Instructables
Picture of SNES Super Gameboy Line Out Audio Mod
The Super Gameboy (SGB for short) is Gameboy cartridge player for the Nintendo Entertainment system. Chipmusicians who use LSDJ or Nanoloop can use the SBG to compose on a large screen. Wether its at home with friends, or in a studio environment, the SBG can be a great tool for Gameboy composing and today we are going to make it even better.

We will be adding a 1/8" (3.5mm) line level stereo jack to the cartridge. By adding a line out, you will be able to get sound directly from the cartridge for playback and recording directly into your mixer or PA. 
 
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Step 1: What You Will Need

Picture of What You Will Need

Here are some of some of the tools I like to use, they are not all necessary, but you will need wire strippers, a NES Security bit, a small phillips screwdriver, a power, and a soldering iron. optionally below I have a set of "helping hands" for soldering, and a magnetic dish for my screws (both items can be purchased at harbor freight for next to nothing and really come in handy for all your mods).  You will also of course need a 3.5mm Stereo jack and 3 wires about 5-6 inches long. Wires should always be sealed with heat shrink or electric tape. I salvage all my wire from SNES and NES controllers that I have scrapped for DMG button swaps.


Step 2: Opening Cart and Removing PCB

Picture of Opening Cart and Removing PCB
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Once your work area is ready, you can start taking apart the cart. Remove the 4 security screw with your security bit as seen in the 1st image.

Once all 4 are removed you can lift from the bottom and the cart should come easily apart. You may set the top half aside for now and pick up your phillips head and remove the small screws as seen in the 2nd image. 

You may now pull out the PCB and prepare for soldering. 
optic_852 years ago
Nice paint job, what did you use for those nice splatter effects? Did you just flick a paintbrush?
craig34 years ago
Is that a digidesign desk?
 Where did you get/make the LSDJ cart? I bought the ROM and the emulators work well but all the flashable carts I could find were up in the $100 range....
Kyle Robinson (author)  computer_gui4 years ago
 buy one from kitsch bent.. if you have the lisence for the rom he will send it to you pre-flashed store.kitsch-bent.com/product/usb-64m-smart-card

should never pay more than that (about 40)
blckpythn4 years ago
missing a slash for 1/8" jack in the intro
Kyle Robinson (author)  blckpythn4 years ago
 Thanks.. always something..lol
WhatULive44 years ago
Very cool!  Does the sound come out amplified at all (aka can you use headphones), or do you need to connect it to an amplifier of sorts?
Kyle Robinson (author)  WhatULive44 years ago
 Nah, you cant use headphones... Needs to hook up to a mixer of sorts first. Thanks