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mmu not seen on prusa connect  

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Sumta
(@sumta)
Active Member
mmu not seen on prusa connect

hello folks.
been trying to get a consistent solution to my mmu3 problem.

i have a mk3s+ with mmu3 and pi zero

most times prusa connect will just see it as a mk3s+
if i power cycle it repeatedly it might show the mmu 20-30% of the time but stay busy until i hit the reset button, than odds are, it will go to idle without mmu.  

it is very very rare that it will show mk3s+ with mmu correctly. 

 

Firmware3.14.1-8237
PrusaLink0.8.1

Publié : 01/12/2025 12:08 pm
Joe Grubbs
(@joe-grubbs)
Membre
RE: mmu not seen on prusa connect

I have the same issue with my Core One and the PRUSA Connect, connect does not recognize that there is a mmu3.

 

CoreOne Firmware 6.4.0+11974

Publié : 06/12/2025 1:56 am
Sumta
(@sumta)
Active Member
Topic starter answered:
RE: mmu not seen on prusa connect

i have found a set of steps as a work around for now.
but  a long term fix would be appreceated if someone finds one.

with the printer on and not showing mmu in prusa connect.
step 1: turn mmu off in printer settings
step 2:turn printer off and wait 10~ seconds
step 3: turn on and wait for prusalink to finish loading (prusa connect should show your (my mk3s+) as idle)
step 4: wait 60~ seconds
step 5: turn mmu in settings on and hopefully mmu populates in prusa connect.

works for me for now, i only have 2 units (mk3s+ with mmu3's)  , but a larger farm would find this reset process a problem XD.

Publié : 17/01/2026 8:10 pm
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