I started with an old (and filthy) NES I picked up off of eBay for $10. It didn’t come with the power or video cables so I couldn’t check to see if it worked. Although I was ginger with the disassembly process so the board is intact.
The heart of the build, a Raspberry Pi Revision B board. I picked up a case for it along with a 8GB SD card, and I just added an Edimax micro WiFi USB dongle.
I used the original power button as a pass-through switch for the system. I have a short micro-USB going from the rear of the case to the RPi, but I route the +5V line through the switch so I can control the power.
Secondily, you can see two wires (one with a heat-shrink contained 330ohm resistor) soldered to the LED. These lead to the +3.3V and Ground GPIO headers on the RPi.
The last modification, is a small notch cut into the board directly under the NES SW-02 marking. The LED and Reset switch share a common path, which would cause issues later when I added the reset switch so I preemptively severed the connection.
I opted to use the original NES controller ports to house the USB connections. Using a saw I flushed the back of the ports to have a flat surface, and then using a utility knife I carved out a cavity to fit the female connection. I soldered a male cable to each so that they can be connected to a USB hub mounted to the interior of the top half of the case.
The mounting plate for the power and HDMI is a block of Aspen wood that I had around that has been notched to accommodate the different sized plugs. There is a matching piece which screws down on top of this piece to give it a firm footing. The bottom block is secured with a high grade foam tape.
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