My first bunt motor stepper controller.
Posted by klakierka
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Re: My first bunt motor stepper controller. February 13, 2014 01:55PM |
Thanks for you for your help.
Seems that either I made short circuit or controller was damaged from the beginning.
I got new one and everything works perfectly.
But I am not sure how I should calibrate z axes in the code.
We are using two motors NEMA17 with step angle of 1.8 ° = 200
A4988 Stepper Motor Driver - 1/16 =16
and two thread_pitch with distance betwen pitch 2mm = 2
so according to this formula:
steps_per_mm = (motor_steps_per_rev * driver_microstep) / thread_pitch
(200*16)/ 2 = 1800
but it doesn't work with this settings
Am I doing something wrong ? or should I change something else in the settings below ??
//// Calibration variables
// X, Y, Z, E steps per unit - Metric Prusa Mendel with Wade extruder:
#define _AXIS_STEP_PER_UNIT {80, 80, 3200/2,700}
// Metric Prusa Mendel with Makergear geared stepper extruder:
//#define _AXIS_STEP_PER_UNIT {80,80,3200/1.25,1380}
// MakerGear Hybrid Prusa Mendel:
// Z axis value is for .9 stepper(if you have 1.8 steppers for Z, you need to use 2272.7272)
//#define _AXIS_STEP_PER_UNIT {104.987, 104.987, 4545.4544, 1487}
const int NUM_AXIS = 4; // The axis order in all axis related arrays is X, Y, Z, E
#define _MAX_FEEDRATE {400, 400, 2, 45} // (mm/sec)
#define _HOMING_FEEDRATE {1500,1500,120} // (mm/min) !!
#define _AXIS_RELATIVE_MODES {false, false, false, false}
//-----------------------------------------------------------------------
//// Acceleration settings
//-----------------------------------------------------------------------
// 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 _ACCELERATION 1000 // Axis Normal acceleration mm/s^2
#define _RETRACT_ACCELERATION 2000 // Extruder Normal acceleration mm/s^2
#define _MAX_XY_JERK 20.0
#define _MAX_Z_JERK 0.4
#define _MAX_E_JERK 5.0 // (mm/sec)
//#define _MAX_START_SPEED_UNITS_PER_SECOND {25.0,25.0,0.2,10.0}
#define _MAX_ACCELERATION_UNITS_PER_SQ_SECOND {5000,5000,50,5000}
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