MetaFilter has a nice roundup of various NES hacks. You might have seen these before, but it's great to see them all in one place. Our personal favorite is the NES in an NES cartridge, and who could forget the NES controller coffee table? Don't forget to check the comments for more interesting NES hacks. We think there's just something about the original Nintendo Entertainment System that inspires people to go all out with creativity and playfulness. We're willing to bet that you probably have an old system at home gathering dust, just waiting to be modded and hacked. We'd love to hear what you have done, or will do to it.

Fresh off the tips line, [Jake] sent in his portable NES project. We've seen quite a few portables, but we love that the entire thing is built into an old NES cartridge. It's got 99 games and some clever control placement. Three N cells nestled in the former connector slot power the system. You can see more pic over at [Ben Heck]'s forum.

The fine folks at remaincalm.org, who brought you the wireless mcu controller dsmcu, have put together a list of 24 homebrew music apps for the Nintendo DS. We've mentioned programs like Protein[DS] before, but the list has others like this monome emulator. If you notice anything they're missing, let them know and they'll be sure to add it in.

[via Waxy]

This is a video of [Joey Mariano] from animal style demoing his Game Boy pedal board. He added a D15 port to the back of the Game Boy, which is wired to each of the 8 buttons. The port is connected to a breakout box for 8 piano sustain pedals. The box also provides power to the Game Boy. The Game Boy is running the Nanoloop step sequencer. If you're wondering about the guitar sound, he's probably using an 8-Bit Fuzz pedal.

[via GetLoFi]

Homebrew developer [yaarglafr] recently released this video of his Protein DScratch in action. You can download a demo version here. The program simulates DJ scratching on the DS with an intuitive interface much like the ones on the touchscreen turntables we discussed the other day. It works well with any of the major DS slot devices; just run a DLDI patch on it and you're good to go.

Running homebrew applications on the Nintendo DS is easier than ever these days, but if you didn't get into the scene on the ground floor, knowing where to start can appear much more daunting than it actually is. The great thing is: you don't need to crack open your DS and void the warranty. There are numerous peripheral options that handle this easily with no hardware mods required. DS Fanboy has served up a useful guide to the most popular peripherals and homebrew software. They explain the pros and cons of each peripheral along with the installation and uses of a few popular homebrew apps.

Already well versed in the homebrew arts? Then try some hacks we've featured previously, like building a serial interface or installing DSLinux and loading it with with software like this on-screen qwerty keyboard.

[Jose] sent in his efforts to build his USB Transferer. I'm pretty sure it's a gameboy flash cartridge interface based on the Atmel AT90USB647 AVR microcontroller. Once the prototype board came in, he soldered the controller, gutted an old gameboy for the cartridge connector and had the device showing up on his PC by the end of the day. Oddly, the card he's interfacing with is a USB device on it's own. Until a few more details are published, I'd assume that the interface would be useful for connecting to more than just that particular card.

[Jose] thinks that the Little Sound DJ is too expensive and hard to find. Now he's trying to build an inexpensive USB programmable GameBoy cartridge. Currently he's working with a LPC2148 development board. It's not quite clear where he's going with this. He certainly wants to add USB programming, but it seems that he's trying to hack a mp3 decoder in there as well. [update: yes, I know how to spell cartridge!]

Yesterday, I was standing on a tropical island off the coast of Belize. Vacation rocked with lots of SCUBA diving, spearfishing and snorkeling. I'm back home, shaking off the jet lag and clearing up my inbox. Thanks to [fabienne] for filling in and letting me unplug for a while!

[Darkrom] has set a new standard for Hack-A-Day readers... I haven't seen it in person, but that looks like a legit Hack-A-Day tattoo.

[null] sent in a new use for a frequency generator, a spare car amp, a sub-woofer and a plastic coffee can - brass cartridge polishing.

[LoopyMind] sent in this Game Boy Advanced Movie Player IDE hack. It's pretty much a direct CF to laptop drive cable with an external battery supply.

[Dingolishious] sent in a POE UPS/remote power control solution. Could be handy if you're using many POE devices, or if you're having power issues. He added an inexpensive remote power monitor/switch solution behind his UPS. It senses power outages and kicks out an email - and allows remote power cycling of his POE devices. Of course, if you've got a linux box behind the UPS, it can monitor the output from the UPS and send notifications.

[William] added a preamp stage to his iKEY usb recorder. looks like an interesting toy - it'll record audio directly to a USB flash key. The pre-amp allows him to record in more challenging environments.

[Andrew] noted a simple mod to increase the deadly fire power of the ubiquitous airsoft pellet gun. It's just a matter of reducing some extra space in the spring compression area.

Last but not least, [VIPER] modded his projector to use a 12v halogen headlight bulb. Not a bad idea - at one point I was pondering a 550 watt source four halogen as a possible replacement.

This one's been making the blog rounds, but it really fits us. Nintendo makes one, but this instructables tells you how to make your own for a DS lite. It uses a PIC 12F675 to read the input line and activate a vibration motor from an old nokia cell phone.

Oh, speaking of instructables, I forgot to mention that they finally picked a winner for their laser etching machine. Of course, if you lack the budget, you can make your own for $60.

[Jowan] sent in this excellent gameboy cartridge hack. The cartridge contains 1MB of flash and an 8 bit serial I/O interface. He's using it to play percussion with some solenoids and a custom rom. If you guys like it, he might be convinced to put together a how-to on hacking the cartridge.

[Reilly] translated some content from this site and brings us an interesting mod to run a Nintendo DS at 1.7x normal speed. The mod allows the addition of a switch for overclocking on demand. Nothing like a good overclocking to end the day.

[Tom] pointed out this nintendo DS midi wifi hack demo. [0xtob] and [therain] put on a demo of using a ds as a midi device. Check out the video. The two most interesting applications demo'ed: [to me] The kaos pad app and using the DS as a midi playback device. [I wonder how long until we see a DS orchestra. Seems like the DS still has plenty of potential for development. [via musicthing]

[therain] has added a MIDI port to his Nintendo DS. It's just a two wire connection so it's pretty easy if you've got an extra cart laying around. As a demo, he wrote a program that uses the touchpad to act as two Control Change devices. One is the X value and the other the Y so it behaves similar to the Korg Kaoss pad. He's working on a sequencer as well.

[Avelino Herrera Morales] wrote in to tell us about his Game Boy Advance MIDI project. It's pretty neat since it only takes two resistors and a link cable to use. The link cable has a slotted connector so you can use a chunk of protoboard to connect to the pins. He has software the does all of the MIDI packet generation. As an example, he uses the GBA to control a Chameleon synthesizer.