Keeping the pinout, voltage and form factor unchanged from the UNO R3 ensures maximum hardware and electrical compatibility with existing shields and projects while allowing the UNO R4 boards to ...

The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.

Arduino, the 15-year-old startup behind the eponymous open source microcontroller, launched two new products today at Maker Faire Bay Area 2018: Uno WiFi Rev 2, the first Arduino development board ...