attila77,

The points you bring up are all valid, I'm aware of these problems. For my application I would like to get an estimate of the motion of the device during a short time window (~200ms). It is not necessary to process the samples in real time, the processing is done after all the samples have been acquired.

I'm not sure if the accuracy/SNR of the sensors are good enough for my application. I guess I will wait until I get my hands on a device and see. I will probably extend the kernel module of the sensor so that the acquisition of a block of samples can be triggered via sysfs. After the samples have been acquired they can be read via sysfs as well.