Community members develop tools and write open source instructions as research notes, wiki pages, printable guides, and videos, so others know how to use these tools, and many have started local groups in their area. We also provide support through our mailing lists. This works because everyone both learns from and helps each other out, and we all contribute to the growing body of documentation as we go.
Join now to take part!This community began as the Grassroots Mapping project, an effort to produce Do-It-Yourself satellite imagery with balloons and kites, most notably during the 2010 BP oil spill. We are now broadening our scope to explore new inexpensive and community-led means to measure and explore environmental and social issues.
For more details of the Public Laboratory, go to http://publiclaboratory.org/home
Have a look over at Make magazine for a one of their projects using a Raspberry Pi for Aerial mapping. http://blog.makezine.com/2012/11/08/raspberry-pi-in-the-sky/