However, because the R4 WiFi still comes in the same form factor as the Uno Rev3, it remains compatible with existing hardware (e.g., shields, sensors) originally designed for the Rev3.

The Uno Rev3, is a great beginner board as it's included in many starter kits. It's also complemented with a host of online resources that even without the official Projects Book from Arduino, you ...

Unboxing the UNO Mini Board Even though the Arduino UNO Mini Limited Edition is about four times as small as a regular Arduino UNO Rev3 board, it is 100% software compatible as it is equipped with the ...