Plus, the Arm® Cortex®-M4 core features ... allowing easy upgrades for projects made with UNO R3 or Leonardo. Requests from the Arduino community see the USB port upgraded to USB-C® and the ...

(Source: Arduino) In the launch briefing, Arduino emphasized that the UNO R3 has already sold 10 million boards and ... Then there are built in peripherals, hardware acceleration, plus is a debugging ...

Then, an Arduino board might be ... it's still slightly cheaper than the R3 at $27.50. One of the most significant differences between the classic Rev3 and Uno's more recent iteration, the R4 ...