Navio2: No Mavlink data with firmware 2022-06

[liudmila.slepova]

Hi Jukka,

@jukka.rahkonen

Unfortunately I fear that the real issue is a hardware failure. The MS5611 barometer is probably broken. The Barometer.py script prints constant temperature values even if I warm the sensor and the pressure is obviously all wrong

Can you please run the emlidtool test command and post the output here? If there’s something wrong with the barometer, the test should show it.

@jukka.rahkonen

I wonder if there is some way to disable the barometer so that Ardupilot would start without it.

It seems that you can’t do this by changing something in software only.

@jukka.rahkonen

Alternatively, is is possible to configure Navio2 to use an external MS5611 unit instead of the broken integrated one?

If you’re experienced in soldering, there is an option for doing that:

How to use an external barometer with navio2

@Guiboy Hi! There are two ways to do this: Hardware way: a: Unsolder MS5611 chip from the Navio board. b: Connect external MS5611 with address set to 0x77 (using address selection pins of the chip) to the I2C port on Navio. Software way: a. Change Ardupilot code by setting MS5611 address for Navio to 0x76 and compile it. b. Connect external MS5611 with address set to 0x76 (using address selection pins of the chip) to the I2C port on Navio.