Hi bboettjer?
I'm currently trying to `calibrate  +-adxl330 accelerometer and have found this forum to have some useful infos. Just curious with regard to the following discussion from bboettjer:
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"For the X Axis
((Max X value) - (Min X Value))/2g = sensitivity
(2400-1600)/2 = 400/g
(The 2 is because we are at +1g@2400 and -1g@1600, encompassing a full 2g)"
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Isn't the sensitivity equal to ((Max X value) - (Min X Value))/6g instead of ((Max X value) - (Min X Value))/2g for +-3g adxl330 accelerometer?

The followings are reading  and calibration procedure done for data from adxl330: Because I'm not sure of the correct formula for the sensitivity, my calculations are really going to be wrong. What I'm really interested in is to be able to get correct reading for acceleration. Please help me.
I'm intending to use my accelerometer for vibration reading and later perform further data analysis.

Please provide me with better calibration procedure for all the three axis(x,y,z) using my values(the provided values below).
Thanks you

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I've to correct the other values to be(for x-axis):
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voltage/0gADCCounts=1.65/652 =0.002530675

   - For an Accelerometer reading of  805, the real voltage measured is (805 x 0.002530675) = 2.04V
   - For an accelerometer reading of  652, the real voltage measured is (652 x 0.002530675) = 1.65V
   - For an accelerometer reading of  523, the real voltage measured is (523 x 0.002530675) = 1.32V

I've to correct the other values to be(for Y-axis):
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voltage/0gADCCounts=1.65/675 = 0.002444444

   - For an Accelerometer reading of  812, the real voltage measured is (812 x 0.002444444) = 1.98V
   - For an accelerometer reading of  675, the real voltage measured is (675 x 0.002444444) = 1.65V
   - For an accelerometer reading of  523, the real voltage measured is (523 x 0.002444444) = 1.28V
   

I've to correct the other values to be(for Z-axis):
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voltage/0gADCCounts=1.65/675 = 0.002462697

   - For an Accelerometer reading of  803, the real voltage measured is (803 x 0.002462697) = 1.98V
   - For an accelerometer reading of  670, the real voltage measured is (670 x 0.002462697) = 1.65V
   - For an accelerometer reading of  530, the real voltage measured is (530 x 0.002462697) = 1.31V

for x-axis:
((ADC_max X value) - (ADC_min X Value))/6g = sensitivity
(805 - 523) / 6 =47/g

for y-axis:
((ADC_max_X_value) - (ADC_min_X_Value))/6g = sensitivity
(812 - 523) / 6 = 48.2/g

for z-axis:
((ADC_max_Z_value) - (ADC_min_Z_Value))/6g = sensitivity
(803 - 530) / 6 = 45.5/g
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Are

Thanks