[simpits-tech] phidgits + Building Gauges

[Rod Dale]

Yes, that's John Dunkley at http://www.senet.com.au/~dunkleyj/menu.htm
It's his setup that I tried. As I said it works well except for the speed of
the altimeter.
Rod

----- Original Message -----
From: Ben Jones <bjones@pipecomp.com.au>
To: <simpits-tech@simpits.org>
Sent: Saturday, October 26, 2002 6:34 PM
Subject: RE: [simpits-tech] phidgits + Building Gauges


> rod ,
> there has been a aussie who is making a 747 sim or something in australia
out of a ford car shell,
>
> i cant think of the site at the moment i'll have to look for it, but they
used a standard radio controlled servo running of a basic stamp board, with
a PI hanging off the shaft to report a zero point , aparently it works well.
>
>
> BEN   JONES
> -----------------------------------------
> bjones@pipecomp.com.au
> ------------------------------------------------
>
>
> -----Original Message-----
> From: Rod Dale [mailto:rodd@castle.net.au]
> Sent: Saturday, 26 October 2002 11:35 PM
> To: simpits-tech@simpits.org
> Subject: Re: [simpits-tech] phidgits + Building Gauges
>
>
> There's a small electronic device called a Photo Interrupter (PI) that
could
> be used. This consists of an IR LED (Infra Red) on one side and a
> photo-transistor on the other. These are used in printers to indicate
where
> the carriage is. All you need to do is put a small piece of plastic on the
> shaft of the stepper motor and each time this plastic piece passes between
> the two parts of the PI it cuts the IR to the transistor and signals the
> controller (PC, Basic Stamp, Phidgit etc) that the motor has turned one
> revolution. If you could set up a counting program then you keep track of
> the revolutions and hence the start point and any number of other points
> too.
> I got hold of a heap of old printers and stripped them of these devices
and
> the stepper motors - ready for this sort of thing.
> Can anyone add to this theory ?
> Rod
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