Dreamcast USB Adapter Case + USB 2.0 Hub (USB4MAPLE)

Custom enclosure made to fit 2 USB 2.0 breakout boards, an rp2040 microcontroller board (I used a raspbeerry pico 1) and a usb 2.0 hub board of your choice, the aim of this design is to create a usb adapter that eliminates the need to use an external usb hub with the same operation as if it was externalized, I did this mainly so I could back up my saves with the USB flashdrive that can be used with this implementation but I also wanted to be able to use a regular USB 2.0 controller in case I wanted to

For the project you'll need:

x1 RP2040 board (Raspeberry pico, RP2040 Zero, etc)

x2 USB 2.0 breakout boards (See reference pic)

x1 USB 2.0 Hub (See reference to know which one did I use)

x4 M3 nuts

x4 M3x12mm countersunk screws (x4 M3x15mm screws work too if you don't have countersunk ones)

x1 Dreamcast controller cable (I used one salvaged from a smashed Nyko controller)

Velcro tape to tidy up the excess cable (if you want to keep the cable as is, which is what I did in my case)

Instructions: 

Flash the rp2040 with the firmware found at https://www.dreamcast-talk.com/forum/viewtopic.php?f=5&t=17404 or alternatively at http://usb4maple.wikidot.com/

Then, wire the controller cable to the rp2040 board as follows:

Once you finished, prepare the USB 2.0 hub by removing the board inside it, then, the female connectors and wire up a micro usb (or type c) data cable to where the 2.0 type A male connector was so it can be plugged to the rp2040 board

After that, solder the USB 2.0 breakout boards to the corresponding pads in the USB 2.0 hub board and you should end with something like this 

Now you're ready to place all the components inside the shell and close it, congratulations, now you can use a USB controller and a USB flashdrive with your DC! :D

Note: You may need to slightly sand the edges of the USB 2.0 breakout boards if they don't fit but they should, snugly

Reference Pics: 

USB 2.0 breakout board

USB 2.0 hub