Case Studies

Automotive OBD Device with LoRa and BLE

Automotive OBD Device with LoRa and BLE - Image 1
  • Complete product development
  • HW / FW / Linux System Integration
  • Charging and Firmware upgrade of Custom OBD2 Devices
  • Mechanical / Enclosure Design
  • Contract Manufacturing
Project Summary:

Developed for an automotive solutions company, this device reads car data via the OBD port, transmitting it to a central server using LoRa for on-premises communication and indoor location tracking. It features an STM32F Microcontroller, supports multiple OBD protocols (ISO, J1850, CAN), and includes two BLE radios for device communication and beaconing. A key feature is its pass-through design, allowing other OBD devices to be used simultaneously. The handheld, battery-operated device has an 800 mAh Li-Po battery, chargeable from the OBD port, with a cut-off mechanism to prevent draining the car battery. It also includes an accelerometer to detect car status, a special connector for a Smart OBD charging station for diagnostics and firmware updates, and an integrated LED torch for locating the OBD port in low light.

Important Parts:
  • ST Microelectronics ARMCortex-M0 32-bit RISC MCU.
  • OBDSOL OBD Translator.
  • MultiTech LoRa Module.
  • Raytac BLE Module.
  • ST Microelectronics Accelerometer.
  • Atmel EEPROM.
  • Texas Instruments Li-Po Charger.
Salient Features:
  • Rugged Automotive Product.
  • Multi Radio Design - LoRa, BLE, BLE Beacon.
  • Automotive grade ESD/ EMI / Voltage spike protection.
  • Multiprotocol OBD communication.
  • Integrated LED torchlight.
Qmax Scope of work:
  • Schematics Entry
  • PCB Layout Design
  • PCB Fabrication and Assembly
  • Firmware development
  • Board Bring-up and testing
  • Enclosure Design.
  • Coordination with Mold manufacturer
  • FCC / CE certification
  • Packing Box Design
  • Low volume production
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