I have a +/-1.2g digital and analog accelerometer and am currently running it as analog. Here's all the pertinent info:
-It is running off the 5Volt power and putting both analog Voltages out to two analog pins on the arduino.
-At rest it outputs in the 500's (which is close to 2.5V or 0g)
-The specific accelerometer/breakout board can be found here: http://www.sparkfun.com/commerce/product_info.php?products_id=843
My question is how do I tell what output is equivalent to 1g or .5g or whatever?
How do I convert the voltage input (0-1024) to a gravity number, what scale does it sit on?
More important (esp. for others) how do I figure this out in general with an analog accelerometer?