Build Madison is an event being hosted by Sector 67 on Nov 23 and 24, starting at 2pm and going all night to 2pm the next day. It's for general DIY projects, but apparently tends towards the programming end of things. Registration is free.
I'm planning on going and working on enhancements to UAV::Pilot. I haven't decided on the specifics yet, but I'm thinking it'll be either porting the video output to OpenGL, image recognition, or 3D reconstruction. So if anybody is interested in that sort of thing, or wants to try some other project of your own, come on down.