This is part of a project to create modular components for a portable handheld gaming system. This way novices can assemble any models they want to use and essentially "snap" them together to quickly prototype. This dpad box works with Sega Saturn Dpads, so far but I will add other versions to make swapping out styles easy. The Fusion 360 project file with all the sketches step by step instructions for creating the model (so that you can easily modify it). This is released under the public domain license so you can use it for reference, modify, or incorporate it into your project and sell it. There are three variants of the top; 1 with no lip, 1 with 2mm lip, and 1 with a 3mm lip.

Fusion 360 project file: http://a360.co/2ixUNP9

Features: The box is designed to be swapped out with different dpad styles. I haven't yet designed the other case styles (Nintendo cross style, PS separate buttons) but I'd love any help in that.

It uses M2 screws that are 8mm long

Adafruit's soft tactile switches https://www.adafruit.com/product/3101

Replacement Saturn dpads I've tested it with this https://www.aliexpress.com/store/product/Replacement-for-Sega-Saturn-Controller-Arrow-Keys-Direction-Key-with-Cross-Buckle-for-SS-Controller/614632_32348389012.html

And also the dpads from the generic knock off controllers https://www.aliexpress.com/item/for-PC-Sega-Saturn-System-Style-USB-Wired-Gamepad-Classic-Game-Controller-Gamepad-Joypad/32813855388.html?ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10344_10068_10345_10342_10343_10340_10341_10541_10084_10083_10307_10175_10060_10155_10154_10056_10055_10539_10537_10312_10536_10059_10313_10314_10534_10533_100031_10550_10103_10073_10551_10102_10552_10553_10554_10557_10142_10107-10550_10551_10553,searchweb201603_2,ppcSwitch_5&btsid=ac316935-3944-41b0-a0d9-af889630b43b&algo_expid=06c657fb-a594-4289-b0ff-e74b1080c7e7-0&algo_pvid=06c657fb-a594-4289-b0ff-e74b1080c7e7