Connection
To pair a Mentalab Explore with a mobile device or a computer, use
that device’s standard Bluetooth menu. The Explore uses a Serial Profile
Protocol (SPP) over Bluetooth to transfer all raw data as soon as a
Bluetooth connection is established. If the connection is lost, the
Explore goes back to BT-visible mode, and is ready to reconnect.
Explore remains in this state for 4 minutes. If no connection is
established, the Explore will continue recording in offline mode.
To avoid any data loss, Mentalab Explore always records data on its
internal memory, whether there is a Bluetooth connection or not.
Data
ExG data will be sampled at 250 Hz (default value) with a 24-bit
resolution. In addition to ExG data, accelerometer, gyroscope and
magnetometer data is recorded and transmitted. This allows for the
absolute orientation of the device to be derived. Device temperature
and battery voltage are also communicated continuously.
The data is stored in a binary file (.BIN suffix) in the flash memory. It can
be retrieved from the device via USB after recordings. Files cannot be
deleted via USB, instead they are overwritten in a ring-buffer fashion.
To format the memory, you can use the provided API tools. Please refer
to the user manual for more details.
