This is great. A few years ago, I decided to buy a WII U, since I have basically every Nintendo console system since the NES. But the gamepad screen was broken and I couldn't sync the gamepad to the screen until I fixed it. And I tried to see if there was any alternative, but there wasn't until now. Hopefully that means more WII Us can be saved... You can sometimes find used Wii Us for $30 without the gamepad, while the gamepad itself costs around $100..
Oh wow. I never played my Wii U without the gamepad, so I didn't know this. Makes sense that the gamepads are still as expensive as they are.
Here is a link to the repository for the gamepad simulator: https://github.com/vanilla-wiiu/vanilla