> -----Original Message-----
> From: paul x [mailto:paulx@MAIL15.COM]
> Sent: 08 December 2003 02:34
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]:ADXL202 Accelerometer. Size the hammer correctly.
>
>
> what I tried is to measure speed of moving object that driven
> by motor.
>
> acceleration, a is too small comaparing with gravity g. So,
> little tilte
> will
> become huge output of a. How can I canceal g from a, becomes critical!
> For proper cancealation of g from a, I need three axiles
> measurement and
> large amount of calculation.
>
> I have not try how to measure 3 acceleration by one pic,although I got
> quite good reading from one measurement, in a 1% range with
> 200 sample rate
> and digital filter.
>
> is there any body succed in speed measurement of using adxl202? I
> never heard.
>
> Paul

I have a GTech Pro performance meter that contains only an ADXL chip and a
PIC.  It measures engine power, 0-60 times and standing quarter times.  The
PIC derives all measurements including speed and distance from the
accelerometer.

http://www.gtechpro.com/gtechpro.html

Regards

Mike




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