I am not getting the correct value of external pressure in BlueOS when the external pressure sensor is connected to pixhawk

Blue Robotics Software BlueOS
1

i am not getting the correct value of external pressure in BlueOS when the external pressure sensor is connected to pixhawk
PSE

2

Hi Lahari, welcome to the Blue Robotics forums!

Are the values you’ve shared from the sensor in air, or submersed to a depth more than ~1 foot? This calculator can inform values you might expect to measure.
Is the sensor installed on a BROV2?
Are you using a Raspberry Pi 3B+ or 4?
I hope you’re enjoying BlueOS!

3

Thank you for your reply.
The Values I shared is from the sensor in air. Even in the water we are getting his type of values.
I am using Raspberry Pi 3B+.

4

Hi @Lahari,

This is a known issue where ArduSub creates multiple instances of the same sensor driver, which then conflict with each other when attempting to read the measurements from the sensor.

That double-instancing problem has already been fixed in the codebase, and should be available in the next version of ArduSub. As a workaround in the meantime it should work to un-check the MS5837 option in the BARO_PROBE_EXT parameter, because ArduSub already checks for that sensor automatically.