Re: O/T Digital Position sensing [SEC=PERSONAL]

[Roppola, Antti - BRS-2]

Or mechanical. Say a crank that reaches out to an arc of mcroswitches?

Here's a position aware elctro-mechanical device I was troubleshooting
for someone last week:
        http://www.sandcruiser.com/07pics/edic/edic.html

Cheers,

Antti

-----Original Message-----
From: linux-bounces@...
[mailto:linux-bounces@...] On Behalf Of Keith Goggin
Sent: Tuesday, 3 November 2009 11:12 AM
To: linux@...
Subject: [clug] O/T Digital Position sensing

Could anyone recommend some light reading on Digital Position Sensing?


I need to know the position of a shaft that can rotate through about 90
Degrees. I have tried a rather crude setup with a micro-switch but I
require something a little more sophisticated.
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[Andrew Janke]

> Could anyone recommend some light reading on Digital Position Sensing?
>
>
> I need to know the position of a shaft that can rotate through about 90
> Degrees. I have tried a rather crude setup with a micro-switch but I
> require something a little more sophisticated.

I'd just duck off to a car wrecker and pick up a crank-angle sensor.

Something like this:

   http://wiki.r31skylineclub.com/index.php?title=Crank_Angle_Sensor


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[Peter Barker-2]

On Wed, 4 Nov 2009, Andrew Janke wrote:

>> I need to know the position of a shaft that can rotate through about 90
>> Degrees. I have tried a rather crude setup with a micro-switch but I
>> require something a little more sophisticated.
> I'd just duck off to a car wrecker and pick up a crank-angle sensor.
>   http://wiki.r31skylineclub.com/index.php?title=Crank_Angle_Sensor

On the reduce,reuse, recycle theme - if you have an old mechanical
(non-optical :-) mouse, it has the pieces needed.

> Andrew Janke

Yours,
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[Peter Barker-2]

On Wed, 4 Nov 2009, Peter Barker wrote:

> On the reduce,reuse, recycle theme - if you have an old mechanical
> (non-optical :-) mouse, it has the pieces needed.

Whoops... forgot, "if you knew where you were when you started" :-)

>> Andrew Janke

Yours,
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Peter Barker                          |   Programmer,Sysadmin,Geek.
pbarker@...      |   You need a bigger hammer.
:: It's a hack! Expect underscores! - Nigel Williams
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