RE: [Autopilot] New 3-axis magnetometer from PNI..

[FlightSense <uav...@fl...>]

> Err.. it's not hard to compute a single 3D vector from the x,y,z
> scalar values. Basic vector math. Try a $2.50 uP and some code.

Could you point to some specific code, I've been too busy with hardware :)

> Now if you need higher speed and precision, you can get something with a
> floating point unit, but that's overkill for most applications.

OK, but may I then assume that PNI charges me $739-$50 = $689 more for an
CPU and some code.
This must be something special, or as you say, for our purpose unneeded
(floating point) overkill.
To me NOT worth $689 ! :)

> Having it on a separate board also makes it easier to mount it remotely
> or shield it as needed.

Also right, but if shielded within a main unit, not having a lengthy power
line to pickup induction is also a approach. As you know, use of 1 central
grounding point prevents ground loops, but if galvanically isolated your
even better of! On the other hand this will not influence the direct
magnetic-interference on the sensors, then the separate board is a choice.
I know this is a tricky issue since I use a sparkplug-ed Zenoah G260RC this
I hope will not spoil my day.

Rgds,
Coert