could you do this with a digital incidence meter, it comes off and you can zero it and then put it on the blade. The only thing you would need to know is how to go from degree's to pitch. The other thing is Horzon has a pitch gage for heli. would this work. Thanks Steve
theoretically it is possible, but there are two problems:
1/ those devices are relatively large, while my sensor weights only 1 gram or so, so it is very easy to put on narrow, soft and flexible blade like APC props have
2/ yes I can make table of pitch relative to angle but it is not so neat, the beauty and reason why I decided to do it is, that in reality I not need to mess with tangents and angles, because accelerometer gives two vectors, and all I must do is simple division and it already gives tangens
... so I need just to multiply it by radius, put to proper dimmension and I have pitch :- )))))) ... tangens is not trivial function for such small 8bit risc processor, but result was so small that I had anyway enough space in memory and I anyway did that function, so it can show slope so it allows to measure motor offset etc :- )))