MK2.5S MMU2S initial start up issues
Hi everyone! Completely new to MMU printing.
Background: Firmware 3.12.2 and 1.0.6 (using what people say works best with MK2.5S) Running bear frame, mosquito hot end, filament sensor and FINDA all functioning.
Right now everything seems to be communicating just fine when I manually send and eject filament. When I run a start up a test print, I think I first witness cycling of filament for a cooling move. The unit sends filament 1, unloads it, asks me to unload it, loads "new" filament back in (same filament number), then immediately tries to send filament 2 in without ejecting filament 1 or moving the selector, so essentially filament 2 shoots out the unit into the abyss with filament 1 still loaded.
Is this a common issue? I wanted to run more up to date firmware versions but run into the Idler cant home issue that others seem to have (and this is after I plugged the MMU unit in with an additional power source to prevent the MMU MCU failure error.
I could attempt to disable cooling moves, but I figured those are important (as per the manual). Just wanted to get a conversation going with people that may have experience in these kinds of issues. Pretty frustrated at this point since Ive sunk a couples of days into this already. Tons of progress has been made but it seems like Im hitting a wall I cant get through to the point I want a newer MK3 unit.
RE: MK2.5S MMU2S initial start up issues
Upgrade to MK3 if you plan on sticking with a multi-filament system for the long haul.
RE: MK2.5S MMU2S initial start up issues
why is filament 1 being unloaded and re loaded by you?
the MMU should handle loading and unloading internally.
When I had an MMU2, the biggest single problem I had was setting the filament sensor on the extruder... it was difficult to adjust.
you could consider using the MMU3 style Filament sensor, with MMU2 on Mk2.5
https://www.printables.com/model/531604-mmu3-printable-parts/files
Whoops ! you need the base as well...
the Extruder Idler MMU R3.stl has a longer blade than the MMU2 version. which makes the sensor, more accurate, and the chimney / base on the MMU3 version, has a horizontal screw to adjust the sensor, instead of having to manually slide the mmu2 version,
I hope this helps, regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK