The worst thing about holiday decorations is that while you could leave them up all year, your neighbors probably won’t like you very much for it. Christmas lights on your house are one thing, but as far as Halloween decorations go, [MisterM]’s raven security camera is one of the few exceptions to this rule.
Nevermore will [MisterM] wonder who goes there. As soon as this raven lays its beady red LED eyes on whatever is lurking in the garden, it comes to life with a bit of head swiveling and some random sounds. The bird either goes CAW! or quotes Christopher Lee’s reading of Edgar Allen Poe’s “The Raven”.
Inside this bird’s chest cavity is a Raspberry Pi 2 and standard camera, a servo to swivel the head, and an audio amplifier and speaker. This bird is running MotionEye on top of the Raspi OS so it can run a script whenever it senses motion.
We like that [MisterM] was able to find right-sized bits of plastic to mount the servo in the neck and the horn to the head. It just goes to show that not everything needs a 3D printer, a CNC, or woodworking. Check out the scary demo after the break.
Want to scare the whole neighborhood? Check out the science behind good-looking house projections.
Continue reading “Raspberry Raven Pi Security Camera Does Double Duty”
There are people who buy a cheap sack of candy and dutifully answer the door on Halloween. Then there are people like [Peter] who spend the whole year planning for the next year’s Hollywood-style front yard theatrics.
He added an animatronic raven to his show a few years back. It has been wildly popular and it’s not hard to see why. The bird is well engineered, well built, and the performance is very realistic. [Peter], who is an FX supervisor in the film industry, has posted a build log that takes us through step by step. This creepy performer can move its head up and down, side-to-side, and even rotate at the neck. This all happens while the beak synchronizes with talking. We marvel at the precision machining that was done to make the frame facilitate movement.
The body itself is made of fiberglass covered with feathers. [Peter] covered the completed mechanics with clay in order to sculpt the final body shape. This was used as the mold by covering it with fiberglass release and then fiberglass fabric. This process produced a very light weight and accurate shell with a minimum of effort; something we’ll keep in mind for future projects.
Take a look at a bit of video after the break. You can see the whole show from past years over at [Peter’s] site. We’ll be doing a couple of follow-ups covering his animatronic skeleton (the raven’s partner in crime) as well as the interface he uses to control and sync the voices to stay tuned! Continue reading “Quoth The Raven: Hack Some More”