Printer model

MK3

MMU model

No-MMU

Firmware versions

3.14.0 for Bondtech Extruder

Upgrades and modifications

official Bondtech Extruder upgrade, Sunon 4010 fan for hotend, Misumi linear rods

Printing from...

SD Card

Describe the bug

since upgrading from firmware 3.13.0 to 3.14.0, the setting for filament sensor on/off gets reset to "on" with every start of the printer. I'm not using the filament sensor, so this is really annoying and I have to turn it off every time, so the menu options to manually load/unload filament become available.

EDIT: After a factory reset and some testing, this issue seems to be related to connecting the filament sensor. The issue only seems to occur when it's disconnected, which was the case for me, since I'm not using it at all. I forgot to mention it under "modifications", since I'm so used to it.

How to reproduce

• install firmware 3.14.0 on i3 Mk3 printer (Bondtech version could be the culprit, but I doubt it)
• unplug filament sensor
• start printer
• set filament sensor to "off" (Settings > Fil. sensor > Fil. sensor [on]/[off])
• turn the printer off and on again
• check if the filament sensor is still turned "off"

Expected behavior

settings for filament sensor should persist after turning printer off and on again.

Files