Arduino is an open-source electronics prototyping platform.
Arduino is a single-board microcontroller to make using electronics in multidisciplinary projects more accessible.
The hardware consists of an open-source hardware board designed around an 8-bit Atmel AVR microcontroller, or a 32-bit Atmel ARM.
The software consists of a standard programming language compiler and a boot loader that executes on the microcontroller.
Arduino boards can be purchased pre-assembled or as do-it-yourself kits.
Hardware design information is available for those who would like to assemble an Arduino by hand.
It was estimated in mid-2011 that over 300,000 official Arduinos had been commercially produced