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IMU/Compass callibration
#1
After installation of  the last image (21122019) of tiny pilot I have launched calibration on OP via 'pypilot_control box'.
The compass and IMU calibration succeded and the their age values have been reset and shown.

After rebooting tinypilot if I execute the OP client again I can't see calibration age anymore.

On  tinypilot display (5110) calibration info I can see a 'Fair' (sometimes Good) about Compass   but 'N/A' on imu status.


Should I had locked them?

A last thing:
Struggling  with tinypilot calibration (directly on the device) menu a couple of times a screen with (apparently random) dots  and ciclically a sort of arrow has been shown.
Can't find any information about this feature in manuals, anybody knows what does it mean?

Fair winds
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#2
The calibration age is computed from the current time which is reset when the tinypilot reboots since there is no realtime clock. tinypilot only gets the correct time if a gps is directly connected.

The screen you refer to on the calibration of compass is plotting the compass sigma points. This maybe should be removed since it's much better to use opengl for this on a better display.
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