Does second baro really matter?

[GoFaster]

Does the second pressure sensor make an appreciable difference in altitude positioning? I see there is an option for the software to use sensor 1,2 or both. I'd like to know so I can decide if I should risk ordering and soldering the missing sensor onto the AQ now.

[jabram]

What is the part number for the second baro ?

[GoFaster]

kinderkram posted on RCG that it's a

[jabram]

Thanks, I guess the second one is for Air Speed measurement.

[kinderkram]

Yes, the second one is for airspeed measuring on fixed wing setups.
On a multirotor using both will only add some redundancy - that's why we left it out on the beta.

[GoFaster]

I'm not certain but in trawling through the current code..if both sensors are present, it calculates the average pressure from them.
Hoping a dev will comment on my initial question.

Edit: kinderkram just replied. Thank you. I'll leave it alone for now.

[kinderkram]

Max made an illustration for those who want to solder the second baro on their own (see attachment).
Shouldn't be a big deal for someone with soldering skills.

[bn999]

[GoFaster]

If 2nd baro is installed later, do static and dynamic calibrations need to be repeated?
Can't find the source for the calibration calc routines so I can't tell if the pressure sensor(s) data plays a part.

[bn999]

It is a small part, but it is real close to the mag sensors. If it were me, I'd re-do dynamic.