I used a fresh and portable Arduino environment to do this. I'd really like to get this figured out and get a character emulated. I think all we need now is a way to write RAW (!) HID data from the Arduino, because that's the protocol the Portal uses. Because we replaced the driver in Zadig, the Test GUI won't recognize our Portal anymore, so I used USBlyzer to see the data. If either the portal or the game is NOT the problem, try some of your other. Make sure to use Zadig 2.0.1! So now Dolphin is recognizing the Portal and it's working just like a real console. For Skylanders: Spyros Adventure on the Xbox 360, a GameFAQs message board. So I followed these instructions to get the Portal working, and got it. It recognized the (real) Portal, but it wouldn't recognize figures. I ripped my copy of Skylanders Swap Force to a WBFS file and started the game in Dolphin. No Portal of Power no way to play, Dolphin doesn't emulate it and it's very unlikely. You just need to use zadig to override default Windows driver with libusb and then you're done, just load the game in Dolphin and plug Portal of Power into your computer.

I used Serial.write() to try to replicate the data that the Portal was sending to my PC, but I forgot that the Portal used a Raw HID method of data transfer, not Serial. Dolphin supports Portal of Power since revision 3.5-2143 (wii-network + wii-usb merge). I started placing figures on the Portal and the Portal would send data to the computer (however, the colors of the Portal were not changing based off of the type of character I placed on the Portal). Here's where I got excited: THE GAME RECOGNIZED IT AS A PORTAL! Now I got excited I fired up a Test GUI from a library called HIDAPI, and I plugged in my main Portal.

I fired up Skylanders Swap Force on my Wii and plugged in the Arduino Micro into the USB port of the Wii.

Skylanders portal of power emulator