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MicroOBD 200 OBD-II Interpreter Module DIP-24 UART, ELM327 Compatible

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microOBD 200 is a quick and easy way to add OBD support to any embedded project. It is a complete OBD-II to UART interface in a DIP-24 form factor, designed for in-vehicle applications. microOBD 200 uses an enhanced version of the popular ELM327 command set, supports UART speeds up to 10 Mbps and is firmware upgradeable.

Key Features

  • Supports all legislated OBD-II protocols and J1939 (heavily duty vehicles)
  • Fully compatible with the ELM327 command set
  • Extended "ST" command set for access to advanced functionality not available in the ELM327
  • UART interface
  • Bootloader for easy firmware upgrades
  • Large memory buffer
  • Solid automatic protocol detection algorithm, connects to more vehicles reliably
  • Smart keep-alive algorithm helps ensure a stable connection on ISO and KWP vehicles
  • Dimensions: 1.3" x 0.59"

Supported OBD Protocols

  • SAE J1850 PWM
  • SAE J1850 VPW
  • SAE J1939
  • ISO 9141-2
  • ISO 14230-4 (KWP 2000)
  • ISO 15765-4 (CAN)
  • ISO 11898 (raw CAN)

Typical Applications

  • Fleet management and tracking applications
  • OBD data loggers
  • Digital dashboards
  • Automotive diagnostic scan tools and code readers
  • Academic projects


microOBD 200 Basic Reference Design
microOBD 200 Development Board Schematic
microOBD 200 Pinout
microOBD 200 Product Brief
STN11xx Datasheet
STN11xx PowerSave Functionality
Firmware Updates

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2415 Foster Avenue Baltimore, MD 21224 United States

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