essentials.md

All you need to know to get started with your new Arduino board. This library allows you to communicate with I2C / TWI devices. The SPI library allows you to communicate with SPI devices, with the Arduino as the controller device. The Servo library allows an Arduino board to control RC (hobby) servo motors. Built-in Examples are sketches included in the Arduino IDE and demonstrate all basic Arduino commands. Discover interesting articles, principles and techniques related to the Arduino ecosystem. Arduino programming language can be divided in three main parts: functions, values (variables and constants), and structure.