Barometer?

[J2.718H]

I have a Tello and a Tello EDU. Both are reporting negative barometer values. Anyone else?
If I use abs(baro) then the data looks good: higher alt= lower baro.

 

[quaddamage]

Looking at the board:
o-gs wiki: WM004 Main Processing Core Board photos

it looks like this one is used:

ILPS22QS - STMicroelectronics

ILPS22QS - Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor, ILPS22QSTR, STMicroelectronics

www.st.com

(physical look and footprint matches)

Try checking in datasheet what are the returned values.

 

[J2.718H]

no help in datasheet (24-bit values).
Numbers vary from day to day but always negative.
One day around -60, another around -30, again around -20 to start.
Data from changing heights behaves correctly if I use abs(baro).
It' like the baro is 'inverted'?!

Example today using tellTello:
>state
>pitch:0;roll:0;yaw:43;vgx:0;vgy:0;vgz:0;templ:60;temph:62;tof:6553;h:0;bat:79;baro:-24.73;time:0;agx:-14.00;agy:1.00;agz:-999.00;