Hello,
I am using the RPi 4 and Navigator setup and have the Bar-30 connected to the I2C port on the Navigator. The pressure sensor is reading negative values for both pressure and temperature, even though they should both be positive. The pressure sensor is brand new, and I have seen the same problem for several of these sensors. The problem seems to happen randomly and there does not seem to be any clear steps to reproduce the issue or how to fix it. Sometimes it will resolve itself by just waiting for a long time or doing several reboots.
Here is a picture from Mavlink inspector of scaled pressure 2:
It seems that the pressure sensor is still able to detect changes in pressure. I can see that the press_abs value in scaled_pressure2 changes as I move between different depths with the ROV, and that the difference in press_abs corresponds well with the difference in depth.
Looking at the BARO2_GND_PRESS, I can see that the value is very strange, as I expect it to be in the range of 100kPa. Here is a picture of what it looks like:
