[clug] O/T Digital Position sensing

[Alastair D'Silva]

> -----Original Message-----
> From: linux-bounces at lists.samba.org [mailto:linux-
> bounces at lists.samba.org] On Behalf Of Keith Goggin
> Sent: Tuesday, 3 November 2009 11:12 AM
> To: linux at lists.samba.org
> 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.

One simple method that I have seen used in measuring propeller shafts, as
well as throttles for electric bikes is to epoxy a small neodymium magnet
onto the shaft. You can then read the position of the shaft via a Hall
effect sensor adjacent to it.

Cheers,

-- 
Alastair D'Silva           mob: 0423 762 819
Networking Consultant
New Millennium Networking  web: http://www.newmillennium.net.au
skype: alastair_dsilva     msn: alastair at d-silva.org
blog: http://alastair.d-silva.org