This project is an autonomous blimp with surprisingly simple circuitry for controlling it. Autonomous blimps are quite a hassle to make because electronics (especially batteries) can start to weigh a lot very quickly. All schematics and a few videos are there waiting for you.
PyroFactor: 
February 27th, 2009 at 5:52 pm
I found your blog on google and read a few of your other posts. I just added you to my Google News Reader. Keep up the good work. Look forward to reading more from you in the future.