On this page. Once you are comfortable with the Arduino software and using the built-in functions, you may want to extend the ability of your Arduino with additional libraries. What are Libraries? Libraries are a collection of code that makes it easy for you to connect to a sensor, display, module, etc. For example, the built-in LiquidCrystal library makes it easy to talk to character LCD displays. There are hundreds of additional libraries available on the Internet for download. The built-in libraries and some of these additional libraries are.
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To use the additional libraries, you will need to install them. How to Install a Library Using the Library Manager To install a new library into your Arduino IDE you can use the Library Manager (available from IDE version 1.6.2).
Open the IDE and click to the 'Sketch' menu and then Include Library Manage Libraries. You can now find the new library available in the Sketch Include Library menu. If you want to add your own library to Library Manager, follow. Importing a.zip Library Libraries are often distributed as a ZIP file or folder. The name of the folder is the name of the library.
Inside the folder will be a.cpp file, a.h file and often a keywords.txt file, examples folder, and other files required by the library. Starting with version 1.0.5, you can install 3rd party libraries in the IDE.
![Library Library](/uploads/1/2/5/4/125410452/873207239.jpg)
Do not unzip the downloaded library, leave it as is. In the Arduino IDE, navigate to Sketch Include Library Add.ZIP Library. At the top of the drop down list, select the option to 'Add.ZIP Library'. Return to the Sketch Include Library menu. You should now see the library at the bottom of the drop-down menu.
It is ready to be used in your sketch. The zip file will have been expanded in the libraries folder in your Arduino sketches directory. NB: the Library will be available to use in sketches, but with older IDE versions examples for the library will not be exposed in the File Examples until after the IDE has restarted. Manual installation When you want to add a library manually, you need to download it as a ZIP file, expand it and put in the proper directory.
The ZIP file contains all you need, including usage examples if the author has provided them. The library manager is designed to install this ZIP file automatically as explained in the former chapter, but there are cases where you may want to perform the installation process manually and put the library in the libraries folder of your sketchbook by yourself. You can find or change the location of your sketchbook folder at File Preferences Sketchbook location. Please note: Arduino libraries are managed in three different places: inside the IDE installation folder, inside the core folder and in the libraries folder inside your sketchbook. The way libraries are chosen during compilation is designed to allow the update of libraries present in the distribution. This means that placing a library in the “libraries” folder in your sketchbook overrides the other libraries versions. The same happens for the libraries present in additional cores installations.
It is also important to note that the version of the library you put in your sketchbook may be lower than the one in the distribution or core folders, nevertheless it will be the one used during compilation. When you select a specific core for your board, the libraries present in the core’s folder are used instead of the same libraries present in the IDE distribution folder. Last, but not least important is the way the Arduino Software (IDE) upgrades itself: all the files in Programs/Arduino (or the folder where you installed the IDE) are deleted and a new folder is created with fresh content. This is why we recommend that you only install libraries to the sketchbook folder so they are not deleted during the Arduino IDE update process. This tutorial based on text by Limor Fried.
Last revision 2017/02/07 by SM The text of the Arduino getting started guide is licensed under a. Code samples in the guide are released into the public domain.