Hackaday Links: September 29, 2013

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We would be remiss if we didn’t mention that all of SparkFun’s open source hardware is now on Upverter.

Not wanting to tie up an iPad as a mini-gaming cabinet [Hartmut] hacked an Arcadi cabinet to use EUzebox instead.

Time travel happens in the bedroom as well. But only if you have your very own Tardis entrance.  [AlmostUseful] pulled this off with just a bit of word trim and a very nice paint job. [via Reddit]

[Pierre] tricks an iPhone fingerprint scanner by making a replica out of hot glue.

Some of the guys from our parent company were over in Shanghai on business. [Aleksandar Bradic] made time to visit the Shanghai hackerspace while in town and wrote about the experience over on their engineering blog.

[Gregory Charvat] is a busy guy. In fact we’ve got a juicy hack of his saved up that we still need to wrap our minds around before featuring. In the mean time check out the Intern-built coffee can radar that he took over and tested on a  multi-million dollar Spherical Near Field Range.

And finally, everyone loves coffee hacks, right? Here’s what [Manos] calls a Greek style instant coffee machine.

Making Asteroids Miniature

Asteroids

Mini arcade cabinet builds are fairly common, but we’ve never seen anything like [Jurgen]‘s mini vector Asteroids cabinet that takes an original Asteroids circuit board and a true vector monitor and shrinks it down to table top size.

Unlike the raster monitors of a later generation’s arcade games, the original Asteroids cabinet used a vector monitor just like one would find in an oscilloscope. [Jurgen] found the perfect CRT in, of all places, a broken Vectrex console. The video circuitry in the Vectrex was rather primitive and the beam deflection was far too slow for the video signals generated by the Asteroids PCB. To get around this, [Jurgen] added a custom XY driver board. While the Asteroids game – and other vector Atari games – were designed for a screen with 1 MHz of bandwidth, [Jurgen] found that 300 kHz was ‘good enough’ to display proper Asteroids graphics.

While the cabinet isn’t a miniaturized version of any proper cabinet, [Jurgen] did manage to build a rather nice looking case for his luggable version of Asteroids. The exposed PCB on the back is a great touch, and an awesome project for any ancient video game aficionado.

The tiniest arcade cabinets you’ve ever seen

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After perusing Amazon one day, [Dave] found a very interesting piece of kit: a small, 1.5″ digital picture frame. They’re not very complex, just an LCD, a few buttons to cycle the picture, and a battery to keep everything portable. He decided the best use of this tech would be a tiny arcade cabinet, featuring screen shots of the best games a darkly neon lit arcade of the late 80s had to offer.

After sourcing a few of these digital picture frames on eBay, [Dave] set to work disassembling the frames and designing a custom enclosure. He wanted a few specific features: controls in the right place, replaceable sides, and the glowing red eyes of a coin acceptor slot. [Dave] whipped a model up in OpenSCAD and sent the parts over to his printer.

The controls for the digital picture frame were connected to a quartet of tact switches on the control panel, and a red LED provides the glow from the coin acceptor. With a USB plug and the frame’s memory loaded up with screen shots, [Dave] has a fabulous desk toy.

All the relevant files are up on Thingiverse if you’d like to build your own.

Coffee table arcade cabinet

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Get some Pac-Man fever while sitting on this couch thanks to the arcade rig built inside of the coffee table. The controls are a bit more sparse than more dedicated MAME rigs, but you should still be able to play most of the classics with four buttons and a joystick. After all, you need to reserve some room to put your feet up when you’re not gaming.

[Manny Flores] started the project with a Lack table from Ikea. The top is anything but solid. After tracing the outline of his LCD screen and cutting through the surface he discovered this is more of a beefed of cardboard than it is wood. The honeycomb of paperboard inside the surface of the table makes it really easy to clear out some space. In fact, when it came time to add the arcade buttons he just used a utility knife to cut the openings. Inside you’ll find a Raspberry Pi which interfaces with the buttons and joystick via an iPac USB controller board. A set of powered speakers mounted on the underside complete the design.

[via Adafruit]

Building a tiny arcade cabinet from a Game Boy Advance

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[Jani 'Japala' Pönkkö] found a way to make his old Game Boy Advance exciting again. He poured a ton of time and craftsmanship into building a miniature arcade cabinet. He did such a good job it’s easy to think this is a commercial product. But when you open the back of the case to switch games one look at what’s crammed inside let’s you know this is custom work.

What’s most surprising to us is that he didn’t draw out a full set of plans before beginning. He simply measured the circuit board and LCD screen from the Game Boy and went with his gut for everything else. The case itself is crafted from baltic birch plywood, which was primed and painted before applying the decals. There is also a screen bezel made of acrylic with its own decal like you’d find on coin-op machines. These were made using printable sticker paper. The electronic part of the build involves no more than extending contacts from the circuit board to buttons mounted on the case. But he did also replace the stock speaker for one that produces better audio.

Tiny MAME cabinet built from Raspberry Pi

It’s been a while since we’ve seen [Sprite_tm] pull a project from thin air, and we haven’t seen him do anything with a Raspberry Pi yet. All things must pass, and finally [Sprite] has unleashed his tiny, pocket-sized MAME machine to the world.

The build uses a Raspi for all the Linux-ey and MAME goodness, but [Sprite_tm] didn’t want to fiddle around with the HDMI or analog video output. Instead, he chose to use an SPI-controlled TFT display that is only 2.4 inches across. This isn’t a new hack for [Sprite] – he figured out how to connect this display over GPIO pins with a Carambola earlier this year.

To make his cabinet portable, [Sprite] opted for using old cell phone batteries with a cleverly designed charging circuit. When the power supply is connected to +5V, the batteries charge. When this power is removed, an ATtiny85 provides 5V of power to the Raspi and display.

No arcade cabinet is complete without a marquee of some sort, so [Sprite] used an extremely tiny 128×32 white OLED to display the logo of the game currently being played. Everything in the Raspi is set up to be completely seamless when switching between games, automatically configuring the controls and marquee for the currently selected game.

You  can check out [Sprite]‘s mini MAME booting straight into Bubble Bobble after the break along with some gameplay footage and finally switching it over to Nemesis. A very awesome build from an exceedingly awesome maker.

[Read more...]

Building the most offensive video game ever

[Autuin] created the most offensive video game ever. Inside a small cocktail arcade cabinet, he installed his own video game that recreates the experiences of the Space Shuttle Challenger and her crew on their last flight.

The build started off by picking up an old cocktail version of Space Zap from The Hackery, a neat little recycling place that turns old computers, monitors, and even old arcade machines into something useful again. After [Autuin] lugged his arcade machine back to his home base at Free Geek Vancouver.

After drooling over the 30-year-old circuitry, [Autuin] disassembled the old machine and installed a mint condition 19″ VGA monitor where an ancient black and white CRT once resided. The control panels replete with their comically large buttons were refurbished and connected to an Arduino and the whole shebang hooked up to a slightly outdated computer.

The real magic happened when [Autuin] coded his game. He created a few sprites from NASA archival footage and made a game where a shuttle takes off and is controllable by each player. As the most offensive video game ever, the space shuttle blows up shortly after launch, declaring ‘game over’ for both players.

[Autuin] will be showing off his new arcade game with a new bezel and cabinet graphics during Vancouver’s Eastside Culture Crawl this November. The game will probably be updated by then; we suggested editing the ‘time to explosion’ to T+73 seconds, but [Autuin] said he’s thinking of ways to make it even more awful.

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