#ifndef config_h#define config_h// IMPORTANT: Any changes here requires a full re-compiling of the source code to propagate them.#define BAUD_RATE 9600// Updated default pin-assignments from 0.6 onwards // (see bottom of file for a copy of the old config)#define STEPPERS_DISABLE_DDR DDRB#define STEPPERS_DISABLE_PORT PORTB#define STEPPERS_DISABLE_BIT 0#define STEPPING_DDR DDRD#define STEPPING_PORT PORTD#define X_STEP_BIT 2#define Y_STEP_BIT 3#define Z_STEP_BIT 4#define X_DIRECTION_BIT 5#define Y_DIRECTION_BIT 6#define Z_DIRECTION_BIT 7#define LIMIT_DDR DDRB#define LIMIT_PIN PINB#define X_LIMIT_BIT 1#define Y_LIMIT_BIT 2#define Z_LIMIT_BIT 3#define SPINDLE_ENABLE_DDR DDRB#define SPINDLE_ENABLE_PORT PORTB#define SPINDLE_ENABLE_BIT 4#define SPINDLE_DIRECTION_DDR DDRB#define SPINDLE_DIRECTION_PORT PORTB#define SPINDLE_DIRECTION_BIT 5// This parameter sets the delay time before disabling the steppers after the final block of movement.// A short delay ensures the steppers come to a complete stop and the residual inertial force in the // CNC axes don't cause the axes to drift off position. This is particularly important when manually // entering g-code into grbl, i.e. locating part zero or simple manual machining. If the axes drift,// grbl has no way to know this has happened, since stepper motors are open-loop control. Depending// on the machine, this parameter may need to be larger or smaller than the default time.// NOTE: If defined 0, the delay will not be compiled.#define STEPPER_IDLE_LOCK_TIME 25 // (milliseconds) - Integer >= 0// The temporal resolution of the acceleration management subsystem. Higher number give smoother// acceleration but may impact performance.// NOTE: Increasing this parameter will help any resolution related issues, especially with machines // requiring very high accelerations and/or very fast feedrates. In general, this will reduce the // error between how the planner plans the motions and how the stepper program actually performs them.// However, at some point, the resolution can be high enough, where the errors related to numerical // round-off can be great enough to cause problems and/or it's too fast for the Arduino. The correct// value for this parameter is machine dependent, so it's advised to set this only as high as needed.// Approximate successful values can range from 30L to 100L or more.#define ACCELERATION_TICKS_PER_SECOND 50L// Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end// of the buffer and all stops. This should not be much greater than zero and should only be changed// if unwanted behavior is observed on a user's machine when running at very slow speeds.#define MINIMUM_PLANNER_SPEED 0.0 // (mm/min)// Minimum stepper rate. Sets the absolute minimum stepper rate in the stepper program and never runs// slower than this value, except when sleeping. This parameter overrides the minimum planner speed.// This is primarily used to guarantee that the end of a movement is always reached and not stop to// never reach its target. This parameter should always be greater than zero.#define MINIMUM_STEPS_PER_MINUTE 800 // (steps/min) - Integer value only// Number of arc generation iterations by small angle approximation before exact arc trajectory // correction. This parameter maybe decreased if there are issues with the accuracy of the arc// generations. In general, the default value is more than enough for the intended CNC applications// of grbl, and should be on the order or greater than the size of the buffer to help with the // computational efficiency of generating arcs.#define N_ARC_CORRECTION 25 // Integer (1-255)#endif
$0 = 755.906 (steps/mm x)$1 = 755.906 (steps/mm y)$2 = 755.906 (steps/mm z)$3 = 10 (microseconds step pulse)$4 = 500.000 (mm/min default feed rate)$5 = 500.000 (mm/min default seek rate)$6 = 0.100 (mm/arc segment)$7 = 28 (step port invert mask. binary = 11100)$8 = 50.000 (acceleration in mm/sec^2)$9 = 0.050 (cornering junction deviation in mm)'$x=value' to set parameter or just '$' to dump current settings
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