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  • LieneV commented on SteveRoy's instructable Building a Prusa i3 3D Printer2 years ago
    Building a  Prusa i3 3D Printer

    Hi!We are 5 students from Belgium and trying to print with the Prusa I3 Steel but when we start, the printer starts printing in the air because the Z-axis won't go to the heating bed. It is not a problem with the Z-axis itself because it is able to move when we steer it with pronterface. Our endstop of the Z-axis is on the top so in the software we set that the home position is our maximum position. Hopefully somebody can help us! This are our settings in the software: // 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...

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    Hi!We are 5 students from Belgium and trying to print with the Prusa I3 Steel but when we start, the printer starts printing in the air because the Z-axis won't go to the heating bed. It is not a problem with the Z-axis itself because it is able to move when we steer it with pronterface. Our endstop of the Z-axis is on the top so in the software we set that the home position is our maximum position. Hopefully somebody can help us! This are our settings in the software: // 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 = true; // set to true to invert the logic of the endstops.const bool Y_ENDSTOPS_INVERTING = true; // set to true to invert the logic of the endstops.const bool Z_ENDSTOPS_INVERTING = true; // 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 true#define DISABLE_E false // For all extruders#define INVERT_X_DIR false // for Mendel set to false, for Orca set to true#define INVERT_Y_DIR false // for Mendel set to true, for Orca set to false#define INVERT_Z_DIR false // for Mendel set to false, for Orca 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 1#define min_software_endstops false //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 190#define X_MIN_POS 0#define Y_MAX_POS 290#define Y_MIN_POS 0#define Z_MAX_POS 0#define Z_MIN_POS 18.1 #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_MIN_POS - Z_MAX_POS)// 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:#define MANUAL_X_HOME_POS -100#define MANUAL_Y_HOME_POS -140#define MANUAL_Z_HOME_POS 0//// MOVEMENT SETTINGS#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E#define HOMING_FEEDRATE {2000, 2000, 100, 0} // set the homing speeds (mm/min) [50*60,50*60, 4*60, 0]// default settings#define DEFAULT_AXIS_STEPS_PER_UNIT {160,160,8000,1554} // default steps per unit for ultimaker#define DEFAULT_MAX_FEEDRATE {250, 250, 3.3, 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. //(9000,9000,100,10000)#define DEFAULT_ACCELERATION 1000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves [3000]#define DEFAULT_RETRACT_ACCELERATION 1000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts [3000]// 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 speed change that does not require acceleration (i.e. the software might assume it can be done instanteneously)#define DEFAULT_XYJERK 20 // (mm/sec) [20.0]#define DEFAULT_ZJERK 0.4 // (mm/sec)#define DEFAULT_EJERK 5.0 // (mm/sec) [5.0]

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