Type: Linear Resonant Actuator (LRA) vibration
motor
Features: Multi-pattern vibrations to signal
success, errors, and give feedback to the user
Photoplethysm
o-
graphy (PPG)
Sensor
Type: Custom-built by Empatica (multi-channel,
multi-wavelengths)
Channels: 4 acquisition channels (via 8
photodiodes)
Wavelengths: Red, Infra-Red, Green via 9 LEDs
Sampling Rate: 26 Hz – 208 Hz
Type: Digital temperature sensor (Texas
Instruments TMP117M)
Range: 0 - 50°C
Resolution: 0.01ºC
Accuracy: ± 0.1ºC within 30.0ºC - 45.0ºC range
(medical application calibration)
Sampling Rate: 1 Hz - 4 Hz
Accelerometer
and Gyroscope
Sensor
Type: High precision 3D
microelectromechanical accelerometer and
gyroscope
Range: ±16g, ±2000 dps
Resolution: 16bit (0.488mg/LSB, 70mdps/LSB)
Accuracy Accelerometer: ±0.01%/°C,
110μg/√Hz
Accuracy Gyroscope: ±1% on sensitivity,
±0.007%/°C, 3.8mdps/√Hz
Sampling Rate: 26 Hz – 208 Hz
Electrodermal
Activity (EDA)
Sensor
Type: Custom-built by Empatica (ventral side
electrodes embedded in the band)
Range: 0.01 μSiemens – 100 μSiemens
Resolution: 1 digit ~ 55 pSiemens
Sampling Rate: 1 - 4 Hz
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