SparkFun OBD-II UART
SparkFun OBD-II UART
SKU: BOB-078 - Mfg Part Number: WIG-09555
This board allows you to interface with your car’s OBD-II bus. It provides you a serial interface using the ELM327 command set and supports all major OBD-II standards such as CANBUS and JBUS. The DB9 connector mates with our DB9 to OBD-II cable.
On-Board Diagnostics, Second Generation (OBD-II) is a set of standards for implementing a computer based system to control emissions from vehicles. It was first introduced in the United States in 1994, and became a requirement on all 1996 and newer US vehicles. Other countries, including Canada, parts of the European Union, Japan, Australia, and Brazil adopted similar legislation. A large portion of the modern vehicle fleet supports OBD-II or one of its regional flavors.
Among other things, OBD-II requires that each compliant vehicle be equipped with a standard diagnostic connector (DLC) and describes a standard way of communicating with the vehicle’s computer, also known as the ECU (Electronic Control Unit). A wealth of information can be obtained by tapping into the OBD bus, including the status of the malfunction indicator light (MIL), diagnostic trouble codes (DTCs), inspection and maintenance (I/M) information, freeze frames, VIN, hundreds of real-time parameters, and more.
STN1110 is an OBD to UART interpreter that can be used to convert messages between any of the OBD-II protocols currently in use, and UART. It is fully compatible with the de facto industry standard ELM327 command set. Based on a 16-bit processor core, the STN1110 offers more features and better performance than any other ELM327 compatible IC.
- Fully compatible with the ELM327 AT command set
- UART interface (baud rates from 38 bps to 10 Mbps)
- Support for all legislated OBD II protocols
- Support for SAE J1939 OBD protocol
- Large memory buffer
- Extended ST command set
- Secure bootloader for easy firmware updates
- Support for non-legislated OBD protocols
- Superior automatic protocol detection algorithm
- Voltage input for battery monitoring
OBD-II UART: https://learn.sparkfun.com/tutorials/obd-ii-uart-hookup-guide
OBD-II UART: https://learn.sparkfun.com/tutorials/getting-started-with-obd-ii
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