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Loosen E on pause for fila-manipulation (MarlinFirmware#20346)
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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
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thebelin and thinkyhead committed Apr 29, 2021
1 parent 51fed0a commit c4a9fc9
Showing 1 changed file with 17 additions and 5 deletions.
22 changes: 17 additions & 5 deletions Marlin/src/feature/pause.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,18 @@ bool load_filament(const float &slow_load_length/*=0*/, const float &fast_load_l
return true;
}

/**
* Disabling E steppers for manual filament change should be fine
* as long as users don't spin the E motor ridiculously fast and
* send current back to their board, potentially frying it.
*/
inline void disable_active_extruder() {
#if HAS_E_STEPPER_ENABLE
disable_e_stepper(active_extruder);
safe_delay(100);
#endif
}

/**
* Unload filament from the hotend
*
Expand Down Expand Up @@ -355,11 +367,8 @@ bool unload_filament(const float &unload_length, const bool show_lcd/*=false*/,
planner.settings.retract_acceleration = saved_acceleration;
#endif

// Disable E steppers for manual change
#if HAS_E_STEPPER_ENABLE
disable_e_stepper(active_extruder);
safe_delay(100);
#endif
// Disable the Extruder for manual change
disable_active_extruder();

return true;
}
Expand Down Expand Up @@ -445,6 +454,9 @@ bool pause_print(const float &retract, const xyz_pos_t &park_point, const float
set_duplication_enabled(saved_ext_dup_mode, saved_ext);
#endif

// Disable the Extruder for manual change
disable_active_extruder();

return true;
}

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