The Subversion source code repository is at svn://svn.jeelabs.org/jeelabs/ (Google Code is no longer used). To check out various libraries, you can use: svn co svn://svn.jeelabs.org/jeelabs/trunk/libraries/Ports svn co svn://svn.jeelabs.org/jeelabs/trunk/libraries/RF12 svn co svn://svn.jeelabs.org/jeelabs/trunk/libraries/RTClib Everything in the above repository is open source, using the MIT-licen