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An Arduino is an evaluation kit-like single-board, microcontroller intended for hobbyists by making electronic projects easier and more accessible. The Arduino is an open-source hardware project that use 8-bit to 32-bit processors. The Arduino has a C compiler with a set of standard libraries that provide easy functionality for performing common tasks such as setting up interrupts, reading I/O pins, setting up PWM pins, reading and writing to the EEPROM, and various other services.

Arduino board are an open specification. They can be bought pre-assembled, as a DIY kits, or in individual parts to be assembled by hand.