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Octoprint and MMU  

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arnaud.d
(@arnaud-d)
Eminent Member
Octoprint and MMU

I have some hard time printing with octoprint with my MMU.
I have some issues when i need to stop a print because octoprint didn't unload filament.

In octoprint you can use GCODE scripts for some action, like :
-After print job completes
-After print job is cancelled
-...

Any idea what scripts to use ?

Posted : 31/05/2017 6:54 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Octoprint and MMU

When you cancel a print via Octoprint, you need to manually unload.

When I cancel, I raise Z at lease 20 mm, set temp to first layer temp, go to the printer and select unload, cut the end and reload.

Yes, it's a bit of a pain, but it works.

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 01/06/2017 8:28 am
arnaud.d
(@arnaud-d)
Eminent Member
Topic starter answered:
Re: Octoprint and MMU

Yes I do the same but i use octoprint for remote surveillance, if i have to cancel a print remotely ... i have 100% chance of a jammed filament .

Can we script your action with some gcodes commandes ?

Posted : 01/06/2017 2:29 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Octoprint and MMU

Yes, you can program the "unload". After raising the nozzle you can add something along the lines of this:

G1 X0 Y200 F3600 ; move bed for easy removal
G1 E12 F2100 ; unload filament
G1 E-80 F5000
G1 E-5 F3500
G1 E-5 F2400
G1 E-2 F1000
G1 E10 F300
G1 E-10 F300
G1 E10 F600
G1 E-10 F600
G1 E10 F900
G1 E-10 F900
G1 E15 F1200
G1 E-15 F1200
G1 E5 F600
G4 S1 ; pause 1 second
M107 ; turn off fan
M104 S0 ; turn off temperature
M140 S0 ; turn off heatbed
M84 ; disable motors

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 01/06/2017 3:52 pm
arnaud.d
(@arnaud-d)
Eminent Member
Topic starter answered:
Re: Octoprint and MMU

Thanks i will try this after work !

Posted : 01/06/2017 4:14 pm
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