Arduino Uno R3 microcontroller board

Arduino is an open-source electronics platform based on flexible, easy-to-use hardware and software. The Arduino Uno R3 is a microcontroller board based on the ATmega328P. It was originally developed at the Interaction Design Institute Ivrea in Italy. The brand name itself is derived from a bar in Ivrea, where the founders used to meet.

Today, official Arduino boards are primarily manufactured in Italy, though open-source designs mean that numerous clones are produced worldwide independently. The brand is currently managed by Arduino S.r.l. following a past legal consolidation of its original founding entities. It remains a cornerstone of the global maker and STEM education movement.