AVR-Chat

----- Original Message ----- 
From: "Richard" <richardt.bradshaw@tesco.net>
To: <AVR-Chat@yahoogroups.com>
Sent: Tuesday, December 02, 2008 7:34 PM
Subject: [AVR-Chat] Accelerometer question


> Hi everybody I have been hanging around here for a while, great forum.
> Do any of you have any experience with accelerometers? I am thinking of
> a project using an accelerometer to measure angles. The idea is this:
> the accelerometer will be on the outer edge of a wheel. As the wheel is
> turned the position of the accelerometer will move then using a bit of
> grigonometry I can calculate the angle that it has moved through. My
> question is how much accuracy can I get. I will be looking to measure
> fractions of a degree on the wheel aprox 4 inches or 100mm in diameter.
> Doing the maths gives a movement of about .88mm/degree so I would like
> to be able to detect movement of about 0.2mm is this realistic?
> Cheers Rich

ADI makes accelerometers that are specifically intended for use as tilt 
sensors.

Leon

Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@btinternet.com
http://www.geocities.com/leon_heller