ECU Simulator

About

This tool acts as a dedicated server for processing and integrating vehicle CAN/OBD data with large language models (LLMs) and small language models (SLMs). It establishes a virtual CAN bus environment, simulating Electronic Control Units (ECUs) and streaming various messages, including demo OBD-II responses. Utilizing DBC files for accurate encoding and decoding, it exposes a suite of Model Context Protocol (MCP) tools—such as frame capture, filtering, signal monitoring, and DBC information—over Server-Sent Events (SSE). This enables developers to prototype and interact with automotive data without requiring any physical hardware, providing a flexible platform for AI-driven automotive applications.

Key Features

• 1 GitHub stars
• DBC-driven encoding and decoding for CAN messages via cantools
• Virtual CAN backend (python-can) with optional SocketCAN/vCAN support
• Typer CLI for simulation, server control, frame capture, decoding, and monitoring
• ECU simulator streaming multiple messages and demo OBD-II responses
• MCP server for CAN/OBD data integration with LLM/SLM over SSE

Use Cases

• Developing and testing automotive software and AI integrations without physical CAN hardware
• Prototyping and exploring CAN bus interactions, message decoding, and signal monitoring for educational or development purposes
• Integrating real-time vehicle CAN/OBD data streams into large language models (LLMs) or small language models (SLMs) for analysis and interaction