Freematics ONE now comes with MPU-9250 MEMS sensor! The supporting Arduino library and example sketches (in Github) have been updated for 9-axis MEMS data access. To order Freematics ONE with MPU-9250, make sure to choose MPU-9250 in MEMS option on the order page.

Code clip of accessing MEMS data.

int acc[3]; // accelerometer data
int gyr[3]; // gyroscope data
int mag[3]; // magnetometer data
int temp; // device temperature (in 0.1 celcius degree)
if (memsRead(acc, gyr, mag, &temp)) {
  // success