Mad scientist shrinks Arduino to size of an AA battery Haje Jan Kamps 2:30 PM PDT · April 19, 2016 ...

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 ...