1. Download the Arduino Software

Click the link below to start the download of the Arduino software. The .zip file is large, so it may take a few minutes.

Macintosh OSX 10.7+ Download of the Arduino Software

Once the download has completed, look inside your Downloads folder. Double click "Arduino.zip" and the file will expand. Drag the file to the Applications folder. If you receive a prompt saying "Arduino is an application downloaded from the internet, are you sure you want to open it?" click Yes.

When you have the application installed and opened, you should see a window like this:


Did you get the Arduino application opened? Great! Time to download the example code in step two.