Pre-heat causes Z raise

derhopp / Marlin-with-Anycubic-i3-Mega-TFT

Fork Marlin Firmware to support the Anycubic i3 Mega TFT

GNU General Public License v3.0

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Closed ollie-campbell closed 5 years ago

ollie-campbell commented 5 years ago

Using the Pre-heat options via the LCD causes the Z axis to raise.

Expected behavior: [What you expect to happen] Just the hotbed and nozzle to heat to the set temperatures.

Actual behavior: [What actually happens] The hotbed and nozzle do pre-heat, but the Z axis raises. Configuration.zip

newPOPE commented 5 years ago

Is it only for PLA preheat?

I think that is normal for Z raise. One of the reason can be that hot filament can drop down from nozzle. Why is the issue for you?

ollie-campbell commented 5 years ago

Hello, I haven't tried the Pre-heat for ABS but will try when my print has finished.

It is not an issue, it is just different from the standard firmware that ships with the printer and presumed that it must be a bug.

newPOPE commented 5 years ago

:) for me is a good access from printer => no issue. Maybe @derhopp will know more.

derhopp commented 5 years ago

This feature is meant to protect your bed surface. If z<10 and you enter preheat on the TFT the axis rises.

Working as intended —> no bug. Closed.

ollie-campbell commented 5 years ago

Ahh I see. I looked at the differences listed on Github and didn't see it mentioned so thought the worst!

Thanks for the detail 👍