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--- arduino:libraryinstall [2010/02/11 18:18]
ladyada
+++ arduino:libraryinstall [2012/05/11 21:29]
ladyada [How to install libraries]
@@ Line 26: / Line 26: @@
-Two optional files you may see are **keywords.txt** (this is a hints file to tell the Arduino IDE how to colorize your sketch and **Examples** folder, which may have some handy test-sketches. These will show up under the  File->Examples->Library dropdown
+Two optional files you may see are **keywords.txt** (this is a hints file to tell the Arduino IDE how to colorize your sketch and **examples** folder, which may have some handy test-sketches. These will show up under the  File->Examples->Library dropdown
 {{http://www.ladyada.net/images/arduino/examplelibdropdown.gif}}
+==== Its important to remember! ====
+The structure of the library folder is very important! The **.c** and **.h** files must be in the 'lowest level' of folders. For example, you cant have **Arduino/libraries/WaveHC/WaveHC/file.c** or **Arduino/libraries/MyLibraries/WaveHC/file.c** - it must be **Arduino/libraries/WaveHC/file.c**
+===== How to install libraries =====
+In Arduino v16 and earlier, libraries were stored in the **ArduinoInstallDirectory/hardware/libraries** folder, which also contained all the built-in libraries (like Wire and Serial).
+In v17 and up, the user libraries are now stored in the **ArduinoSketchDirectory/libraries** folder. You may need to make the **libraries** sub-folder the first time. However, the good thing about this is you wont have to move & reinstall your libraries every time you upgrade the software.
+For example, here is how it looks when NewSoftSerial is installed in Windows (of course your username will be different)
+{{http://www.ladyada.net/images/arduino/nsslibrarypath.gif}}
+On a Mac, your arduino sketch folder is likely going to be called **Documents/arduino** so create a NEW FOLDER inside that called **libraries** and place the uncompressed library folder inside of that.
+Check that the **Documents/arduino/libraries/MyNewLibary** folder contains the **.cpp** and **.h** files
+After you're done, restart the Arduino IDE

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