20
#define LCD_HEIGHT 5
#define LCD_WIDTH 16
#define LCD_HEIGHT 2

// default LCD contrast for dogm-like LCD displays
#ifdef DOGLCD
# endif

// 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 ass 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

// M240 Triggers a camera by emulating a Canon RC-1 Remote
// Data from:
// #define PHOTOGRAPH_PIN 23
// SF send wrong arc g-codes when using Arc Point as fillet procedure
//#define SF_ARC_FIX

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

* 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 // 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 M206 command to correct for switch height offset to actual nozzle height. Store that setting with M500.
//#define SERVO_ENDSTOPS {-1, -1, 0} // Servo index for X, Y, Z. Disable with -1
//#define SERVO_ENDSTOP_ANGLES {0,0, 0,0, 70,0} // X,Y,Z Axis Extend and Retract angles

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


About janpenguin

Email: janpenguin [at] riseup [dot] net Every content on the blog is made by Free and Open Source Software in GNU/Linux.
This entry was posted in DIY, Reprap 3D Printer and tagged , . Bookmark the permalink.

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