Posted on 29 December 2015 at 05:12 AM
Every time you want to make a new PCB there are some parts not present in the default Eagle library.
Eagle has a good feature that allow to setup a directory where it looks for libraries. Go to Options->Directories, click on the library textbox and browse for a folder.
Put in this folder every custom Eagle library. Here are some of the most used libraries you can use in your projects: