this is the easiest way to turn a vintage NES controller into a simple flash drive on a budget AND you can save the original parts if you ever want to return it back to its original working condition.
Step 1: Gather Your Parts
the first step is to gather the parts you will need.
Nes Controller ($5)
usb extension cord ($4)
usb flash drive ($10)
1/4" or 1/2" piece of foam
Step 2: Remove the Back
remove screws from the back of the controller. a simple jewelers phillips should do the trick. be careful not to strip them out or lose them!
Step 3: Remove Hardware
carefully remove the cord and circuit board. if you save them, you can always replace it back to original working condition some day. I didn't have the heart to cut out a section for the flash drive so I will use foam instead.
Step 4: Get Some Foam
you can find foam like this just about anywhere and it cuts easily with scissors. I left it about 1/2" thick so it kept plenty of pressure on the back side of the buttons since I like the feel of operational buttons. I also only cut enough to cover the buttons so there is plenty of room along the top for the flash drive.
Step 5: Insert the Flash
next I inserted the flash drive into the usb extension cord and placed them along the top of the controller. I also routed the cord the same as the original so its tug-proof.
Step 6: Place the Foam/Install the Back
place the foam over the buttons and reinstall the back.
Step 7: Test the USB Controller
all done! now plug it into the pc to make sure it works properly and enjoy your new nostalgic flash drive!