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From:               "George Huxtable" 

> However, such a device may be of interest for checking tilt and
> measuring accelerations, so I have investigated a similar 3-axis
> accelerometer, not the Analog Devices chip that Frank Jones referred
> to, but one from another maker, the MEMS inertial sensor type
> LIS3L06AL from ST Microelectronics.

For those who would like to fool around with these kinds of things but prefer
software to hardware hacking, the Nintendo Wii remote provides a simple
hardware solution. It uses the Analog Devices ADXL330 chip (3g, but
otherwise very similar to the one George describes). You can buy the
remotes without the game system for about $45.00 around here, and if you
have a Bluetooth adaptor with a  Bluesoleil stack, then the Delphi code
provided at

http://onakasuita.org/wii/index-e.html

will allow you to write your own programs to use the Wii controller (Delphi
can be downloaded for free from Codebase or you can also use Visual Basic
- see the URL above).

I've been playing with it as an aid for rehab exercises following orthopaedic
reconstructions, but so far I haven't done too much with it. I can say that
without the LED registration (The remote senses IR light from LED sources
separated by about 10" to register it's position relative to the screen) the
controller tends to "float" a bit.

Ken Muldrew.

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