Observercade, Portable MAME System Of The Future.

[GarageMonkeySan] wrote in to tell us about his latest project. It’s a MAME arcade emulator, but not just any MAME arcade emulator, it is housed in a briefcase. And if that was not interesting enough, it was built in the style of the TV Show “Fringe”, specifically like the Observer briefcases. He calls it the Observercade.

The hard-shelled Samsonite briefcase was taken apart to assess the best way to move forward. A Sintra frame was added to the top half of the briefcase and would hold a scavenged laptop LCD screen. A monitor faceplate was then made from 1/16″ polystyrene sheet to fill the gap around the screen.

The bottom half of the case holds the remaining electronics, which consists of a Raspberry Pi Model B (running RetroPie), power supply, speakers and LCD driver board. They are all mounted to the bottom of the control surface which also supports the controller joystick and buttons. Notice that the buttons are labeled in Observer symbols. These symbols are as accurate as possible roughly translating to ‘credit’, ‘player’… etc. This is a wonderfully done project that shows [GarageMonkeySan] pays extreme attention to detail.

If the Observercade rings a bell, you may be remembering the project that gave [GarageMonkeySan] his inspirations: the Briefcade.

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Scratch-Built Bar Top MAME Cabinet

Video game enthusiast [Mike] is all about the journey and not necessarily the destination. That is why he likes working on projects and documenting their progress with great detail. His bar top MAME machine is certainly no exception.

One of [Mike’s] goals was to see if he could keep the look and feel of a large arcade cabinet but scale it down so that it was portable. He started with drawing up a model in Sketchup. Once satisfied with the layout and making sure everything would fit, the side panels were cut out of pine boards and will only be clear-coated. The remaining panels are cut from MDF as they will be covered in a matching decorative vinyl wrap.

The control panel may look simple but a lot of thought went into it. Of course, there is a joystick but [Mike] chose to only use 4 game-play buttons. He did this to save space and estimates he’ll still be able to play 90% of the available MAME games. Those 4 buttons are illuminated and the MAME front end, Mala, was configured to light up only the functional buttons for the particular game being played. Front and center on the control board is a rotary encoder for playing games like Arkanoid or games requiring a steering wheel.

In the end this build came out pretty nice looking. His build log is a great reference to hit before starting your next arcade cabinet project.

Although [Mike] calls his MAME cabinet ‘mini’, it’s not the most mini we’ve seen here on Hackaday.

Meme Themed Pinball Machine – Much Flipping, Y U No Win?!

Summoning 4chans, 9gags, Reddits and other denizens of easily-digested content, Liberty Games stripped apart a dilapidated “Baby Doll” pinball arcade machine and turned it into this meme-spouting monstrosity. A complete redo of the vinyl and graphics to sport dozens of familiar internet tropes was first, then they had Shapeways create internal scenery and finally some electronics were added to spice things up.

We have seen PINMAME-based digital machines but this took a different path. Pinball machines this old pre-date common transistors so they rely on electro-mechanicals for everything. This made hacking the machine challenging so the team intercepted most of the signals and tied them into a Raspberry Pi with a Pi-face interface board. A videoscreen was added to the scoreboard, triggering all manner of memey videos and sounds according to actions performed and unlocked on the screen.

If you yearn for expired pranks of years gone by and are bad at pinball, you are in luck. Losing the game gets you Rickrolled – over and over again. On the plus side, Nyan Cat rockets away to bonuses and even the Admiral himself warns you of impending danger.

We resisted the urge to write this article as a chain of one meme to the next, you will get plenty of that from the well-documented project conversion and the following video. Someone in the comments will probably make a list of all memes.

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A Tiny Arcade Machine With Tinier Buttons

Building a MAME machine around a Raspberry Pi has been the standard build for years now, and tiny versions of full-sized arcade machines have gone from curiosity to commonplace. [diygizmo] just built one of these tiny arcades, but the fit and finish of this one puts it above all others. There’s a real, miniature joystick in there, along with 3D printed adapters for tact switches to make this one look like a lilliputian version of a full size standup MAME cabinet.

The entire enclosure is 3D printed, and most of the electronics are exactly what you would expect: A Raspberry Pi, 2.5″ LCD, and a battery-powered speaker takes up most of the BOM. Where this build gets interesting is the buttons and joystick: after what we’re sure was a crazy amount of googling, [diygizmo] found something that looks like a normal arcade joystick, only smaller. Unable to find a suitable replacement for arcade buttons, [diygizmo] just printed their own, tucked a tact switch behind the plastic, and wired everything up.

Add in some decals, paint, and the same techniques used to create plastic model miniatures, and you have a perfect representation of a miniature arcade machine.

STEAM Carnival Hacker Preview Day

Last week we wrote about the guys over at TwoBitCircus and their upcoming STEAM Carnival. This Thursday we managed to make it down to the Hacker Preview day where they showed us all the toys and games that will be exhibited over the weekend.

The preview day went pretty well until the evening, when unexpected power problems occurred and the site lost power for a little while. But this is why you have a preview day right? Organizer [Brent Bushnell] even commented that he should have put a BETA badge on the ticket. Thankfully the outage coincided with the food truck arriving so everyone stopped for a burger.

Sadly all the fire based pieces were not active on the preview day since they didn’t have the appropriate safety measures in place yet, but they did get to show us most of their games. My personal favorites were the Hobby Horse Racing, and the Laser Foosball.

Here’s a quick run down of some of the stand out pieces.

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Console Controllers for JAMMA Boards

Back in the day, and by that we mean the late 80s and early 90s, arcade machines started using the JAMMA standard, a means for a single arcade board to be wired in to the controllers, video output, and other ephemera found in arcade cabinets. Since then, quite a few people have amassed a collection of these vintage arcade boards. Putting them to use requires a means of providing power, video output and controller connections. The usual way of wiring in a joystick and buttons is with a wiring harness, but [Mike] and [Jasen] are connecting Xbox 360 and PS3 controllers to their machines with the help of a Raspberry Pi Hat.

[Mike] and [Jasen] created Project Kajitsu to replace the expensive ‘Supergun’ controllers arcade game collectors usually use to play Street Fighter, X-Men, and Battletoads. They’re using the USB ports on a Raspberry Pi B+ to listen to two XBox or PS3 controllers and translate button mashing into something these old games can understand.

The guys are using a custom Linux Kernel that boots in just a few seconds, providing the bare minimum of an OS to support the controllers. The board itself is extremely simple; just a few bus transceivers, caps, resistors, and headers. They have an iPhone-quality vertical video proof of concept video (below), and although they’re still figuring out the best way to simplify the Bluetooth pairing process, they’re well on their way to supporting wireless controllers.

This board only provides controller input. If you have one of these old boards, you will need video output. That’s another project entirely, but very simple if you have an SCART monitor.

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Building a Vector Monitor Controller

[fredkono] has a few vintage Atari arcade boards sitting around, and without the rest of the arcade machine – especially the XY CRT – these boards would continue to gather dust. The solution to this terrible shortage of vintage video games was to build a vector monitor from scratch. No, that doesn’t mean building a new CRT, but it does mean rewiring the yoke and building a CRT controller board for tubes salvaged from small, old TVs.

Nearly all the CRTs you’ll find at your local goodwill or surplus shop are raster displays. The CRTs used in the old Atari games were vector displays and extremely similar to the tubes found in old oscilloscopes. [fred] turned the CRT found in an old 9″ color TV into a vector monitor by rewinding the yoke.

With the tube rewired, it was only a matter of connecting the custom deflection circuit boards and getting the old arcade boards running. The images drawn with the new yoke deflector board are great and produce fine, crisp lines of some of the most famous video games in history.