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Published 20 hours ago • verified publisher icon prusa3d

MMU2 sometimes skipping steps on homing (1.0.6)

Open vintagepc opened this issue 5 years ago • 2 comments

I've noticed that sometimes the selector will not home normally. Often it will do the "tap-tap-tap" routine but recently (possibly related to stealth mode changes?) it's started running into the end stop for longer periods until it detects the home; instead of a quick tap one or more will be a longer "BRRRRRRRRRRRRRRT" where it is skipping steps.

Screws on the leadscrew nut and motor are tight; I'm going to try switching between stealth and normal mode to see if that seems to be related.

vintagepc avatar Aug 19 '19 02:08 vintagepc

hi this is a problem of the hc595 buffer. you need to add buffer capacitors or try my firmware fix.

https://github.com/chriswal/MM-control-01/archive/Pinda_Endswitch.zip this firmware is the same as 1.0.6 i added fixes and the possibility to use an endswitch on the idler. https://www.thingiverse.com/thing:3783694

chriswal avatar Aug 21 '19 02:08 chriswal

Just to note that running in normal mode it still does this. So it is not related to the stealth mode changes in 1.0.6

vintagepc avatar Aug 23 '19 00:08 vintagepc