Wouldn't it be cool if you could make a pumpkin
jump out every time people came to the door on Halloween
night? Well, you can, with a basic stamp microcontroller, a park zone stoplight, and a hacked Epson printer. It sounds like an odd combination of materials, but Michael Seppanen teaches us how. Check out his instruction on how to make your pumpkin appear automatically by sensor
Personally, it seems like a lot of work for a result that I'm sure could be easily achieved another way. Still, if you want a good Halloween prank, and live for the thrill of hacking things together, this is probably something you'll enjoy.