Auto calibration failure leads to undefined mm-pixel ratio

[mrandt]

If auto calibration for mm-pixel ratio of either up or down camera fails, the calibration values are all set to 0.

This makes repeating the auto calibration impossible - also optical homing or fiducial detection will no longer work.

I suggest that software should fall back to previous values if auto calib fails.

[thethereza]

just type in some reasonable values and try again. like 1mm or something. more importantly, how is it failing?

[mrandt]

That's what I do - just type a value and then it usually works again.

Reasons why it may fail are:

• no homing mark in field of view
• visual filters not configured correctly
• needle not attached

Suggestion: If auto calibration does not detect a homing mark (down cam) or needle (up cam) or fails for other reason, the old values could be kept instead of overwriting them with zero.

[thethereza]

fixed in next release.

[mrandt]

Thanks, I will retest once available.

[mrandt]

Fixed in SVN Release 18. Thanks!