Getting Started
Last revision 2026/01/07
The adapter stays plugged into the OBD port usually located under the steering column or slightly to the left of it.
A cable comes out from the adapter and splits into one 4-pin connector two 2-pin connectors, including power lines (VCC/GND)and data lines ( SDA/SCL). They can be connected to Arduino with onboard breakout pins or breakout shield. Your Arduino device will look tidy in car with only one cable.
| OBD Adapter Side | Pin Name | Arduino Main Controller Side | Pin Name |
|---|---|---|---|
| Red | VCC | Power Pin | VCC |
| Black | GND | Ground Pin | GND |
| Blue | SDA | I2C Data Pin | SDA |
| Yellow | SCL | I2C Clock Pin | SCL |
Software Requirements
- Arduino IDE
- Download and install the ArduinoOBD GithubLibrary. (About how to install the library?)
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