There are hundreds of libraries that you can import from the Arduino website using the Arduino Library Manager. You can also import libraries from other websites; however, these libraries may not conform to proper coding standards and therefore may not be easy to incorporate into your diagrams.
To use the Library Manager to install Arduino libraries
1. Go to C:\Program Files (x86)\Arduino\libraries and double-click Arduino.exe to start the Arduino IDE.
2. Click on Sketch > Include Library > Manage Libraries.
3. In the Library Manager Search box, enter the full or partial name of the library you are searching for.
Libraries that match the name are displayed in the lower window.
4. Select the library.
5. Click on Install. For some libraries, you will need to select the version before you can install it.
By default, the library is downloaded to C:\Users\<user-name>\My Documents\Arduino\libraries.
The library can now be set up and used in a diagram.