OBD-II cable: $50 (This one comes with an Arduino library, so it's easy to program with.) 7-Segment Display: $13 Arduino Protoshield: $10 (To easily mount the display on top of the Arduino.

The Arduino Wire library is a core aspect of Arduino's integrated development environment, or IDE, and is a must-have if you're using sensors or extra microcontrollers in your project. Like ...

[Ricardo] has created an Arduino library to bring the QN8066 to the masses. The chip is rather easy to use – control is handled with a common I2C interface. All the complex parts – Phase ...

This led [Fixkick] to create an OBD2 simulator using a secondhand Ford ECU supplied with fake sensor data from an Arduino to persuade it that a real engine was connected. The write-up is quite a ...