As the Uno Rev3 only has 14 digital I/O pins and six analog input pins, it's best suited for projects not requiring too many components. Most of the built-in examples in the Arduino IDE software ...

Arduino no longer produces this board. Unfortunately, the more popular boards like the Uno, classic Nano, and Mega 2560 don't support the Debugger feature as they're powered by an AVR microcontroller.

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...