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LED Marquee Pumpkin Here’s an LED marquee as the mouth of a Jack-o’-lantern which [Mike Skoczen] made. This comes hot on the heels of that playable Tetris Pumpkin. [Thanks Jacob] Arduino-powered robot costume This is a sideways view of the Arduino-powered costume [Dan] and his wife made for their son. It has lights, buttons, a [...]

Tags:  led arduino-powered marquee tetris-pumpkin mike-skoczen jacob dan arduino hackaday hot-on-the-heels hackaday  

[Grenadier] built his very own x-ray machine. He’s no stranger to high voltage – we’ve seen his Jacob’s Ladders and Marx generators. Surely he can handle himself with high voltage and dangerous equipment. With this portable x-ray machine, [Grenadier] has begun overloading Geiger counters. We’re just happy he knows what he’s doing. The key component of [...]

Tags:  grenadier machine voltage jacob marx-generators geiger-counters dangerous-equipment Hardware  

[Matt] entered himself in a pumpkin carving contest this year, even despite the fact that his artistic skills were a bit…lacking. He knew that he had very little chance of winning the contest unless he had a great gimmick to make his creation stand out, so he started brainstorming. [Matt] figured that since his design [...]

Tags:  contest hacks halloween matt jacob artistic-skills pumpkin-carving-contest little-chance classic  

If you’d like to build a Jacob’s ladder, an ignition system for a flamethrower, or for some ungodly reason you need 15 kilovolts for a prop replica or cosplay build, this one is for you. It’s an easy to build high voltage power supply that interfaces with an Arduino. After harvesting a flyback from the [...]

Tags:  flyback arduino voltage jacob high-voltage-power high-voltage-power-supply flyback-transformer hacks  

[Grenadier] has a thing for the high voltage and, as you can see, he’s found multiple ways to build the icon of HV toys - a Jacob’s Ladder. The three look similar, but they use different means of generation the voltages necessary to get a spark to jump through the air. The exhibit on the left uses [...]

Tags:  thing grenadier ladder jacob high-voltage misc hacks  

Two sparks are better than one, a sentiment that was never more blindingly illustrated than with this three-conductor Jacob’s Ladder. The build centers around three-phase power, which uses a trio of alternating current sources sharing the same frequency, but offset by 1/3 from one another. If we’re reading the schematic correctly, [Jimmy Proton] is using [...]

Tags:  phase sentiment ladder jimmy-proton jacob phase-power 3-phase misc hacks  

[Plasanator] adds a bit of safety to his Jacob’s Ladder by housing it in a familiar enclosure. It doesn’t take very many components to make one of these, but to get the high voltage you’ll need some type of coil. He’s using one from the electrical system of an old car, then building around it [...]

Tags:  disk home ladder jacob electrical-system high-voltage floppy-disk misc hacks  

For Halloween [Paul] wanted to build a Jacob’s Ladder without the peril that working with high voltage might bring. He was inspired by a sequencer board for electroluminescent wire and decided to build a Jacob’s Ladder simulator using the glowing material. What he ended up with is quite convincing. Eight segments of EL wire have been mounted [...]

Tags:  wire halloween ladder jacob paul high-voltage peril arduino hacks  

Reader [Jacob] tipped us off about a project the aims to make the final frontier open source. The mission of the Copenhagen Suborbitals is to launch a man into space. What they’re not interested in is turning a profit, carrying hazmat or weapons, or keeping what they learn to themselves. Surprisingly enough, isn’t this the next [...]

Tags:  space hacking profit jacob copenhagen final-frontier hazmat secrecy transportation hacks