The initial goals for OpenSail are quite modest: given a wind direction and velocity from the One-Wire weather kit, and boat speed and direction from a GPS via serial/NMEA output, calculate and display the apparent and true wind speed. Later, we can add features like wind tracking, performance vs. polar plots, layline tack alerts, lifts, etc.
I spent some time poking into libvgl for graphics output, but that would limit it's portability. Since I'll probably run it on my VAIO, I think I'll stick with X for output. A friend at work suggested writing it in GTK-, since that will be good experience. I'll look into it more this week while I'm off work.
I wish I could afford to just do this full time.
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!