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Super PINDA 25 minute calibration  

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SeattleDavid
(@seattledavid)
Estimable Member
Super PINDA 25 minute calibration

I just upgraded my Mini to a Super-Pinda (black tip replacing orangish tip).

I remember reading somewhere that there was a precise calibration process that took 20~25 minutes and did a 1000-point calibration.

My mini continues to o 9-point calibration and doesn't indicate anything to show that it knows the PINDA is "Super"?

 

1) Do I need to do something to trigger the 1000 point calibration? Or is the 1000 point calibration (that takes 20~25 minutes) only for the Mk3?

 

2) Is there a way to confirm that the Mini knows the PINDA is "Super"?

 

Posted : 13/01/2021 1:44 am
Gordon W
(@gordon-w)
Reputable Member
RE: Super PINDA 25 minute calibration

1) I'm not aware of any 1000 point calibration routine on the Mini. I think the Mk 3 does 7x7 point and can do multiple 'probes' per point, so may get to 1000 points.

2) The Mini doesn't need to know what what Minda / Pinda it has fitted as it's "just" a switch. The Super Pinda is more stable across the operating temperature, so it is more consistent when calibrating.

I have fitted a Super PINDA to my Mini and there is no change to the calibration process.

Posted : 14/01/2021 9:57 pm
SeattleDavid
(@seattledavid)
Estimable Member
Topic starter answered:
RE: Super PINDA 25 minute calibration

The Prusa Mk3 advertises a 32x32 (1024 point calibration) with the Super-PINDA.

I had assumed the Mini did this as well.

Posted : 14/01/2021 11:32 pm
bobstro
(@bobstro)
Illustrious Member
RE: Super PINDA 25 minute calibration

You can find the details of the new mesh bed leveling for the Mk3 on the GitHub pages here. The new algorithm uses a 32x32 grid for a total of 1,024 test points.

 I don't see an equivalent entry in the Mini pages, so can only assume the feature hasn't been rolled out for the Mini yet. They may just be using the SuperPINDA as a MINDA for now.

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and miscellaneous other tech projects
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Posted : 15/01/2021 1:12 am
Skreelink
(@skreelink)
Estimable Member
RE: Super PINDA 25 minute calibration

Woo, doing a 32x32 before every print would be rough taking a half hour pre-print time... I couldn't imagine doing that just to run small prints or something.

 

@seattledavid

In your opening you said 9 point, the Mini has a 4x4 - 16 point mesh bed level. The MK3 has a 3x3 - 9 point mesh by default, and a 7x7 - 49 point as an option. However, with the 7x7, 11 of the 49 are close to magnets and can throw them off, there's a magnet compensation that ignores those 11 for that reason. The new 32x32 seems a bit much, but I guess time vs REALLY level bed... I guess it's technically a shorter time than printing a safety raft.

 

EDIT: Checking the github, the new 32x32 is only for XYZ calibration, not the standard MBL procedure. 

This post was modified 3 years ago by Skreelink

I think I know, I don’t think I know. I don’t think I think I know, I don’t think I think.

Posted : 16/01/2021 4:03 am
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