A-Series Sensor

Layout

Technical Specification

General Details

Parameter
Size (PCB only)	25mm x 15mm x 4mm
Size (with case and battery)	32mm x 35mm x 9mm
LED Type	RGB LED
Communication Interface	BLE 5.0, WIFI
Charging Interface	Type-C USB port
Battery Run Time (recording)	4.5 hours
Battery Run Time (standby)	1 week
Support Battery Type	lithium battery (3.7V)

Inertial measurement unit (IMU)

Parameter
Gyro Noise	3.8 mdps/rt-Hz
Gyro Offset Temp Stability	± 20 mdps/degree c
Gyro Range	± 2000 dps
Gyro Resolution	16-bits
Accel Noise	70 ug/rt-Hz
Accel Range	± 16 g
Accel Resolution	16-bits
Max Output Data Rate	8kHz

For more details about the command format please refer to the Inertial measurement unit (IMU) section.

Magnetometer

Parameter
Full Scale	± 30 G (Gauss)
Resolution	20-bits
RMS Noise	2 mG
Max Output Data Rate	1kHz

For more details about the command format please refer to the Magnetometer (MAG) section.

Ambient light sensor (ALS)

Parameter
Max Operation Lux	60000 lux
Response WaveLength	Approximate to human eyes
Gain	Programmable
Integration Time	Programmable

For more details about the command format please refer to the Ambient Light Sensor (ALS) section.

LED Color Meaning

Different LED color on the sensor have following meaning:

Color	Meaning
Green	power up
Blink Red	charging battery
Blink Yellow	BLE advertising
Blink Light Blue	BLE connected
Blink Purple	IMU data streaming

BLE advertising LED will stop in 10 minute if no connection happen. (Only LED is off, BLE advertising will continue until sensor enter wake-on-motion mode.)

The sensor will have different LED blinking speed under charging mode, depend on the battery volume. From fully charged (blinking period 6s) to empty (blinking period 0.15s).

Wake-On-Motion Mode

Sensor will sleep without motion detected for 15 minutes, now it is under wake-on-motion mode. If any motion is detected under wake-on-motion mode, sensor will power up (LED Green ~1s) again return to BLE advertising mode (LED blinking yellow).