Homing issues

[florent]

Hi everybody,

I start this topic because I’m having some homing problems. I have some opto endstops, so I changed the ?_ENDSTOPS_INVERTING to false, and at the end when I connect my reprap in pronterface and type M 119 to test my endstops, it all goes well ( triggered when I place manually the arms in the home position, open if not).
Then, when I try to home my reprap (pressing home on pronterface or typing G 28), the arms start moving together (like they should, I guess, according to Quentin homing procedure) but then they pass easily the endstops and continue their way up to the mechanical limits of the reprap. At this point I have to press my emergency stop button so that they don’t force on the belt.

What can I try ? I post to you my mechanical part of the settings :

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

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

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

#ifndef ENDSTOPPULLUPS
// fine Enstop settings: Individual Pullups. will be ignord if ENDSTOPPULLUPS is defined
#define ENDSTOPPULLUP_XMAX
#define ENDSTOPPULLUP_YMAX
#define ENDSTOPPULLUP_ZMAX
#define ENDSTOPPULLUP_XMIN
#define ENDSTOPPULLUP_YMIN
//#define ENDSTOPPULLUP_ZMIN
#endif

#ifdef ENDSTOPPULLUPS
#define ENDSTOPPULLUP_XMAX
#define ENDSTOPPULLUP_YMAX
#define ENDSTOPPULLUP_ZMAX
#define ENDSTOPPULLUP_XMIN
#define ENDSTOPPULLUP_YMIN
#define ENDSTOPPULLUP_ZMIN
#endif

// The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
const bool X_ENDSTOPS_INVERTING = false; // set to true to invert the logic of the endstops.
const bool Y_ENDSTOPS_INVERTING = false; // set to true to invert the logic of the endstops.
const bool Z_ENDSTOPS_INVERTING = false; // set to true to invert the logic of the endstops.
#define 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

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

// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR 0 // Bed home to top (0)

#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.
// Travel limits after homing
#define X_MAX_POS 200
#define X_MIN_POS 0
#define Y_MAX_POS 200
#define Y_MIN_POS 0
#define Z_MAX_POS MANUAL_Z_HOME_POS
#define Z_MIN_POS -10

#define X_MAX_LENGTH (X_MAX_POS – X_MIN_POS)
#define Y_MAX_LENGTH (Y_MAX_POS – Y_MIN_POS)
#define Z_MAX_LENGTH (Z_MAX_POS – Z_MIN_POS)

#define X_ARMLOOKUP_LENGTH (X_MAX_LENGTH / 20) + 1 // Maximum grid size: 2cm intervals (11 points per side for 200×200)
#define Y_ARMLOOKUP_LENGTH (Y_MAX_LENGTH / 20) + 1

// 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.
// Scara: x centered, y 0
#define MANUAL_X_HOME_POS -35
#define MANUAL_Y_HOME_POS -60
#define MANUAL_Z_HOME_POS 235 // 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 {20*3, 20*3, 20*3, 0} // set the homing speeds (mm/min)
//#define QUICK_HOMING_FEEDRATE 20*60

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT {215, 215, 100, 450}
#define DEFAULT_MAX_FEEDRATE {300, 300, 300, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {400, 400, 400, 8000} // X, Y, Z, E maximum start speed for accelerated moves.

#define DEFAULT_ACCELERATION 9000 // 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 r retracts

//
#define DEFAULT_XYJERK 10.0 // (mm/sec)
#define DEFAULT_ZJERK 10.0 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)

And this is also a part in pins.h that I changed,

// uncomment one of the following lines for RAMPS v1.3 or v1.0, comment both for v1.2 or 1.1
#define RAMPS_V_1_3
// #define RAMPS_V_1_0

I uncommented #define RAMPS_V_1_3 because I have a ramps 1.4 and that’s the closest board I could think of.

If anybody would like to give an eye on it, especially those with their morgan aalredy working, that would be great. It’s been two days that I can’t figure out what the problem is 🙁

Thanks again, Quentin and all the rest that have helped me til now !

Bye !

Florent

#if MOTHERBOARD == 33 || MOTHERBOARD == 34

[Quentin Harley]

Change the endstop settings to the following:

// ENDSTOP SETTINGS:
// 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 // Bed home to top (0)

Also ensure that if your hardware has inputs for both min and max endstops, you use the MAX inputs.

This will surely solve the problems.

[florent]

Okay that fixed it ! 😀 Thanks a lot !

[Author]

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