title: Gps, Sensors and wake
body: <p>I have a program that reads and writes all the sensors values ​​file, but when you turn off the screen stops the listener on the sensors and the record on txt file.
  I already tried with the wake lock, but with little success, I want to know if you have ideas or if I have to resort to a wake to keep me always on the monitor, let me know.
  thanks</p>