Our aim in this short tutorial, is to show you how to set up the Arduino IDE software to run a sketch.
Note: In this tutorial we assume that you have already downloaded, and configured you Arduino IDE software. If not, refer to our "Setting up Arduino IDE software" tutorial.
Open the Arduino IDE software.
Click File> Examples > Basics> Blink
Click upload. Then observe your sketch blink the onboard LED.
Note: you can add a through hole LED to pin13 and ground on the Arduino UNO. The short pin is always ground. This concludes how to upload a sketch... Now you can start updating the code to watch the LED blink faster or slower. This is based on the delay time updated by you in the code.
Update the code. Then upload the sketch, and watch the LED change.