| Sensor | Output | Sampling rate | Additional information |
|---|---|---|---|
| Galvanic Skin Response (GSR) | kΩ | 200ms | Defaults to 340330 kΩ |
| Heart rate (HR) | bpm, quality | Event based | Defaults to somewhere around 75. Quality (0 or 1) signifies reading reliability. Logging format: hr;quality |
| Inter-beat interval (RR) | seconds | Event based | Time between QRS complexes, can be used to calculate heart rate. https://courses.kcumb.edu/physio/ecg%20primer/normecgcalcs.htm |
| Gyroscope (GYRO) | acceleration, angular velocity | 16ms | Logging format: ax;ay;az;vx;vy;vz |
| Accelerometer (ACC) | acceleration | 16ms | Logging format: ax;ay;az |
| Barometer (BARO) | mBar, ºC | ~1s | Pressure readings seem to jump quite a bit. Logging format: pressure;temperature |
| Ambient light (AMBIENT) | lux | ~500ms | Sensor is on the same side with the display, not facing the skin |
| UV Sensor (UV) | level (0-6), average today | Event based | This sensor has very coarse accuracy and reports in levels. Logging format: lvl;avg |
| Skin temperature (SKIN) | ºC | ~30s | Not same as barometer. Please note the slow sampling rate. |
| Altimeter (ALTI) | rate in centimeters | ~1s | Use barometer for more extensive readings. |
Logfiles are stored under the folder Band2Monitor in device's main storage. For every session, you will be prompted a session/subfolder name. All logfiles can then be found under this subfolder (/Band2Monitor/<Subfolder>/). Please refer to shorthand names listed above (GSR, HR...) when looking for a specific logfile.
Format: Every row in a logfile begins with a timestamp (Epoch time) and is delimited by semicolons.
- Download Android Studio: https://developer.android.com/studio/index.html
- Use SDK Manager to download tools and platforms: https://developer.android.com/studio/intro/update.html
- Import Band 2 project into the IDE
- Let Gradle synchronize project dependencies
- Build and run on an emulator or your device