Keep Those Pesky Varmints Away

This is just so cool! I can see one of these being used to keep the varmints away from trash cans, vegetable gardens, and peaceful Tea party protests.

This video shows the basic construction:

This gives a demo of full auto mode:

And this video demos the single shot mode:

This obviously appeals to the tech geek part of me. You can even find build instructions and a parts list here!