I truly hope this is the correct place.
I was given an old bfb3000 to play with as my Partner knows how I enjoy bringing dead things back to usefulness. Its old Control board is gone, replaced by ramps 1.4. It also has a v6 clone hotend. Ive been chewing my novice way through the firmware and have got pretty close to happy with it all apart from 1 issue. When I home it ,it never returns to the home position and the nozzles is always touching the bed.
The hotend is also my z probe , my probe offset M581 is 0,0,0 and I use z_Safe_homing. My homing calibration points are x0, y-30 , z2 but the head always stays at x120 y120 z0, I have told it that max x is 280 max y is 250 and to home to x0 y0 z2. I most likley doing somthing wrong and any help would be massivley appreciatet. I can never ever get good first layer out of it but it can print a fantastic spiral vase. Lol
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Enable this option for a probe connected to the Z-MIN pin.
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The probe replaces the Z-MIN endstop and is used for Z homing.
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(Automatically enables USE_PROBE_FOR_Z_HOMING.)
*/
#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
// Force the use of the probe for Z-axis homing
#define USE_PROBE_FOR_Z_HOMING
// Specify here all the endstop connectors that are connected to any endstop or probe.
// Almost all printers will be using one per axis. Probes will use one or more of the
// extra connectors. Leave undefined any used for non-endstop and non-probe purposes.
#define USE_XMIN_PLUG
#define USE_YMIN_PLUG
#define USE_ZMIN_PLUG
// Mechanical endstop with COM to ground and NC to Signal uses “false” here (most common setup).
#define X_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
#define Y_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
#define Z_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
#define Z_MIN_PROBE_ENDSTOP_INVERTING true // Set to true to invert the logic of the probe.
#define NOZZLE_TO_PROBE_OFFSET { 0, 0, 0 }
// Travel limits (linear=mm, rotational=°) after homing, corresponding to endstop positions.
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 2
#define X_MAX_POS 280
#define Y_MAX_POS 250
#define Z_MAX_POS 190
// Manually set the home position. Leave these undefined for automatic settings.
// For DELTA this is the top-center of the Cartesian print volume.
#define MANUAL_X_HOME_POS 0
#define MANUAL_Y_HOME_POS -30
/**
- Use “Z Safe Homing” to avoid homing with a Z probe outside the bed area.
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- Moves the Z probe (or nozzle) to a defined XY point before Z homing.
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- Allows Z homing only when XY positions are known and trusted.
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- If stepper drivers sleep, XY homing may be required again before Z homing.
*/
#define Z_SAFE_HOMING
- If stepper drivers sleep, XY homing may be required again before Z homing.
#if ENABLED(Z_SAFE_HOMING)
#define Z_SAFE_HOMING_X_POINT 120 // X point for Z homing
#define Z_SAFE_HOMING_Y_POINT 120 // Y point for Z homing
#endif
// Homing speeds (linear=mm/min, rotational=°/min)
#define HOMING_FEEDRATE_MM_M { (4060), (4060), (6*60) }
// Validate that endstops are triggered on homing moves
#define VALIDATE_HOMING_ENDSTOPS
I hope this can shed some light as I am lost.
All th e best to you all
Dom2210