The hardware development of Freematics ONE is finalized and first batch of 500pcs has been manufactured and is now being tested. Since many have expressed interest in the new product, we hereby publish some close look pictures and details of it.



  • STM32 based OBD-II solution (CAN BUS, K-line, NMEA parsing)
  • Compatible with Arduino UNO/Bluno (ATmega328p main controller)
  • STM32 and ATmega328p connected by SPI
  • TI CC2540 based BLE & USB connectivity
  • MPU-6050 MEMS module (accelerometer, gyroscope, temperature sensors)
  • Built-in xBee socket for exchangeable wireless communication modules (GSM, WIFI, xBee)
  • SIM800L xBee module with self-popping micro SIM socket
  • Self-popping microSD slot with cover
  • Molex connector for external GPS receiver
  • Enclosure dimensions: 60x48x20mm



  • Powered from OBD-II port (low power consumption)
  • Programmable as an Arduino UNO (sketch uploaded via USB or BLE)
  • Rapid access to OBD-II PIDs (including VIN)
  • Reading and clearing trouble code (DTC)
  • Measuring G-force with accelerometer
  • Measuring battery voltage with built-in voltmeter
  • BLE wireless communication with iOS and Android devices
  • WIFI and cellular network support (by xBee modules)
  • High update rate GPS positioning (by external GPS receiver)
  • microSD data storage up to 32GB
  • Upgrading OBD-II solution firmware via USB


If you are a developer, you may have interest to take a look at the open-source reference firmware (a.k.a sketch) that is still being developed.