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bkubicek / Marlin

Reprap FW optimized for gen6
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repetitive clicking #5

Closed bkubicek closed 13 years ago

bkubicek commented 13 years ago

Citation Joel:

Another very strange finding of mine is: After a print when I leave the steppers activated my X-stepper starts to click (loose steps without even moving). The active cooling on the regulators and on the stepper itself are still active though. HOW can it happen, that without printing this stepper gets this hot? Please try to check this with your machines and have a close watch on hotter steppers due to some firmware bug (my impression is that since Marlin, the steppers get hotter faster, with just idling - I'm not talking about the printing itself).

from Bernhard: Every 0.5 to 1 second the extruder looses its holding power. It hence clicks. Possibly its the same for other Steppers too. Probably non-lcd related, as also present with lcd disabled. Could be some residual watchdog timer thing, that however should be disabled du to Arduino stk500 bootloader quirks with Watchdog.

bradleyf commented 13 years ago

Likely the LCD updates.

bkubicek commented 13 years ago

No, it was my extruder stepper driver that went into periodic thermal shutdown. Not a firmware issue at all...