Most of us are familiar with the Arduino Uno, a starting place for electronics projects since 2010. But what if the Arduino Uno was released in 1980? You’d probably get something like ...

The 16u2 is normally used as the Arduino Uno’s USB interface ... [Damian] caps off this incredible project by booting his new computer, loading a Mandelbrot set program from cassette ...

However, while the Uno is a helpful board for your beginner projects, it still has its limitations, so you can't just use it for every one of the Arduino DIY devices you plan on making.

“Uno R4 WiFi includes an error-catching mechanism that detects run-time crashes and provides detailed explanations and hints about the code line causing the crash,” according to Arduino – Electronics ...

The Uno also has a limited number of pins, making it difficult to work with when the project requires plenty of input and output components. However, these two areas are where the Arduino Mega shines.

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 ...