Mini SNES Raspberry Pi Zero Case WIP

thingiverse

A custom MINI SNES style case for the Raspberry Pi Zero is being developed based on the original "Mini SNES - Raspberry Pi 2/3 Case" by AndrewBougie. The new design accommodates the available outputs on the Pi Zero and requires a USB Hub & some modifications to your Pi Zero. A standard 3mm LED (red die with white diffused lens) is allowed for, as well as Front side USB Ports (via internal hub), & functional POWER / RESET buttons. The POWER button on the case is wired to the Pi's GPIO port and used as a shutdown button. There are tutorials available for writing the Python script for your shutdown button. The RESET button on the case is wired to the Pi's "RUN" PCB vias, which provides a hard reset of the Pi. Optionally, the reset button could also be wired to GPIO to provide a button that can be mapped to your emulator's game specific reset function. Standard 7mm DPDT "non-locking" PCB pushbutton switches are used for the buttons. A prototype PCB perfboard and 2 USB type "A" female sockets will also be needed. The goal of this project is to create a Pi based game station for as inexpensively as possible by using the Pi Zero as a base computer. Build instructables link coming soon, still a WIP. Printer Settings Printer Brand: PrintrBot Printer: Play Infill: varies Notes: I would love to hear your comments if you have any printing tips or suggestions! A "Light Stone Gray" and "Dark Stone Gray" PLA 1.75mm $5 filament spool from Protoparadigm was used for the project. Research showed that a temperature of 215°C is necessary for strong layer adhesion. Generic PLA "sample packs" from eBay were used for the buttons, which took some research and messaging sellers to find a “Dark Purple” that closely matches the original SNES color. The buttons are fairly simple to print. A solid fill with a low layer thickness (HiRes) was used to achieve the smooth convex shape of the button top surface. Retracting after Z hops was also experimented with to avoid the printer dripping loose filament on the top/final layer surfaces. The Case top is tricky to print due to the amount of supports needed. The settings can vary depending on your printer and the time you have available to print them. A Printrbot Simple Metal with a 0.6mm volcano nozzle was used for speed, printing in about 2.5-3 hours. Cura 15.04.6 slicer software was used with the following settings: Layer Height= 0.3, Shell Thickness= 1.2, Enable Retraction [Y], Minimum Travel= 1.5, Enable Combing= [ALL], Minimum Extrusion= 0.02, Z hop when retracting= 0.0, Bottom/Top Thickness= 1.2, Fill Density= 25%, Solid Infill Top [Y], Solid Infall Bottom [Y] (I did some without for speed, doesn’t seem to affect quality), Overlap= 15, Speed= 50(55), Temperature= 215°C, Brim [Y], Supports [Y], Structure Type [LINES], Overhang= 2°, Support Fill amount= 15%, Distance X/Y= 1.5, Distance Z= 0.35, Brim Line Amount= 10, Nozzle Size= 0.6mm, Minimum Travel= 1.5, Skirt Line Count= 1 The case bottom is fairly simple to print. You can print these in higher resolution and still get a reasonable speed. I averaged about 2 hours with these settings: Layer Height= 0.18, Shell= 1.2, Top/Bottom Thickness= 0.6, Fill%= 15%