I've been playing with ArduPlane for quite a while and have finally got to the point where I can make it do something useful. I've been inspired by others on this site to use it for aerial photography to make 3D maps and the like.
I have an ST Models Discovery as the airframe (awesome platform for Arduplane by the way) and have made my own camera mount out of plywood for the bottom. It has one servo for roll stabilisation using CHAN 8 on the autopilot to keep the camera pointing down. It's basic but works pretty well (see pics)
Last weekend I flew over a small island on the river near my house. I managed to get 155 photos in around 10 mins and produce quite a reasonable 3d surface using hypr3d. I gotta say that these guys rock with great personal service and it's all free! They did struggle a bit with that many photos, but you can see the result below
I'm not in the same league as some of the other makers of aerial maps on this site, and have no idea of the accuracy of this map, but was pretty happy with the early results and would like to work on this more to get better results.
my setup is
Airframe - ST Models Discovery Trainer with stock motor and 30A ESC
Arduplane 2.24 with Magnetometer, airspeed kit and xbee - a few lines of code added to output roll stabilisation
Home made camera mount with roll stabiliser
Canon IXUS 50 camera 5MP (this is a very light P&S camera) running CHDK
Spektrum DX 7 2.4GHz tx/rx
2200 mAh 3s motor battery + 1000 mAh 2s battery to power all other electronics via a UBEC (the stock BEC is too small)
I used Mark Willis's aerial coverage spreadsheet to calculate the waypoints before launch and it seemed to produce a good result.You can see the waypoint in the following screenshot