Here's what I'm doing:
 
gumstix <--- serial com uart ---> gp3 <--- pwm --- Dual-axis Accelerometer
 
gp3: http://awce.com/gp3.htm ($49)
bullet

8 general purpose I/O lines (digital input/output with special features like PWM or pulse output)

bullet

5 10-bit A/D inputs (separate from digital pins)

bullet

1 hardware PWM output (operates continuously)

bullet

1 hardware counter input (operates continuously)

bullet

1 LED under software control


Memsic 2125 Dual-axis Accelerometer:  http://www.parallax.com/detail.asp?product_id=28017 ($29)
 
Now there is a Tri-axis Accelerometer you can get through parallax.  Here is a link to different sensors: http://www.parallax.com/html_pages/products/componentshop/sensors.asp
 
I actually bought the robostix, but haven't gotten around to using it, so I can't give you much advice on it.

-David McCutcheon




> To: gumstix-users@lists.sourceforge.net
> From: chad@nonstatement.com
> Date: Wed, 20 Dec 2006 16:45:54 -0500
> Subject: [Gumstix-users] Accelerometer implementation
>
> Has anyone used an accelerometer with a gumstix without the robostix?
> I am thinking of using a 10-bit A/D, and didn't know the best way to
> go about it. Any suggestions?
>
> -Chad Lathe
>
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