The obstacle avoidance is partially done with IR/Sonar and the camera. I'm in the process right now of putting a Quad core CPU on it cause the Atom is a BIT sluggish
, but I'm having a hard time finding a mini-ITX board capable of running a Quad core. I may have to go with a Core 2 Duo, but with a Quad or i7 extreme it will be much much faster.
That way I'll have stereo vision and with pan and tilt to make it more accurate. Object following is purely achived with the camera tho, along with distinguishing between solid obstacles and grass and smaller branches.
You can see another example on my site http://www.rotoconcept.com/Projects.html
Plus the Web cam I'm using right isn't exactly very hightech. I got it for $20 in tigerdirect 2 years ago so there is certainly room for improvement but pointless without a strong processor.
I'll have a few more vids posted tomorrow. Right now I'm working on GPS fail-safe. I want it to be able to come back to the starting point if the GPS goes haywire while realying only on visual aid.
BTW in the vid you see a part where it's thinking about crossing between the two concrete barriers. It takes a while with the Atom. When I simulate in on my i7 extreme CPU in my desktop, it's done in about a second instead of 15
Stay tuned for more videos.
As you can see on the short clip I attached, things don't always go too smooth. Now I have the laptop properly secured.... I gotta say tho that in the 5 hours of runtime I accumulated to date, this was the only glitch and it didn't even damae anything tho I was worried about the HDD but it survived