Cheap accellerometers?

Analog Devices has some - IC package, various ranges. Look for "ADXL" part numbers.

-dave w

Analog Devices offer free samples. There are several app notes on the web site. Beware that they are also excellent vibration sensors and need both hardware and software filtering to get accurate acceleration data.

ADXL210

Available through Digi-Key. Depending on packaging the price is as low as $15.30 each.

This is a surface mount part (as are all of the Analog Devices accels) and has a PWM ouput so you do not need an ADC.

David Harper wrote:

Wow, those look pretty amazing. So for the dual axis accelerometers all you need to do is set the duty cycle with a resistor to ground, add capaciter filtering, and measure the duty cycles?

The single analog one looked even easier.

I appreciate the info!

Dave

I got the sinle and dual axis from Analog for free. Fillin the form on the website..They do offer free samples of a lot of their products..

Thanks for the advice! I got a free ADXL210 today from Analog. Awesome. Only thing is I didn't look at the spec sheet too closely. It's a 1.27 mm pitch 8-lead LCC package, and I haven't been able to find a connector for it anywhere. Looks like I'll have to strap a magnifying lens to my face, break out the fine-tip for the soldering iron, and down about 10 diet cokes to get that thing on a board.

Appreciate the tip though! Dave

try these boards

David Harper wrote: > Thanks for the advice! I got a free ADXL210 today from Analog. > Awesome. Only thing is I didn't look at the spec sheet too closely. > It's a 1.27 mm pitch 8-lead LCC package, and I haven't been able to > find a connector for it anywhere. Looks like I'll have to strap a > magnifying lens to my face, break out the fine-tip for the soldering > iron, and down about 10 diet cokes to get that thing on a board. >