Device Overview

The IOSiX OBD-II/CAN Datalogger supports high-speed data acquisition from vehicle data buses.  The device is fully configurable as to what data is recorded and at what rates.  There is also a streaming mode for live vehicle communication (contact IOSiX for details).  A development API is also available, enabling customers to deploy custom code to the device firmware (contact IOSiX for details).  IOSiX can also supply custom firmware development for customers at reasonable rates.

Vehicle protocols

  • 4 dual-wire CAN buses
  • 1 single-wire CAN bus (GMLAN)
  • J1850 VPW and PWM
  • ISO 9141/14230 KWP
  • Proprietary protocols


  • GSM 3G North American or European bands, GSM 2G Quad-Band, or CDMA 2G cellular radio
    • Swappable nanoSIM card
    • Internal antenna
  • WiFi 802.11bgn radio
    • SoftAP and infrastructure capability
    • Internal antenna
  • Bluetooth 4 radio (coming soon)
    • BTLE and BT Classic supported
    • Internal antenna
  • SiRF IV GPS receiver
    • Internal antenna


  • 3-axis MEMS accelerometer
  • Temperature sensor
  • Real-time clock with backup supercapacitor
    • At full charge time backup will last ~6 months
  • Vehicle battery voltage and USB bus voltage


  • Micro-B USB port on device
  • Composite device
    • Mass Storage class
    • CDC class


  • 4, 16, or 64GB eMMC storage
    • Accessible via USB as mass storage device


  • 4V to 30V operating range
  • -30V to 100V input protection
  • 30kV ESD protection on all external pins
  • <100uA sleep current consumption