Alt-BEAM Archive
Message #03171
To: James Wilson jamewilson@globalserve.net
From: Jacob Booth J.Booth@mackillop.acu.edu.au
Date: Mon, 10 May 1999 21:36:33 -0700 (PDT)
Subject: [alt-beam] Re: Flying bots
At 01:32 11/05/99 +1000, you wrote:
>
>
>I recently found a large number of three position gravity switches. A
>ball bearing encased in a clear plastic case that when tilted will cause
>the bearing to roll from one end to the middle or the other end. Six
>leads total about 1/2" x 1/2" x 5/8". If any one is interested I will
>inquire about pricing.
>
>James
>
There is also a similar 'tilt' style switch available from Oatley
Electronics ( www.oatleyelectronics.com ) for AUD$1.50 Ea. These look like
the old style metal IC cases (or a metal can type transistor) with one
centre leg (the common lead) and around it in a circle 8 legs for 'angle of
tilt' output. I have purchased some and have played with them a little.
Apparently there is a small dimpled 'ball' that rolls about inside the case
to make contact between the pins. Not very accurate, but good for rough
input ie an anti-tip over system for a walker perhaps, rather than a
stall/angle of incline sensor.
-----------------------------
j.booth@mackillop.acu.edu.au
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