Has anyone noticed the AMS feeding and retracting filament when the printer is idle?
I have a roll of generic ABS in slot 1. It did it enough times for the filament to break off the roll. Luckily I was able to get the tiny stub out of the hole the filament feeds into. I haven’t timed it yet but I would estimate it doing it every 5 minutes or so.
I haven’t checked the sensor, the printer was shipped the first week of April.
The firmware is current.
I’ve since put a roll in slot 1 that has an RFID tag and it did it too.
At this point I don’t think it is the sensor, it seems to regular for something that is failing. It would seem more like the software is polling the printer. I’ll sometimes leave multiple computers on with the Device tab open monitoring the printer. I’m thinking through this as I type, the laptop I use by the printer will frequently drop the wifi connection and maybe when the software reconnects it polls the AMS causing it to roll some filament in and out.
I’ll do some more monitoring and testing and see if I figure anything out.
Thanks for the reply, I did see it just a little bit after you sent it.
I’ve found whenever a instance of Bambu Studio is started and connects to the printer it will cycle that first spool.
I have a laptop that will have intermittent wifi connections and each time it reconnects it cycles the #1 spool.
If you close all of your instances of Bambu Studio it should stop doing that if that is the cause your printer is cycling the spool.
This problem has started for me, just this morning. I printed something over night, all Bambu filament. Its slot 1, and it feeds half an inch or so and retracts. But for me, it’s every 60 seconds or so, so I’m worried it’s going to eventually wear something out.
I am currently transferring timelapse files from the printer, over ftp. And I also have Bambu studio open. I just closed the studio however, and it did stop moving. So I guess that’s it. I’d swear I’ve left it open most of the time, and never noticed this. Either way, I’m sure a bug exists, that could be fixed. For now, I’ll just close the studio.