A perl script running on the iPhone will then send the command to the Arduino. When it receives the start command, the Arduino will ground the wire to the remote start and fire up the car.

This Arduino code basically based on serial communication concept. When the microcontroller receives a serial data, then it will perform a specific task pre-programmed by the user. For example when ...

The Arduino code tells us that the valves will be opened as long as the remote up/down channel is above/under given values.

An Arduino controls the motor and the steering servos, receiving its commands wirelessly via a Bluetooth add-on.