OBD to JSON Relay (ELM327)

This program reads OBD-II / EOBD values from an ELM327 chip (widely available) and makes them available through an HTTP server, formatted as a JSON object. It is great for a web overlay on OBS Studio.

News:

• Oct 2018: Added high-performance WebSocket support

Features

• Designed for high frequency OBD readings
• Customizable sequence of OBD readings
• Automatic recover from most possible communication errors
• Allows any supported serial port baudrate (AT BRD command)
• Configuration is live-refreshed (no restart needed)
• Possibility to run multiple HTTP servers for better performance
• Nice console output to easily debug problems
• Optional CSV logging on updated output data

Requirements

• An OBD scanner featuring an ELM327 / ELM329 chip (preferably connected through bare RS-232 or USB converter)
• Python 3.6 or greater, extended to Python 3.4.4
• pySerial 3.0.1 or greater
• An OS supported by pySerial

Instructions

1. Install Python3.
2. Install pySerial.
3. Edit the files parameters.py and sequenceELM327.py in the sub-directory config.
4. When you are ready to start, run main.py.

Support

You can open an issue when you have a question, or you can join my Discord server Yvon à bord ! where you are very welcome, or see my contact details on my GitHub profile.