uint64 timestamp # time since system start (microseconds) uint64 timestamp_sample uint32 device_id # unique device ID for the sensor that does not change between power cycles float32 dt # delta time between samples (microseconds) float32 scale uint8 samples # number of valid samples int16[32] x # acceleration in the NED X board axis in m/s/s int16[32] y # acceleration in the NED Y board axis in m/s/s int16[32] z # acceleration in the NED Z board axis in m/s/s uint8 rotation # Direction the sensor faces (see Rotation enum)