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

The title of the smallest Arduino board doesn't go to just a single board — it actually belongs to an entire family: the Nano family. This set of boards comes in the smallest form factor Arduino ...

The Pico, just like the Arduino boards, is a microcontroller, and a tiny one at that. In fact, it's only slightly larger than Arduino's smallest board, the Nano, at 51 mm x 21 mm.