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kasey

Fixed Stepper motors missing some steps

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Hello,

I have an simple head Ultimaker with a pcb 1.5.6, flashed with the last firmware (UM-v1.1-PCB1.5 115200) but I encounter an issue with my steppers. When I start an extrusion, after some seconds, the steppers miss many steps and do very stange songs, like if the uC was submerged by some interrupts.

I have made a movie to explain that :

http://forge.kasey.fr/movies/ReplicatorMotorDriverIssue.mkv

I have :


  • [*:1o741sty] checked power supply, I have a continuous 19.6 v
    [*:1o741sty] try replicatorg, printerface, Ultimaker hardware controller
    [*:1o741sty] check connectors
    [*:1o741sty] double flashed the Arduino 2560

Somebody have an idea for the origin of my problem ?

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