Re: [PSUBS-MAILIST] Rudder angle indicator

[Jim Rudholm <jimrudholm@gmail.com>]

Group,
Would the Hall-effect device electric scooter twist grip control have
any advantage over the MagnetoPot?

Jim R.

On Thu, Mar 25, 2010 at 12:08 AM, Alan James <alanjames@xtra.co.nz> wrote:
> Hi all.
> My magnetopots ( magnetic potentiometers) arrived today & I was wrapped with
> them.
> The rotary magnetopot was described by Digi-key as 46mm diameter.
> It was actually 65mm, which means it can fit larger shafts. The internal
> hole
> which is 26mm can also be bored out to 35mm to fit a larger shaft.
> All I had to do to water / pressure proof them was to glue a flat cover on
> the front.
> I did this because I noticed the front was slightly spongy over the track
> area.
> The wires coming out of it also need potting.
> Photos & description are on the projects page.
> http://www.psubs.org/projects/1235435392/positionsensor/
> Jens, my motors will be rotating through 180 degrees so the potentiometer
> will only be moved
> through 5k not 10k. My preferred range is from 7.25k to 2.25k but I can do
> any 5k range from
> 10 to 0. How does that work out with your LED indicator? The linear pot will
> be going through
> the full 10k resistance range so that should be OK with your currant
> circuit.
> Can I have your schematic for that??? & what would be entailed for it to
> work through the 5k
> range??
> Here's where you find these magnetic pots.
> http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=1967210&FV=fff4001e,fffc0389
> Regards Alan
>
>



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