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 is sold under a Creative Commons Share-Alike (CC-SA) license, so you can make changes to the original Arduino board or how it’s programmed and release it to the public, so long as you ...

Which is where Wide boards come in.” “Does your project need more resources than are available on a Nano, UNO, Leonardo, or even Mega2560 Arduino board? Does it need to run at 3.3 V or 5 V?

Arduino has announced the new UNO R4 board family for prototyping and learning. The new models feature a faster microcontroller, a USB-C connector, improved power, Wi-Fi and Bluetooth LE, and more.