Do you know what your sensors measure?
Now you can readout the most of the Sensors of your device for free!
Here a quick overview of the sensors used:
http://developer.android.com/guide/topics/sensors/sensors_overview.html
If you want to improve this App send me an e-mail, pls.
You can send me new App-Ideas, too.
Here you can join the Beta-Testing circle:
https://play.google.com/apps/testing/de.masterglancedev.readsensors
There is no warranty at any kind especially for destroyed sensors or other issues.