CF2 barometer not working

[mueee]

Hej,
the barometer on my Crazyflie 2 seems not to be working properly - i just read back a constant negative value (see screenshot).

The value varies at every startup of the CF.
I'm using the firmware version 2015.08.1 (also tried version 2014.12.1) and cfclient version 2015.08.
Can this be a software/firmware issue, or is this rather a hardware problem (e.g. broken sensor / bad soldering)?
Can anyone suggest any debugging steps? Which component on the PCB actually is the barometer?
Thanks in advance!
Cheers!

[arnaud]

Hi,

This looks quite strange. The pressure sensor is the only small square chip on the bottom of the Crazyflie. Because you are getting a value at startup it does not look like a soldering issue but you can always try pressing a bit on the chip to see if it helps. It is U10 on this placement file: https://wiki.bitcraze.io/_media/project ... bottom.pdf