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versioning, small wording updates
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TheZeroBeast authored Nov 21, 2018
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# MM-control-01
MMU 3-axis stepper control

## Below are the stable versions of MMU2 & MK3 FW required and a link to releases of latest compiled hex files.
MMU: V#: 2.1.4 B#: 210
## Latest stable versions & link to **RELEASES** for Precompiled HEX files

MK3: V#: 5.0.3 B#: 2235
**MMU: V#: 2.1.4 B#: 222**

https://github.com/TheZeroBeast/MM-control-01/releases
**MK3: V#: 5.0.3 B#: 2244**

**https://github.com/TheZeroBeast/MM-control-01/releases**

# POINTS OF NOTE
* You DO NOT have to reset to factory settings, all the same EEPROM data structures are used as STOCK-PRUSA-FW
* Bowden Length is still important as load is optimised to minimise the posibility of
grinding in the event of the MK3-FSensor not triggering, rare if setup correct,
dust/particles still build up over time. #DEFAULT FACTORY BOWDEN LENGETH IS 350mm#
Adjust value BOWDEN_LENGTH, line 31 in file MOTION.CPP if custom value desired
* Distance to BONDTECH is set for factory R3 extruder configuration
Adjust value STEPS_MK3FSensor_To_Bondtech, line 32 in file MOTION.CPP if custom value desired
* Ensure filament sensor is enalbed via MK3 menu the first time you flash your MK3 to ensure your MMU2 gets messages when filament gets to the MK3.
* You **DO NOT** have to reset to factory settings, all the same EEPROM data structures are used as STOCK-PRUSA-FW
* Bowden Length is still important as load is optimised to minimise the posibility of
grinding in the event of the MK3-FSensor not triggering, rare if setup correct,
dust/particles still build up over time. **DEFAULT FACTORY BOWDEN LENGETH IS 350mm**
* Adjust value **BOWDEN_LENGTH**, line 31 in file MOTION.CPP if custom value desired.
On load there is a 5s window after you here deceleration finish, adjust value so it triggers 1-2s into this window
* Distance to BONDTECH is set for factory R3 extruder configuration
* Adjust value **STEPS_MK3FSensor_To_Bondtech**, line 32 in file MOTION.CPP if custom value desired
* Ensure filament sensor is enalbed via MK3 menu the first time you flash your MK3 to ensure your MMU2 gets messages when filament gets to the MK3.
* Load/Unload and MMU Parameters should be set in Slic3r for best performance

## When in error state Active Extruder LED will blink
RED if Filament in FINDA
GREEN if FINDA is clear
* If unload or load failed
* Troubleshoot issue, usually was due to being caught on an edge or ground section of filament
* Note: If fial on UNLOAD the LED will show on teh extruder load is going to instead of current
* Note: Failed LOAD where filament is found partly in Extruder requires a burst of air to clean MK3-FSensor
* If printer has shut down heaters, click MK3 wheel before clearing MMU2 issue with middle button
* *ALWAYS* ensure filament pulled clear of selector.
* Push middle button to rehome and continue
* If it doesn't work, filament is in FINDA, check again

### **RED if FINDA sees Filament**
### **GREEN if FINDA is clear**
* If unload or load failed
* Troubleshoot issue, usually was due to being caught on an edge or ground section of filament
* Note: If fail on **UNLOAD** the LED will show on the next extruder instead of current
* Note: Failed **LOAD** where filament is found partly in Extruder requires a burst of air to clean MK3-FSensor
* If printer has shut down heaters, click MK3 wheel before clearing MMU2 issue with middle button
* **ALWAYS** ensure filament pulled clear of selector.
* Push middle button to rehome and continue
* If nothing happens, filament is in FINDA, check again
* If load fails again, give MK3-FSensor another burst of air and try again

## Slic3r Advance Settging for load/unload Speed
![MMU2-Slic3r-LoadUnload-Speeds](/MMU2-Slic3r-LoadUnload-Speeds.png)
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