This is the accelerometer Triple Axis Accelerometer Breakout - MMA7361 - SEN-09652 - SparkFun Electronics with the same wiring and code as shown in this tutorial http://www.geeetech.com/wiki/index.php/MMA7361_Triple_Axis_Accelerometer_Breakout . It outputs the g forces along each axis and I have taken the square root of(x^2+y^2+z^2) to determine the magnitude. Hope this helps and thanks for your help.