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Published 20 hours ago • verified publisher icon bigtreetech

MMu2 doesn't recognize commands from SKR 1.4

Open ChGeorgi opened this issue 2 years ago • 2 comments

Hi, i have connected the MMU2 to my SKR 1.4. I can not communicate with MMU2. Wiring is ok. when i connect my PC to SKR i get the MMU2 commands and when i connect my PC to MMU2 i can control MMU2. when i do a reset i can send the X0, S1, S2 command from my PC and have the TX of MMU2 connected to my SKR it works. so it seems, that SKR commands are not recognized by MMU. do i need a level shifter or something else? regards Christian

ChGeorgi avatar Nov 22 '22 09:11 ChGeorgi

I fixed it. iam using the sw reset. during the start the first command was ?X0 instead of X0

ChGeorgi avatar Nov 23 '22 08:11 ChGeorgi

Can you share your settings I'm having the same issue

pstit006 avatar Dec 06 '22 01:12 pstit006