PIC-based USB Conversion For An NES Controller

September 3, 2012 by Mike Szczys 2 Comments

[Andres] wrote in to share his USB for NES controller project (translated). It enumerates as a USB keyboard and is easily mapped on most emulators. Over the weekend we looked in on an AVR programmer used for this purpose. [Andres] went a different direction, using a PIC microcontroller and eventually incorporating his circuit into the body of the controller.

The prototype circuit can be seen above. [Andres] uses a breakout board for the PIC 18F4550 to test the circuit. The chip has native USB support, and reading the button states from the controller’s shift register is a snap. You can see him using this test rig to play Super Mario Bros. on an emulator in the video after the break.

The second iteration of the project moves from breadboard to a soldered circuit. A 18F2550 is used as it comes in a rather small DIP package. If the legs are flattened there’s room inside the controller case for it, along with a few capacitors and a crystal. The original controller cord is removed to make way for a USB cable.

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Turning A DS Into A Game Boy Advance

August 22, 2012 by Brian Benchoff 15 Comments

The venerable Game Boy is dead – and has been for a long time – after being replaced by the DS, DSi, DSi XL, and the 3DS. That doesn’t mean there’s nothing of value to the old Game Boy catalog; Pokemon Red/Blue is still as much fun as it was 15 years ago, and the game play of Advance Wars is still superb.

[Maarten] over at Bureau voor Gamers decided to put a modern twist on our old friend by taking a first-gen DS and converting it to a proper single screen Game Boy (Dutch, Google translation).

The donor machine was a broken first gen DS with a broken top screen. [Maarten] removed the top screen, did a tiny bit of Bondoing, moved the speaker, and gave his new toy a bright orange paint job.

Now [Maarten] has a modern version of the best portable system ever created, packed full of more powerful hardware and a much more capacious battery. Sure, it’s not a build that requires rewiring everything, but it’s still an awesome build for GBA aficionados.

Dual-channel, Variable Voltage Test Box Is A Busy Console Modder’s Dream

August 7, 2012 by Mike Nathan 9 Comments

multi-voltage-test-box

It seems like [Chris Downing] is always up to something new. If he’s not keeping busy by creating slick portable iterations of previous-gen gaming consoles, he is dreaming up ways to make his modding life a bit easier.

Recently while working on a Nintendo controller designed to control three different consoles, [Downing] found his desk buried in a pile of power supply and A/V cabling. Annoyed with his growing rat’s nest, he decided to build a universal power supply that would allow him to quickly switch between consoles with little effort.

He dug up an old PC power supply, and fed it into a LED control box built for cars. [Downing] then mounted an array of nine rocker switches on the box, adding A/V inputs and outputs along the way. A set of voltage regulators hidden inside allow [Downing] to dial in whatever custom voltages he might need at the moment.

The test box should come in pretty handy as [Downing] pursues even more modding projects in the months to come. In the meantime, be sure to check out the video below where he covers the finer points of the device’s design.

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N64 Controller Mod Means Playing Games Akimbo

August 5, 2012 by Brian Benchoff 8 Comments

Star Wars Episode 1 Racer for the Nintendo 64 has a rather interesting feature: by entering the code RRDUAL on the cheats menu, it’s possible to plug two controllers into the console and control each engine independently. This gives the game an awesome arcade feel, but dual-wielding N64 controllers is a bit of a burden. [Clarky] thought it would be a good idea to combine two controllers into one, and the Star Wars Racer controller is the result.

Like most console mods, the build began by tearing apart two N64 controllers and gluing them together. With a ton of bondo, sanding, and fiberglass, [Clarky] had a mutated N64 controller perfect for the Episode 1 game.

[Clarky] will be updating the build with a built-in rumble pak, but for now he’s doing his best to learn how to fly a pod racer with both hands. You can check out the demo of his build after the break where he plays the Star Wars game as well as a round of Goldeneye using his akimbo controller.

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Super Nincoffee Jr.

August 3, 2012 by Mike Szczys 10 Comments

Your morning routine doesn’t include enough old-school gaming. Break the caffeine habit and get your Mario on at the same time with the help of the Super Nincoffee Jr.

[Luigifreakout123] shares the details of the build in the video clip after the break. He starts by revealing that this is the second version he’s made. The first wasn’t a Jr., but instead used a full-sized Mr. Coffee unit. Neither make coffee, but instead serve as an enclosure for the gaming hardware. The on/off switch and original power cable are used to control the electricity to the console. Openings have been cut in the tops and front for a game cartridge and the two controller ports. A composite video and stereo audio cable comes out the back of the machine next to the power cord.

Yeah, it’s super simple, but sometimes that all it takes for a project to be a delight like this one is.

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USB Dongle For Unmodified NES Controllers

July 19, 2012 by Mike Szczys 21 Comments

This USB dongle will let you use your unmodified NES controllers on a computer. That’s because it includes the same socket you’d find on the classic console.

The image above shows the prototype. Instead of etching the copper clad board, each trace was milled by hand (presumably with a rotary tool). To the left the black square is made of several layers of electrical tape that builds the substrate up enough to fit snugly in a USB port.

An ATtiny45 running the V-USB stack has no problem reading the controller data and formatting it for use as a USB device. This is actually the second iteration of the project. The first attempt used an ATtiny44 and a free-formed circuit housed inside the controller. It worked quite well, but required alterations to the circuit board, and you needed to replace the stock connector with a USB plug. This dongle allows the controller to go unaltered so it can be used with an NES console again in the future.

Interfacing SNES Controllers With Your Raspberry Pi

July 5, 2012 by Mike Szczys 12 Comments

This lovely set of wires lets [Florian] connect stock Super Nintendo controllers to his Raspberry Pi. The IDC connector in the upper left plugs into the GPIO header on the RPi rather than going the route of using an intermediary USB converter.

The setup lets you connect two controllers at once, so you’ll have no trouble going head-to-head on Mario Kart as seen in the clip after the break. The ports themselves were pulled from a pair of SNES extension cables. Since button signals are pushed to the console via a shift register there’s just five wires needed for each (voltage, ground, data, clock, and latch). As far was we know the Raspberry Pi pins are not 5V tolerant so you probably want to add some level conversion to this circuit if you build it yourself.

[Florian] wrote a C program which shifts in data from the controllers and converts it to HID keyboard inputs. This should make it extremely flexible when it comes to emulator setup, and using the technique for different styles of controllers should also be pretty easy.

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