stanleyhuangyc/ArduinoOBD

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1106 stars · 513 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

An open-source Arduino library and collection of sketches for accessing vehicle OBD-II data via Freematics OBD-II adapter hardware. It provides easy PID-based access to engine and vehicle metrics, plus example data logger projects with OLED/TFT displays and GPS.

Use cases

• read engine RPM and coolant temperature from a car with Arduino
• build an OBD-II data logger for my vehicle
• log vehicle speed and GPS data to an SD card
• make a DIY digital gauge or HUD for my car
• query OBD-II PIDs over UART or I2C from an embedded device
• build a vehicle tracking or telematics prototype

When to choose

• you use Freematics OBD-II adapter hardware with Arduino or ESP32
• you want a simple PID-based API for car diagnostics on embedded platforms
• you are building a DIY vehicle data logger, gauge, or telematics device

When to avoid

• you need to talk to a car's ECU from a PC or phone without Arduino
• you want generic CAN bus tooling rather than OBD-II PID access
• you need a license-permitted codebase, as the repo has no explicit license

Facets

library · maturity maintenance

sdk developer-tools data-visualization embedded-systems hardware iot embedded iot cpp obd-ii vehicle-telemetry arduino-library car-diagnostics data-logging gps-logging automotive

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markdown · JSON · MCP: product_card(name="stanleyhuangyc/ArduinoOBD")