@eaton-ren Maybe the problem is the voltage level on the step/dir/enable lines. I wired the step/dir/enable directly to the corresponding + and - step/dir/enable outputs on a Duet2 expansion board.
I did not use the alarm output...
Controversial posts made by mrehorstdmd
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RE: How to configure the closed-loop motor on duet 2posted in Duet Hardware and wiring
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RE: Burned filament on nozzleposted in 3D Printing General Chat
Clean the nozzle before the print starts by manually brushing it and try reducing extrusion/flow a bit. Any over extrusion results in filament boogers sticking to the nozzle and charring, and eventually getting stuck to the print. I print TPU at 240C and get clean results.
I tried using a brush to clean the nozzle automatically- it doesn't work. You have to brush and drag it over a silicone blade to really get it clean. It's not as easy as it would seem.