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Constant disconnects over USB  

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Matto
(@matto)
Eminent Member
Constant disconnects over USB

I have a 2 week old Prusa MK3S+ and I am using with a Raspberry Pi 3 running OctoPrint.  This OctoPrint server has been running rather continuously since March 2020 on another printer with zero issues (same hardware).  When I connect it to the MK3S it works for a time, then eventually loses the USB connection.  I then lose that functionality for a time, as if I reconnect the USB it forces a reset on the MK3S.  Any thoughts as to what the issue could be here?  I'm not sure if there is some known aspect to the MK3S that I am missing as it relates to OctoPrint connections.  

 

Thank you'

 -Matt

Stock Prusa MK3S+ built from kit on 12/2020
OctoPrint, typically print from a drybox, no enclosure yet
Printing proudly since 2011

Posted : 01/01/2021 12:36 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Constant disconnects over USB

Does this help? 
https://community.octoprint.org/t/octoprint-keeps-running-into-communication-errors-and-timeouts/227

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

Posted : 01/01/2021 1:26 pm
Matto
(@matto)
Eminent Member
Topic starter answered:
RE: Constant disconnects over USB

@joantabb

Thank you, that helps a lot.  I searched for a while and did not find that thread.

I'll try both switching Pi's (I think I have a Pi 4 Model B sitting idle) and increasing those timeout settings.  

Thanks,

 -Matt

Stock Prusa MK3S+ built from kit on 12/2020
OctoPrint, typically print from a drybox, no enclosure yet
Printing proudly since 2011

Posted : 01/01/2021 1:38 pm
Matto
(@matto)
Eminent Member
Topic starter answered:
RE: Constant disconnects over USB

A little early to declare victory, but after 1 hour the RPI4 is working MUCH MUCH better than the RPI3.  I would have had 3-5 disconnects by this point.  Same SD card.

 -Matt

Stock Prusa MK3S+ built from kit on 12/2020
OctoPrint, typically print from a drybox, no enclosure yet
Printing proudly since 2011

Posted : 01/01/2021 5:43 pm
Matto
(@matto)
Eminent Member
Topic starter answered:
RE: Constant disconnects over USB

Ok, its  been printing like a champ for about 8 hours yesterday and a few hours this morning.  Switching from the RPI 3B (not plus) to an RPI 4 seems to have solved the issue.   Zero changes to any other hardware or settings, exact same SD Card.  Exactly as described by "Brent_Dowell" in the first comment on the linked post above.  Easiest fix of a tech issue in a while. 🙂

 -Matt

Stock Prusa MK3S+ built from kit on 12/2020
OctoPrint, typically print from a drybox, no enclosure yet
Printing proudly since 2011

Posted : 02/01/2021 12:44 pm
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