Alluvial_BTS system.

System Specifications:

Alluvial_BTS Integrated Sensor

Description: Bluetooth connected, battery powered Motion Sensor with Bluetooth to UART and I2C bus bridge capabilities.
Board: 1.85” x 0.85”.
Package with Battery: 2.0” x 1.0” x 0.55”.
Charging: Micro USB, 5V.
Battery: Li-Ion, 3.7V, 150mAh.
Time of operation on battery power: 2 hours at full data acquisition and transfer speed.


  • BT Classic for System Commands, and Data transfer.
  • Serial UART for Bluetooth Configuration.
  • UART cable replacement over Bluetooth. (BT-to-UART bridge)
  • System programming interface for embedded microprocessor(internal factory use).
  • USB for Bootloader and optional communication (optional).
  • I2C Bus, Auxiliary System Management header (BT-to-I2C bridge).

Integrated functions:

  • 6-Axis of freedom (6DOF) dynamic sensor. 16 bit resolution.
    • 3-Axis Accelerometer: +/-4g, +/-8g, +/-16g, +/-32g range.
    • 3-Axis Gyroscope:  +/-500d/sec. +/-1000d/sec, +/-2000d/sec, +/-4000d/sec.
    • Temperature sensor
  • Battery status.
  • Charge connect status.

Communication API:

Communication API for 6DOF sensor:

  • Sensitivity setup.
  • Data acquisition sample rate setup.
  • Data acquisition sample content setup.
  • Single sample/Continuous sampling, Start/Stop.

Communication API for Auxiliary I2C Bus:

  • Complex command
    • Device address
    • Write Payload
    • Read Payload, packet on demand.
    • Read Payload, packet stream. Timer based, 200 sample/sec.

Android/Windows Applications for control, communication and data acquisition and display.

Application source code under licensing agreement.