[simpits-tech] Hall effect sensor question

[Roy Coates]

I dicked about with some Allegro A1302 devices and found them to be
extremely smooth and consistent. Using Gene's 'pen' method I was getting
good rotational readings with no dead spots.  I'm now using these in a
linear fashion with no problems.

I think Gene has a youtube video showing this?

Roy.


On 20 October 2012 22:18, <dabigboy at cox.net> wrote:

> Hey Gene (and anyone else who has played with Hall effect sensors), I am
> working on something totally unrelated to flight controls at the moment,
> but I am considering the use of Hall effect sensors. Question: if you
> position a couple magnets around a Hall sensor, exactly how much of a
> complete rotation can the sensor read? IOW, if you rotate the sensor (or
> the magnets around the sensor) 360*, will you get a relatively linear
> resistance curve out of the sensor? I'm guessing if you started with the
> sensor in a position to read lowest (lowest resistance, basically), then at
> 180* the resistance would be highest, and as you continued the rotation,
> resistance would start going down again until returning to the original
> starting point. No?
>
> If Hall sensors work something like this, then I think I may have a very
> interesting use for them.
>
> Matt
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