OpenTag is an Arduino-compatible open-source inertial measurement unit (IMU) for recording high speed motion sensor data to a removable microSD memory card. OpenTag uses a rechargeable lithium polymer battery so you can reuse it unlike other data storage tags.
- 3D Accelerometer
- 3D Magnetometer
- 3D Gyroscope
- Pressure (depth)
- Dive behavior
- Pitch, roll, yaw
- Bioenergetics: ODBA and VDBA
- Fluke rate
- Feeding behavior
The rechargeable lithium battery will run OpenTag continuously for 7 days with all sensors. Longer run times are possible. Run 1 month with the accelerometer and magnetometer sampling at 10 Hz and the gyroscope turned off.
Sampling rates are set from the OpenTag Windows software and loaded from a script file on the memory card. IMU sensors can run at 100 Hz simultaneously. Higher sample rates are possible on individual sensors.
OpenTag integrates a small aluminum housing with an o-ring to allow access to the memory card, recharge the battery, and the power switch.
Depth rating: 300 m
Dimensions: 10.5 x 4.7 x 2.2 cm
Weight: 110 g in air
Power: Rechargeable lithium polymer battery
3D Gyroscope: Measures rotational velocity. Use with accelerometer and magnetometer for accurate measurement of 3D motion.
3D Accelerometer: Digital accelerometer for motion and tilt sensing
3D Magnetometer: Measures magnetic field strength for compass orientation