On Wed, 24 Sep 1997, Peter Baines wrote:

> Firstly "Thanks to all who responded to this thread so far" Your Ideas have
> been an insperation. In fact I have now concluded that I probab;y don't
> actualy require an Accelerometer but a 3 DOF movment detector, I am trying
> to build a small device that I can attach to my snowboard that will sound a
> LOUD alarm if anybody tries to "Borrow" it without my permission. It will
> have a small keypad to arm/dis-arm it and must be about the size if a
> ciggarett packet. it will run of a 9V battery. I have most of the keypad
> and I/P O/P code sorted so far it's based on a 16c84. So if anybody has any
> ideas on motion dectection please let me know. It dosent have to be linear
> just digital will do. IE motion /no motion but the sensivtivity must be
> quite good.
>
> Thanks again for all the help so far .......
>
>
> Cheers Peter ............
>
PTM: Make a small cage of wires that are insulated of each other. Three
wires should be enough. Connect the to a sounder. Put a metal ball in the
cage. When you move the cage, the ball rolls and makes new connections.

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