All aligned with the top slot reader

RetroPie Project – Part 4 – Case Continued

Case Project Continued

The first issue was discovered with the cartridge slot guide in the top shell of the Master System II. The guide is designed to encase the slot interface on the main board in plastic. For this reason, the plastic travels very deep within the shell and occupies a large amount of space.

Modifying the top shell

Master System II - Cutting away cartridge guide

Master System II – Cutting away cartridge guide

A set of wire cutters, pliers and a Stanley knife made short work of the surprisingly tough plastic.

Master System II - Cartridge guide cut away

Master System II – Cartridge guide cut away

Needle files in the post to tidy this up.

I noticed as a bonus, the light from the Raspberry Pi LED’s travel through the translucent cartridge cover lid:

Master System II - Activity/Status LED's

Master System II – Activity/Status LED’s

Internals Revisited

After raiding the kids LEGO box for black LEGO blocks, I constructed a prototype frame around the USB hub:

Next up, getting my fingers bonded together:

The lid was required to prevent any tilting when a USB cable is plugged in. Once again, the Belkin USB hub lines up perfectly with the height of the LEGO as well as the control pad ports. I bound the hub twice in PE electrical tape to give the LEGO a tighter ‘bite’.

Rear I/O Ports

The current solution (a large hole) where the former RF and DC Input hole resided, was not at all practical:

Master System II - Impractical I/O solution

Master System II – Impractical I/O solution

Scouring eBay, I was able to locate the following items on the cheap:

  • 25cm HDMI extension cable
  • CAT5e RJ45 horizontal keystone
  • 10cm micro USB extension cable

Some adjustments required as the CAT5e keystone expects housing to clip into:

Next, onto HDMI port:

Finally, after waiting ages for Royal Mail, the micro-USB power port:

Next, an SD Card Extension Reader turns up via Air Year from mainland China:

The SD Card Extension Reader makes it very simple to change over SD Cards for rebuilds or to try out different Raspberry Pi distributions. One moment I can be on Retro Pie, the next I can swap out for XBMC or stock Raspbian.

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