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After a bit of investigate work by yours truly, I can only say don't buy.

http://forums.benheck.com/viewtopic.php?f=9&t=72418

<snarky nitro mode>
You could always damage a DMG shell an make your own version of the mythical Gulf War Gameboy that plays Tetris forever, but without a display.
</snarky nitro mode>

Yeah, the CPU doesn't know whether there's a screen attached. You won't have any direct button input however, so there's that. You could get around that with some planning. Say put LSDj in slave mode and start the playback from the other side of the link cable. Or use it for MIDI.

Why use Audacity for this? Any good tracker will offer a way to draw waveforms in the program.
Milky: Hold shift while holding the mouse button.
Renoise: Select the draw tool. Renoise will also create ask to create a new waveform if you're trying to draw on an empty one, which will be correctly tuned by default.

Hey, don't be a dick. Only I am allowed to be a dick.

Also, moved to the handhelds forum.

Needs more diodes!

Refer to the schematic here, lower left corner of the first schematic. They are needed to guarantee that the 6-wire layout works properly. It may not be obvious when using LSDj, but as soon as  you do certain 3 button combos, the DMG will detect a 4th ghost button. Consider what happens when you press say A, right and down, when the diodes are not in place. Effectively, P13 and P15 are shorted as well, and a non-existent start button press will register.

For testing this, I recommend this thing that I made which will indicate all pressed button on the screen.

Well, it has to fit in the space. CRxxyy denotes the size of the battery, where xx is the diameter and y.y is the height, in those pesky metric units. So for example a cr2032 is 20 mm in diameter and 3.2 mm tall. For the metroid cart, this should just work right away. Of coure, you need to respect the polarity, however.

For the bleepbloop cart things get a little bit trickier, since it was not designed to use a CR2032 battery. You might even need a smaller size, say a CR1632. You'll want to solder one of the sides to a pad for mechanical robustness. For this, you'll probably want to connect the + tab to the bottommost terminal. However, only the top terminal (of the two soldered to the holder) is actually connected electrically to the rest of the circuit on bleepbloops. The other one is just an island pad. So you'd need to make a connection between the two pads using a thin wire. And you'd also need to connect the negative terminal of the battery to any ground point on the board using a jumper wire. For example the on in the microcontroller programming port. You also need to put some form of isolation around or under the battery to stop it form shorting to other things on the board. Heatshrink is not recommended, as the battery is sensitive to heat. Or at least be careful if you use it. PHEW.

Oh, or...
http://uk.rs-online.com/web/p/battery-h … s/2197954/