"Parts one and two talked about some of the cool features you
can enable on your camera by installing the Canon Hack Development
Kit. But the most powerful CHDK feature is the scripting
"Scripting is how I first found out about CHDK -- at a workshop
at WhereCamp. Jeffrey Warren of Grassroots Mapping demonstrated
balloon aerial mapping using a cheap Canon camera and materials
like a cut-up soda bottle, string, a garbage bag, tape, and open
source photo stitching software.
"It's a phenomenally cool project. Grassroots Mapping folk have
traveled all over the world: they've helped villagers in Peru and
El Salvador make maps to prove ownership of their homes, and
charted the spread of the BP oil spill in the Gulf of Mexico.
"Lots of fun, but how does this tie in to CHDK? When your camera
is 500 feet up hanging from a balloon, how do you tell it when to
shoot photos? You could build some kind of radio-control gizmo, but
that's expensive and complicated. All you really need is a script
to shoot at regular intervals -- say, every 10 seconds."
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