C.14. SERIAL COMMUNICATION

As you saw in Chapter 5, you can communicate with devices over the USB port using a serial communication protocol. Here are the serial functions.

C.14.1. Serial.begin(speed)

Prepares Arduino to begin sending and receiving serial data. You'll generally use 9600 bits per second (bps) with the Arduino IDE serial monitor, but other speeds are available, usually no more than 115,200 bps.