We see a lot of Halloween projects attempt to scare people. Many of them work with the element of surprise, jumping or flashing lights when triggered. We’ve noticed though, people have come to expect those things. This project is a real sleeper. No one expects a couple car horns to blare in their face  when they push the pumpkin’s nose. We know it would make us jump. You can see it in action as well as get the entire circuit from his site. We doubt his neighbors will find it as amusing as we do.

[via Hacked Gadgets]

The fantastic Creatrope blog has a great article on quickly assembling animatronic Halloween gags using salvaged electric motors, pvc pipe, and “grid beam” construction.

Grid beam is a prototyping and building medium that’s like a giant hippie Erector set. You can’t buy grid beam, but with a drill press, a jig, and some square stock you can create your own unlimited supply. It’s ideal for “sketching” and temporary constructions like these Halloween props. After use, everything can be dismantled, stored flat, and later reused for the next [Herbie Hancock] music video creative project. Looks like fun!

The article wraps up with some valuable pointers on getting started with grid beam and where to acquire parts.