These basic output-only tutorials are excellent starting points ... the site even allows you to browse through projects that only use an Arduino UNO. Another great resource for finding Arduino ...

The Arduino Nano itself is the most basic and oldest ... electronics in general, the Uno is often the recommended option. It's backed up by a massive assortment of tutorials and step-by-step ...

Our testing is based on a piece of Arduino code that turns an Arduino Uno’s onboard light on and off. Controlling actual devices may be a little more complicated, but this code offers a baseline for ...