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🔧 Clarify MMU2/MMU3
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@thinkyhead
thinkyhead committed Oct 3, 2024
1 parent 51bc531 commit ae15ee5
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181 changes: 80 additions & 101 deletions config/default/Configuration_adv.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4428,93 +4428,56 @@
//#define E_MUX0_PIN 40 // Always Required
//#define E_MUX1_PIN 42 // Needed for 3 to 8 inputs
//#define E_MUX2_PIN 44 // Needed for 5 to 8 inputs

#elif HAS_PRUSA_MMU2 || HAS_PRUSA_MMU3
// Common settings for MMU2/MMU2S/MMU3
// Serial port used for communication with MMU2/MMU2S/MMU3.
#define MMU2_SERIAL_PORT 2
#define MMU_SERIAL_PORT 2
#define MMU_BAUD 115200

// Use hardware reset for MMU if a pin is defined for it
//#define MMU2_RST_PIN 23
//#define MMU_RST_PIN 23 // Define this pin to use Hardware Reset for MMU2/MMU2S/MMU3

//#define MMU_MENUS // Add an LCD menu for MMU2/MMU2S/MMU3

//#define MMU_DEBUG // Write debug info to serial output

// Options pertaining to MMU2 and MMU2S
#if HAS_PRUSA_MMU2
// Enable if the MMU2 has 12V stepper motors (MMU2 Firmware 1.0.2 and up)
//#define MMU2_MODE_12V

// Settings for filament load / unload from the LCD menu.
// This is for Průša MK3-style extruders. Customize for your hardware.
#define MMU2_FILAMENTCHANGE_EJECT_FEED 80.0

// G-code to execute when MMU2 F.I.N.D.A. probe detects filament runout
#define MMU2_FILAMENT_RUNOUT_SCRIPT "M600"
#endif

// Add an LCD menu for MMU2/MMU2S/MMU3
//#define MMU_MENUS

// Settings for filament load / unload from the LCD menu.
// This is for Průša MK3-style extruders. Customize for your hardware.
#define MMU2_FILAMENTCHANGE_EJECT_FEED 80.0
// MMU2 sequences use mm/min. Not compatible with MMU3, which use mm/sec.
#define MMU2_LOAD_TO_NOZZLE_SEQUENCE \
{ 4.4, 871 }, \
{ 10.0, 1393 }, \
{ 4.4, 871 }, \
{ 10.0, 198 }

#define MMU2_RAMMING_SEQUENCE \
{ 1.0, 1000 }, \
{ 1.0, 1500 }, \
{ 2.0, 2000 }, \
{ 1.5, 3000 }, \
{ 2.5, 4000 }, \
{ -15.0, 5000 }, \
{ -14.0, 1200 }, \
{ -6.0, 600 }, \
{ 10.0, 700 }, \
{ -10.0, 400 }, \
{ -50.0, 2000 }

#endif // HAS_PRUSA_MMU2

/**
* ------------
* MMU2 / MMU2S
* ------------
* MMU2 sequences use mm/min. Not compatible with MMU3 (see below).
* #define MMU2_LOAD_TO_NOZZLE_SEQUENCE \
* { 4.4, 871 }, \
* { 10.0, 1393 }, \
* { 4.4, 871 }, \
* { 10.0, 198 }
*/

/* #define MMU2_RAMMING_SEQUENCE \
* { 1.0, 1000 }, \
* { 1.0, 1500 }, \
* { 2.0, 2000 }, \
* { 1.5, 3000 }, \
* { 2.5, 4000 }, \
* { -15.0, 5000 }, \
* { -14.0, 1200 }, \
* { -6.0, 600 }, \
* { 10.0, 700 }, \
* { -10.0, 400 }, \
* { -50.0, 2000 }
*/

/**
* ----
* MMU3
* ----
* These values are compatible with MMU3 as they are defined in mm/s
*/

#define MMU2_EXTRUDER_PTFE_LENGTH 42.3 // (mm)
#define MMU2_EXTRUDER_HEATBREAK_LENGTH 17.7 // (mm)

#define MMU2_LOAD_TO_NOZZLE_SEQUENCE \
{ MMU2_EXTRUDER_PTFE_LENGTH, MMM_TO_MMS(810) }, /* (13.5 mm/s) Fast load ahead of heatbreak */ \
{ MMU2_EXTRUDER_HEATBREAK_LENGTH, MMM_TO_MMS(198) } // ( 3.3 mm/s) Slow load after heatbreak

#define MMU2_RAMMING_SEQUENCE \
{ 0.2816, MMM_TO_MMS(1339.0) }, \
{ 0.3051, MMM_TO_MMS(1451.0) }, \
{ 0.3453, MMM_TO_MMS(1642.0) }, \
{ 0.3990, MMM_TO_MMS(1897.0) }, \
{ 0.4761, MMM_TO_MMS(2264.0) }, \
{ 0.5767, MMM_TO_MMS(2742.0) }, \
{ 0.5691, MMM_TO_MMS(3220.0) }, \
{ 0.1081, MMM_TO_MMS(3220.0) }, \
{ 0.7644, MMM_TO_MMS(3635.0) }, \
{ 0.8248, MMM_TO_MMS(3921.0) }, \
{ 0.8483, MMM_TO_MMS(4033.0) }, \
{ -15.0, MMM_TO_MMS(6000.0) }, \
{ -24.5, MMM_TO_MMS(1200.0) }, \
{ -7.0, MMM_TO_MMS( 600.0) }, \
{ -3.5, MMM_TO_MMS( 360.0) }, \
{ 20.0, MMM_TO_MMS( 454.0) }, \
{ -20.0, MMM_TO_MMS( 303.0) }, \
{ -35.0, MMM_TO_MMS(2000.0) }

/**
* Using a sensor like the MMU2S
* This mode requires a MK3S extruder with a sensor at the extruder idler, like the MMU2S.
* Options pertaining to MMU2S devices
* Requires the MK3S extruder with a sensor at the extruder idler, like the MMU2S.
* See https://help.prusa3d.com/guide/3b-mk3s-mk2-5s-extruder-upgrade_41560#42048, step 11
*/
#if HAS_PRUSA_MMU2S
Expand Down Expand Up @@ -4555,14 +4518,9 @@

// MMU3 settings

#define MMU2_MAX_RETRIES 3 // Number of retries (total time = timeout*retries)
#define MMU3_HAS_CUTTER // Enable cutter related functionality

// Nominal distance from the extruder gear to the nozzle tip is 87mm
// However, some slipping may occur and we need separate distances for
// LoadToNozzle and ToolChange.
// - +5mm seemed good for LoadToNozzle,
// - but too much (made blobs) for a ToolChange
#define MMU2_LOAD_TO_NOZZLE_LENGTH 87.0 + 5.0
#define MMU3_MAX_RETRIES 3 // Number of retries (total time = timeout*retries)

// As discussed with our PrusaSlicer profile specialist
// - ToolChange shall not try to push filament into the very tip of the nozzle
Expand All @@ -4571,28 +4529,26 @@
// Beware - this value is used to initialize the MMU logic layer - it will be sent to the MMU upon line up (written into its 8bit register 0x0b)
// However - in the G-code we can get a request to set the extra load distance at runtime to something else (M708 A0xb Xsomething).
// The printer intercepts such a call and sets its extra load distance to match the new value as well.
#define MMU2_FILAMENT_SENSOR_POSITION 0 // (mm)
#define MMU2_LOAD_DISTANCE_PAST_GEARS 5 // (mm)
#define MMU2_TOOL_CHANGE_LOAD_LENGTH MMU2_FILAMENT_SENSOR_POSITION + MMU2_LOAD_DISTANCE_PAST_GEARS // (mm)
#define MMU3_FILAMENT_SENSOR_E_POSITION 0 // (mm)
#define _MMU3_LOAD_DISTANCE_PAST_GEARS 5 // (mm)
#define MMU3_TOOL_CHANGE_LOAD_LENGTH (MMU3_FILAMENT_SENSOR_E_POSITION + _MMU3_LOAD_DISTANCE_PAST_GEARS) // (mm)

#define MMU2_LOAD_TO_NOZZLE_FEED_RATE 20.0 // (mm/s)
#define MMU2_UNLOAD_TO_FINDA_FEED_RATE 120.0 // (mm/s)
#define MMU3_LOAD_TO_NOZZLE_FEED_RATE 20.0 // (mm/s)

#define MMU2_VERIFY_LOAD_TO_NOZZLE_FEED_RATE 50.0 // (mm/s)
#define MMU2_VERIFY_LOAD_TO_NOZZLE_TWEAK -5.0 // (mm) Amount to adjust the length for verifying load-to-nozzle
#define MMU3_VERIFY_LOAD_TO_NOZZLE_FEED_RATE 50.0 // (mm/s)
#define _MMU3_VERIFY_LOAD_TO_NOZZLE_TWEAK -5.0 // (mm) Amount to adjust the length for verifying load-to-nozzle

// The first thing the MMU does is initialize its axis.
// Meanwhile the E-motor will unload 20mm of filament in about 1 second.
#define MMU2_RETRY_UNLOAD_TO_FINDA_LENGTH 80.0 // (mm)
#define MMU2_RETRY_UNLOAD_TO_FINDA_FEED_RATE 80.0 // (mm/s)
#define MMU3_RETRY_UNLOAD_TO_FINDA_LENGTH 80.0 // (mm)
#define MMU3_RETRY_UNLOAD_TO_FINDA_FEED_RATE 80.0 // (mm/s)

// After loading a new filament, the printer will extrude this length of filament
// then retract to the original position. This is used to check if the filament sensor
// reading flickers or filament is jammed.
#define MMU2_CHECK_FILAMENT_PRESENCE_EXTRUSION_LENGTH (MMU2_EXTRUDER_PTFE_LENGTH + MMU2_EXTRUDER_HEATBREAK_LENGTH + MMU2_VERIFY_LOAD_TO_NOZZLE_TWEAK + MMU2_FILAMENT_SENSOR_POSITION) // (mm)

#define MMU_HAS_CUTTER // Enable cutter related functionalities
//#define MMU_FORCE_STEALTH_MODE // Force stealth mode and disable menu item
#define _MMU_EXTRUDER_PTFE_LENGTH 42.3 // (mm)
#define _MMU_EXTRUDER_HEATBREAK_LENGTH 17.7 // (mm)
#define MMU3_CHECK_FILAMENT_PRESENCE_EXTRUSION_LENGTH (_MMU_EXTRUDER_PTFE_LENGTH + _MMU_EXTRUDER_HEATBREAK_LENGTH + MMU3_VERIFY_LOAD_TO_NOZZLE_TWEAK + MMU3_FILAMENT_SENSOR_E_POSITION) // (mm)

/**
* SpoolJoin Consumes All Filament -- EXPERIMENTAL
Expand All @@ -4610,12 +4566,37 @@
* sensor is triggered through the gears) and the end of the PTFE tube and
* can cause filament load issues.
*/
//#define MMU_SPOOL_JOIN_CONSUMES_ALL_FILAMENT

#else
//#define MMU3_SPOOL_JOIN_CONSUMES_ALL_FILAMENT

// MMU3 sequences use mm/sec. Not compatible with MMU2 which use mm/min.
#define MMU3_LOAD_TO_NOZZLE_SEQUENCE \
{ _MMU_EXTRUDER_PTFE_LENGTH, MMM_TO_MMS(810) }, /* (13.5 mm/s) Fast load ahead of heatbreak */ \
{ _MMU_EXTRUDER_HEATBREAK_LENGTH, MMM_TO_MMS(198) } /* ( 3.3 mm/s) Slow load after heatbreak */

#define MMU3_RAMMING_SEQUENCE \
{ 0.2816, MMM_TO_MMS(1339.0) }, \
{ 0.3051, MMM_TO_MMS(1451.0) }, \
{ 0.3453, MMM_TO_MMS(1642.0) }, \
{ 0.3990, MMM_TO_MMS(1897.0) }, \
{ 0.4761, MMM_TO_MMS(2264.0) }, \
{ 0.5767, MMM_TO_MMS(2742.0) }, \
{ 0.5691, MMM_TO_MMS(3220.0) }, \
{ 0.1081, MMM_TO_MMS(3220.0) }, \
{ 0.7644, MMM_TO_MMS(3635.0) }, \
{ 0.8248, MMM_TO_MMS(3921.0) }, \
{ 0.8483, MMM_TO_MMS(4033.0) }, \
{ -15.0, MMM_TO_MMS(6000.0) }, \
{ -24.5, MMM_TO_MMS(1200.0) }, \
{ -7.0, MMM_TO_MMS( 600.0) }, \
{ -3.5, MMM_TO_MMS( 360.0) }, \
{ 20.0, MMM_TO_MMS( 454.0) }, \
{ -20.0, MMM_TO_MMS( 303.0) }, \
{ -35.0, MMM_TO_MMS(2000.0) }

#else // MMU2 (not MMU2S)

/**
* MMU1 Extruder Sensor
* MMU2 Extruder Sensor
*
* Support for a Průša (or other) IR Sensor to detect filament near the extruder
* and make loading more reliable. Suitable for an extruder equipped with a filament
Expand All @@ -4625,15 +4606,13 @@
* move up to the gears. If no filament is detected, the MMU2 can make some more attempts.
* If all attempts fail, a filament runout will be triggered.
*/
//#define MMU_EXTRUDER_SENSOR
#if ENABLED(MMU_EXTRUDER_SENSOR)
#define MMU_LOADING_ATTEMPTS_NR 5 // max. number of attempts to load filament if first load fail
//#define MMU2_EXTRUDER_SENSOR
#if ENABLED(MMU2_EXTRUDER_SENSOR)
#define MMU2_LOADING_ATTEMPTS_NR 5 // Number of times to try loading filament before failure
#endif

#endif

//#define MMU2_DEBUG // Write debug info to serial output

#endif // HAS_PRUSA_MMU2 || HAS_PRUSA_MMU3

/**
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