Arduino Uno - The World's Most ... shield compatibility and 5 V power supply of the popular UNO R3, the UNO R4 adds a 32-bit microcontroller with up to 16x the clock speed, ... Keeping the pinout, ...

The Arduino Uno R4 is to have a Renesas RA4M1 32-bit Arm Cortex-M4 microcontroller, and there are “no plans to discontinue the popular Uno R3” , according to Arduino, which estimates that R4 will ...

In the press statement accompanying the launch, Massimo Banzi, co-founder and chairman at Arduino, said that the UNO R4 represents a new chapter to the UNO story, commenting, “With the ever-changing ...