Arduino has shrunk the UNO R4 with the Arduino Nano R4 board equipped with the same 48 MHz Renesas RA4M1 32-bit Arm ...

The Arduino Zero uses an Atmel ARM Cortex-M0+ for 256kB of Flash and 32k of RAM. The board supports Atmel’s Embedded Debugger, finally giving the smaller Arduino boards debugging support.

On top of the board's simplicity, there are several more reasons why it's highly recommended for beginners. First, it's conveniently included in popular starter kits like the Arduino official ...

Arduino no longer produces this board. Unfortunately, the more popular boards like the Uno, classic Nano, and Mega 2560 don't support the Debugger feature as they're powered by an AVR microcontroller.

Intel just announced at Maker Faire Rome that the first product to use the Curie module is a brand new, low-cost Arduino board called Arduino 101.