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LIS3LV02DQ

 
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Monk9514524
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LIS3LV02DQ
PostPosted: Thu Oct 30, 2008 9:49 am     Reply with quote
After KamPutty SPI code, I can finally read the data from the Accelerometers(LIS3LV02DQ).

But there is another problem- when Accelerometers stay still on my desk, my data is a little strange, as following data.
Code:
[1428] X=141 Y=-334 Z=16885
[1429] X=140 Y=-334 Z=16890
[1430] X=141 Y=-334 Z=16878
[1431] X=140 Y=-332 Z=16885
[1432] X=140 Y=-334 Z=16881
[1433] X=141 Y=-332 Z=16878
[1434] X=141 Y=-335 Z=16884
[1435] X=139 Y=-332 Z=16881
[1436] X=141 Y=-334 Z=16893

Is that normal when it's still, or I need to find another way to calibrate it ?
asmallri



Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia

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PostPosted: Thu Oct 30, 2008 10:51 am     Reply with quote
Looks like real data to me. Assuming you have set the sensor for +-2G full scale,

Z = is obviously measuring the acceleration due to gravity (1G = 16384). The other non zero values would be due to the minor inclination of the sensor from horizontal and minor offset error.
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