Open the Arduino software and paste the Arduino code (the text in the box near the bottom of the post) into a new sketch. Click Sketch > Verify / Compile to make sure the code is properly in there.

The readability of your code can make the difference between your project being a joy to work on, or an absolute headache. This goes double when collaborating with others. Having easily parsed code… ...

To upload the code on Arduino UNO, click on Sketch > Upload or you can press Ctrl + U on the keyboard. ... Also read: Single Board Computer: Raspberry Pi vs Beagalebone vs Arduino.