aaaah! but does it measure airspeed, in knots!!!.... I got my little Arduino project working.
For a daft old bugger like me, that is an achievement.
It records pitch & roll once a second to an SD card.
Next step is to add a Real-Time Clock date & time stamp to every record.
I hope to shrink this down to an Arduino Nano and stick it all in a little project box for use on the trike.
Not my initial "requirement", but I am helping a mate out and he wanted one.