With ten days to go, the LIDAR-Lite laser rangefinder project is just $5,000 from its crowdfunding goal (it's 91% funded). Now's the time to back it and put them over the top!
I love this project (I've backed it) and we're integrating it into the APM code. Along with using it for terrain following with copters (it's less noisy than sonar), we're optimistic that it will help with precision autolanding with planes, by providing precise altitude date under 10m so the aircraft can flare at exactly the right moment. We're going to fly an early prototype with APM:Plane and datalog the results; if that's successful, we'll put it into production and give it full support.