Honestly, I don't understand the request for an "SDK", unlike other widget systems that have unique, custom environments, such as Dashboard, Konfabulator, Google Gadgets, etc., our widgets are simply Flash movies.

You can walk into any reasonably stocked bookstore and find dozens of books of how to create Flash movies, there are thousands of tutorials on the web, and even sites with tens of thousands of source code examples that will run with little or no modification on the device.  Our wiki basically documents the extensions we've made to the base FlashLite functionality.

For instance, this one site alone currently lists 1213 Flash tutorials and several thousand Flash 8 examples.

This is one reason why we picked Flash in the first place - to leverage the maturity of the Flash environment, in tools both Open and commercial), documentation, and examples.  We know we don't have the resources (or desire) to try and convince people to adopt "yet-another-new-widget-system", and have to educate people from scratch - there are already millions of Flash developers out there, and tons of resources out there for anyone that wants to learn.

We've posted the source code examples for several broad categories - in all but one case (the pendulum), there's *nothing* in the source that has any particular connection to the chumby device.  Our examples are simply drops in the vast ocean of source material that's available to a widget developer who's willing to spend a few quality minutes with Google.