2 downward facing rangefinders (which one does it use?)

If I am using 2 downward facing rangefinders (#1 uLanding on serial and #2 Lightware on i2c) which one is used for terrain following? Is there a way to blend the readings if they are mounted at the same height? Thanks.

Do not do that, it is not supported in the code.

But if you do… please report back. I`m curious about the result!

Thanks, but to clarify do not do what exactly? Install 2 downward facing rangefinders or attempt to blend the results.

I have them both currently installed and functioning and they are both reporting their respective measurements. I just have not yet attempted a flight with WPNAV-RFND_USE enabled.

No problem, but I don’t know if blending occurs.