andrey
/
Marlin_FB4S
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Add option to fix E/D ratio 

Work around for slicers producing buggy gcode.
pull/1/head
Sebastianv650 8 years ago
committed by Scott Lahteine
parent
eeb490221f
commit
de6c40ed8f
20 changed files with 474 additions and 15 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 25
      Marlin/Configuration_adv.h
  2. 36
      Marlin/Marlin_main.cpp
  3. 25
      Marlin/example_configurations/Cartesio/Configuration_adv.h
  4. 25
      Marlin/example_configurations/Felix/Configuration_adv.h
  5. 25
      Marlin/example_configurations/Hephestos/Configuration_adv.h
  6. 25
      Marlin/example_configurations/Hephestos_2/Configuration_adv.h
  7. 25
      Marlin/example_configurations/K8200/Configuration_adv.h
  8. 25
      Marlin/example_configurations/K8400/Configuration_adv.h
  9. 25
      Marlin/example_configurations/RigidBot/Configuration_adv.h
  10. 25
      Marlin/example_configurations/SCARA/Configuration_adv.h
  11. 25
      Marlin/example_configurations/TAZ4/Configuration_adv.h
  12. 25
      Marlin/example_configurations/WITBOX/Configuration_adv.h
  13. 25
      Marlin/example_configurations/delta/generic/Configuration_adv.h
  14. 25
      Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
  15. 25
      Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
  16. 25
      Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
  17. 25
      Marlin/example_configurations/makibox/Configuration_adv.h
  18. 25
      Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
  19. 21
      Marlin/planner.cpp
  20. 5
      Marlin/planner.h

25
Marlin/Configuration_adv.h
View File

@ -592,6 +592,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

36
Marlin/Marlin_main.cpp
View File

@ -7601,7 +7601,41 @@ inline void gcode_M503() {
*/
inline void gcode_M905() {
stepper.synchronize();
planner.advance_M905(code_seen('K') ? code_value_float() : -1.0);
float newD = -1;
float newW = -1;
float newH = -1;
if (code_seen('K')) {
float newK = code_value_float();
if (newK >= 0.0)
planner.set_extruder_advance_k(newK);
}
SERIAL_ECHO_START;
SERIAL_ECHOPAIR("Advance factor: ", planner.get_extruder_advance_k());
SERIAL_EOL;
if (code_seen('D'))
newD = code_value_float();
if (code_seen('W'))
newW = code_value_float();
if (code_seen('H'))
newH = code_value_float();
if (newD > 0 && newW > 0 && newH > 0) {
float E_D_ratio = newW * newH / (sq(newD / 2) * M_PI);
planner.set_E_D_ratio(E_D_ratio);
SERIAL_ECHO_START;
SERIAL_ECHOPAIR("E/D ratio: ", E_D_ratio);
SERIAL_EOL;
}
else if (newD != -1 || newW != -1 || newH != -1) {
planner.set_E_D_ratio(0);
SERIAL_ECHO_START;
SERIAL_ECHOPGM("E/D ratio: Automatic");
SERIAL_EOL;
}
}
#endif

25
Marlin/example_configurations/Cartesio/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/Felix/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/Hephestos/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/Hephestos_2/Configuration_adv.h
View File

@ -572,6 +572,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/K8200/Configuration_adv.h
View File

@ -602,6 +602,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 140 // start value for PLA on K8200
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/K8400/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/RigidBot/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/SCARA/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/TAZ4/Configuration_adv.h
View File

@ -597,6 +597,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/WITBOX/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/delta/generic/Configuration_adv.h
View File

@ -591,6 +591,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
View File

@ -591,6 +591,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
View File

@ -596,6 +596,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
View File

@ -591,6 +591,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/makibox/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

25
Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
View File

@ -589,6 +589,31 @@
#if ENABLED(LIN_ADVANCE)
#define LIN_ADVANCE_K 75
/**
* Some Slicers produce Gcode with randomly jumping extrusion widths occasionally.
* For example within a 0.4mm perimeter it may produce a single segment of 0.05mm width.
* While this is harmless for normal printing (the fluid nature of the filament will
* close this very, very tiny gap), it throws off the LIN_ADVANCE pressure adaption.
*
* For this case LIN_ADVANCE_E_D_RATIO can be used to set the extrusion:distance ratio
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
* This option sets the default E:D ratio at startup. Use `M905` to override this value.
*
* Example: `M905 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
* Cura (as of this writing) may produce Gcode incompatible with the automatic mode.
*/
#define LIN_ADVANCE_E_D_RATIO 0 // The calculated ratio (or 0) according to the formula W * H / ((D / 2) ^ 2 * PI)
// Example: 0.4 * 0.2 / ((1.75 / 2) ^ 2 * PI) = 0.033260135
#endif
// @section leveling

21
Marlin/planner.cpp
View File

@ -142,6 +142,7 @@ float Planner::previous_speed[NUM_AXIS],
#if ENABLED(LIN_ADVANCE)
float Planner::extruder_advance_k = LIN_ADVANCE_K,
Planner::E_D_ratio = LIN_ADVANCE_E_D_RATIO,
Planner::position_float[NUM_AXIS] = { 0 };
#endif
@ -1323,8 +1324,15 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
&& extruder_advance_k
&& (uint32_t)esteps != block->step_event_count
&& de_float > 0.0;
if (block->use_advance_lead)
if (block->use_advance_lead) {
// Check if we should use the fixed E_D_ratio
if (UNEAR_ZERO(E_D_ratio)) {
block->abs_adv_steps_multiplier8 = lround(extruder_advance_k * (de_float / mm_D_float) * block->nominal_speed / (float)block->nominal_rate * axis_steps_per_mm[E_AXIS_N] * 256.0);
}
else {
block->abs_adv_steps_multiplier8 = lround(extruder_advance_k * E_D_ratio * block->nominal_speed / (float)block->nominal_rate * axis_steps_per_mm[E_AXIS_N] * 256.0);
}
}
#elif ENABLED(ADVANCE)
@ -1478,14 +1486,3 @@ void Planner::refresh_positioning() {
}
#endif
#if ENABLED(LIN_ADVANCE)
void Planner::advance_M905(const float &k) {
if (k >= 0.0) extruder_advance_k = k;
SERIAL_ECHO_START;
SERIAL_ECHOPAIR("Advance factor: ", extruder_advance_k);
SERIAL_EOL;
}
#endif

5
Marlin/planner.h
View File

@ -210,6 +210,7 @@ class Planner {
#if ENABLED(LIN_ADVANCE)
static float position_float[NUM_AXIS];
static float extruder_advance_k;
static float E_D_ratio;
#endif
#if ENABLED(ULTRA_LCD)
@ -266,7 +267,9 @@ class Planner {
#endif
#if ENABLED(LIN_ADVANCE)
void advance_M905(const float &k);
static void set_extruder_advance_k(const float &k) { extruder_advance_k = k; };
static float get_extruder_advance_k() { return extruder_advance_k; };
static void set_E_D_ratio(const float &ratio) { E_D_ratio = ratio; };
#endif
/**

Write Preview
Loading…
Cancel
Save