Product name |
Kivi |
Pressure sensor |
MS5837-2BA (TE Connectivity, Switzerland) |
|
Range 10...2000 mbar |
Inertial Measurement Unit (IMU) |
BMX160 (Bosch Sensortech, Germany) |
|
Accelerometer range ±16g |
|
Gyroscope range 2000°/s |
|
Magnetometer range ±2500µT |
High-g Accelerometer |
H3LIS331DL (STMicroelectronics, Switzerland) |
|
Acceleration range ±400g |
Microcontroller |
ARM® Cortex®-M0+ based ATSAMD21G18 @ 48MHz (Microchip Technology Inc., USA) |
Dimensions |
Diameter of the sphere = 55mm; 80mm x 56mm x 63mm (length x height x width) for the Ellipsoid |
Weight |
Sphere: 175±5 g; Ellipsoid: 330±5 g |
Supply voltage |
+3.3v with USB charging |
Battery technology |
rechargeable Lithium-Polymer (charging time of 60 minutes at 20 C) |
Battery lifetime |
6h continuous logging at full charge (water temperature of 20 C) |
Battery charging time |
1h (at 20 C) |
Storage interface |
SD card |
Storage capacity |
8 GB |
Communication interfaces |
micro USB connector, USB 2.0 |
Data logging rate |
100 Hz for IMU and pressure sensor, 1000 Hz for high-G accelerometer |
Sensor output variables |
total water pressure (mbar), linear acceleration (m/s2), rate of rotation (deg/s) and magnetic field intensity (mT) |
Other output variables |
time stamp in ms, battery voltage |
Temperature range |
-40C ~ 85C (-40F ~ 185F) |