The Arduino microcontroller is used in art and design as an open source programmable tool to create interactive works. It can drive motors, LEDs, sensors and other components. Microcontrollers are small computing systems used for low power and low memory purposes. A microcontroller consists of a microchip on a circuit board with read-write capabilities, memory, inputs and outputs. While microcontrollers have had a presence in the arts for decades, the Arduino microcontroller is among the first microcontrollers specifically designed for artists and designers. The Arduino microcontroller allows artists and designers to execute electronic-incorporated works without knowing the internals of the hardware or software. Artists and designers have been influential in the evolution of the Arduino microcontroller since its birth. The Arduino microcontroller gives artists and designers the ability to use and modify computational hardware easily and inexpensively. Due to new tools such as these and the Arduino microcontroller, artists and designers are capable of completing tasks traditionally completed by electrical engineers.... Thanks to the Arduino's usable design, users spend less time figuring out the inner workings and more time experimenting and discovering how it can be used in different environments or scenarios. The Arduino community also helps inspire other Arduino users. This book gives insights from from interviews with thirty-seven Arduino experts and community members conducted as part of the author's doctoral research. {adapted from Intro]