Sure, you could dress your dog up for Halloween in some pre-fab hot dog costume or a little French maid outfit, but what’s the fun in that? Hilarious as it may be, there’s no hack there. [Becky Stern] will help you out of your pet costume rut with the tutorial for her latest creation, laser dog goggles.
First things first: the laser she uses is fairly benign. You can safely stare it down for just under 30 seconds, so your pet should be okay. [Becky] offers other helpful safety suggestions, like covering the delicate battery pack with fabric to avoid scratching damage, and waiting until the adhesives are completely dry before outfitting Rover. But hey, if your dog isn’t into eye wear, don’t force it.
These are based on Doggles brand dog goggles and the Adafruit Trinket. The laser is mounted on a micro servo so that it pivots back and forth, allowing your dog to scan the ground like RoboCop or Terminator. As you might expect, [Becky]’s tutorial includes a comprehensive list of tools and great documentation. Check out her video overview after the break.
Continue reading “Laser Dog Goggles Make Halloween a Nice Night for a Walk”
Happy Halloween from everyone at Hackaday! To help you enjoy the holiday here are a few festive links:
[Mike Kohn] whipped up a set of motion tracking eyeballs to make his decor extra creepy.
There’s not much to this jet-pack costume but the results are pretty amusing.
The eyes on [Tim Butler’s] skeleton prop don’t follow you around the room, but they do use a PIR sensor to light up the skull.
Speaking of skulls, [Tom] is using some real skulls as decorations. He also added lights where the eyeballs should be, but he is using a photoresistor and comparator to turn on some LEDs.
[Clark] built a Mecha Robot Warrior costume for his son. With all of those LED strips we think he’ll be pretty safe when crossing the street!
And finally, [Jesse] added a lot to his prop in order to produce a Sinister Joker. That’s Joker-as-in-cards and not as in Batman. It’s got an IR distance sensor as a trigger, with a motor to move the wrist, lights for the eyes, and a sound shield to give it a disturbing voice.
Yep, we said it. This Halloween decoration goes way overboard… and we love it! Not only does [Shelby Merrick] put on an incredible sound and light show for the neighborhood, but he keeps us happy by posting all the details for the lighting controller he designed. He calls the creation FloodBrain as it’s switching a set of flood lights to achieve the effects seen above. But for the full experience you’ll want to watch the demo videos below as well.
He needed a way to switch twelve RGB flood lights which pull 10 Watts. His controller was designed to communicate with them via RS485, with an AVR Xmega8E5 controlling the system. We like it that he included some images of the manufacturing process, using a stencil for solder paste before placing components for reflow.
The floodlights themselves are also an interesting hack. To get what he wanted at the best price he picked up 10W white LED flood lights for about eight bucks a piece, then swapped out the LED itself for an RGB version (same wattage) using the same heat sink and case.
More often that not we see this type of system controlling Christmas lights. [Shelby] mentions that he did get help from Christmas light controller forum We also think he should have no problem repurposing the controller for that type of application.
Continue reading “Light Controller Goes Overboard for Halloween”
It’s already pretty cool that [Clay] co-owns an Arcade, but he’s really impressed us with his custom-made Splatterhouse cabinet built to get his patrons in the Halloween spirit! A Namco brawler title from 1988, Splatterhouse came in an unadorned and otherwise forgettable cabinet. [Clay] salvaged an old Williams Defender, coating the sides with a cocktail of drywall compound, sand, and paint to achieve a stone texture. He then carved up some pink insulation foam into a tattered “wooden” frame and used it as a monitor bezel. For accents, he fashioned strips of latex to resemble torn flesh and placed them among the boards. The control panel is yet another work of art: [Clay] 3D printed a life-size human femur for the game’s joystick, and converted the buttons to look like eyeballs.
[Clay] decided to go beyond the stunning cosmetics, though, and tapped into the game’s CPU with a custom daughterboard that detects different in-game events and state changes such as player health. An ATMega165 uses four PWM outputs connected to a number of LEDs inside the cabinet and around the monitor bezel to react to the different events. If a player takes damage, red lights flash around the monitor. Inserting a coin or dying in the game causes a different set of LEDs behind the marquee to go nuts.
Check out his detailed project page for more information and see a video overview below. If building a full-scale arcade machine is out of your budget, you can always make a tiny one.
Continue reading “A Killer Arcade Cabinet for Halloween”
Dr. Frankenstein’s laboratory wouldn’t be complete without some electrical sparks. So for [Rick’s] final Halloween DIY hack this year he gives us just that, but with a twist. This time it’s a double helix Jacob’s ladder. The sparks are flying as they twist and turn their way up this unique design, powered by a standard neon sign transformer. If you can get your hands on a 15,000 V 30 mA transformer, you might have just enough time to build one for Halloween.
The build is quite simple. Other than the transformer, you will need a few feet of ¼ inch flexible copper tubing and a piece of ¾ inch PVC pipe. After twisting the copper tubing around the PVC pipe to form the double helix, [Rick] mounts the tubing to a block of wood and removes the PVC form. In his video, which you can watch after the break, [Rick] demonstrates a standard Jacob’s ladder, as well as his double helix design. The double helix version has a much nicer and slower traveling arc even stopping at times.
You don’t want to set this up anyplace someone might touch it as it can be quite deadly or cause burns. [Rick] mentions not to use wood to mount your ladder because the wood will burn as it did during his testing. And do not operate unattended. Otherwise, it adds some spark to your great Halloween fun.
Continue reading “Spark-Up Your Halloween Party with this Double Helix Jacob’s Ladder”
[Dave’s] been working pretty hard on his Arduino driven, LED-lit, magical staff for the past few months, and now it’s finally coming together.
He’s using 6 LED strips that contain 55 LEDs each — at full brightness the staff can suck up an impressive 20A @ 5V! To power it, he’s equipped the staff with 8 NiMH C size batteries (5000mAh @ 1.5V). This works out to about 15-20 minutes of runtime at full power (255, 255, 255, LED values) — to counter this he usually runs a sparkly LED algorithm that lasts much longer. Besides, at full power it’s really quite blinding.
The staff is controlled by an Arduino Uno and currently only has two different modes: random and full brightness. Not to worry though, he’s planning on adding a sound sensor to turn it into an equalizer, a shock sensor to give it a cool ripple effect while walking, and maybe a few other interesting patterns!
Stick around after the break to see the first test video!
Continue reading “LED Magic Staff Just in Time for Halloween!”
[Kyle] has been an avid reader of HaD for a long time. In fact, he was inspired by a Halloween knock box from 4 years ago! He saved the link and finally this year, he went ahead and made his own.
So what is it anyway? Well, as the name implies, when you knock on it, it knocks back. And if you knock on it a special number of times, it’ll play a secret tune… It is a great little item to have at any Halloween event — and kids love it!
Design and function of the box is basically the same as the original, with a few modifications — most notably, swapping out the original PICAXE for an ATtiny85 microcontroller. [Kyle] even managed to find the lego skeleton and chains available on eBay. He’s put together a very thorough blog post on it and shared all the code and schematics — so if you’re looking for a last minute Halloween project, this might be it!
Stick around after the break to see the knocking in action!
Continue reading “Halloween Knock Box”