Android Smartphone IMU GPS

-Upgraded to current build toolchain (Android studio & Gradle)

Forked from the Play store app https://play.google.com/store/apps/details?id=de.lorenz_fenster.sensorstreamgps

Original source (CCAL license): https://sourceforge.net/projects/smartphone-imu/

Shield:

This work is licensed under a Creative Commons Attribution 4.0 International License.