ClaudeMarais/Simple_OBD2_for_AlfaRomeoGiulia：这是一个简单的Arduino项目，展示如何使用ESP32-C

项目介绍

ClaudeMarais/Simple_OBD2_for_AlfaRomeoGiulia 是一个托管在 GitHub 上的开源项目，主要使用 C++ 编写，采用 Other 许可证，目前获得 20 个 Star、2 次 Fork。

仓库全名: ClaudeMarais/Simple_OBD2_for_AlfaRomeoGiulia

README 摘要

Simple OBD2 for Alfa Romeo Giulia with ESP32-C3 A simple Arduino project to show how to communicate with your car's OBD2 port using an ESP32-C3 and SN65HVD230 CAN bus transceiver, using ESP32 TWAI (Two-Wire Automotive Interface) NOTE: It's fun to tinker with your car, but there is always a chance to mess things up. I won't be liable if for some reason you damage your car. NOTE: The CAN IDs and PIDs used in this app…

完整内容见 GitHub 原始 README 或本页。

常见问题

Simple_OBD2_for_AlfaRomeoGiulia 用什么语言开发？

主要使用 C++ 编写，采用 Other 许可证，目前有 20 个 Star。

Simple_OBD2_for_AlfaRomeoGiulia 可以免费商用吗？

仓库标注的许可证为 Other，商用前请先阅读仓库 LICENSE 文件确认授权范围。

如何获取 Simple_OBD2_for_AlfaRomeoGiulia 的源码？

可以直接克隆仓库：git clone https://github.com/ClaudeMarais/Simple_OBD2_for_AlfaRomeoGiulia.git，默认分支为 main；安装与运行步骤见仓库 README。

Simple_OBD2_for_AlfaRomeoGiulia 最近还在维护吗？

仓库最近一次更新为 2025年5月12日，当前没有未关闭的 Issue；Star 数为 20，可作为社区活跃度的参考。

关于

GitHub 原始描述（英文）

A simple Arduino project to show how to communicate with your car's OBD2 port using an ESP32-C3 and SN65HVD230 CAN bus transceiver, using ESP32 TWAI (Two-Wire Automotive Interface)

alfaromeo arduino can car esp32-c3 esp32c3 obd2 oil pid rpm sn65hvd230 twai xiao-esp32-c3

Other
20 Stars
2 Forks
4 Watching

描述取自 GitHub 官方 API，保持仓库作者书写的原文。

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GitHub

语言占比

C++

贡献者

ClaudeMarais

Simple OBD2 for Alfa Romeo Giulia with ESP32-C3

A simple Arduino project to show how to communicate with your car’s OBD2 port using an ESP32-C3 and SN65HVD230 CAN bus transceiver, using ESP32 TWAI (Two-Wire Automotive Interface)

NOTE: It’s fun to tinker with your car, but there is always a chance to mess things up. I won’t be liable if for some reason you damage your car.

NOTE: The CAN IDs and PIDs used in this app specifically works with a 2019 Alfa Romeo Giulia 2.0L (Petrol). It’s highly unlikely that the same PIDs will work with another car, you’ll have to research what PIDs work with your own car.

A big thank you to the Alfisti community for reverse enginering some of these PIDs!

Some tips:

Consider connecting your car to a battery charger while experimenting. It’s highly likely that you’ll spend several hours in your car while the battery is being drained.
Diagrams of OBD2 pins are normally shown for the female connector in your car. Don’t forget that those pins are in swapped/mirrored positions on the male connector.
The OBD2 connector has an “always on” 12V pin. Make sure the wire connecting to that pin on your male connector isn’t exposed so that it cannot touch other wires!
I tried multiple pins on the ESP32-C3 to connect to the SN65HVD230, but only D4/D5 worked for me. Coincidentally these are also the SDA/SCL pins.
Check if your car has an OBD2 Security Gateway (SGW). If so, you need to install a SGW Bypass module before you to send/receive OBD2 frames to your car.

Hardware:

XIAO ESP32-C3
SN65HVD230 CAN bus tranceiver

Arduino library used:

ESP32-TWAI-CAN found here: https://github.com/handmade0octopus/ESP32-TWAI-CAN

The following information is very helpful to understand how OBD2 uses the CAN bus for communication: https://www.csselectronics.com/pages/obd2-explained-simple-intro

Hardware

Setup

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Simple_OBD2_for_AlfaRomeoGiulia