Question Designing my own Wii Portable

[Estreem]

Hi, I've done a bit of reading on Wii portables and wanted to make my own. I know how to CAD and have basic understanding on electronics, I'm currently reading through the guides on BitBuilt. I had a few questions:

- Will an RVL PMS PD 3 and PMS 2 work for my charge management board and my battery protection board? Will I need anything else to power the Wii other than the cells themselves?
- What voltage should I aim for on a 4 layer portable? I'll be using 4 cells in parallel, I want to be able to have VGA/Composite out and an in built screen.
- I'd like to make a gamecube style controller config, similar to that of the Ashida. How can I learn the wiring needed for that? I'll be using the normal trim.
- Is it possible to be able to connect a sensor bar to the portable? Is it possible on the OMGWTF trim?
- Is it possible to have a USB input with the trim? Will I be able to use it with a USB to gamecube controller converter to plug in external wired gamecube controllers? If not, is there another way to get gamecube controllers to work?

My goal for this project is to create a dockable Wii portable that can be used as a family console and a portable, I hope this is possible.

 

[Stitches]

1. Yeah the PMS and PD series boards from 4layertech are a complete voltage regulation, battery management and charging solution. Just add cells.
2. The PMS only supports a 1S cell arrangement, so 4 cells in parallel is correct. If you connect any in series to raise the voltage, you'll kill the PMS. It is specifically designed to get the most life out of the 1S arangement and has an inbuilt step-up reg for 5v, so don't worry about the cell voltage. Any standard li-ion/li-po cells will do. If you're asking about charge voltage, any modern USB-C PD standard compliant USB charger will do. I believe the PMS will use up to 45w, but 60w is fine too for efficiency and availability.
3. The GC+2 has pinout diagrams on the 4layertech store page.
4. Yeah you can add a sensor bar easily. They're just clusters of infrared LEDs that the Wiimote's camera can see. I believe if they're at least 12cm apart they will work at close range. For couch range you might need a wider external bar that runs on 5v. You can get bettery powered ones on ebay for cheap.
5. I'm not sure of RVLoader's compatibility for USB controllers. If you want to have controller sockets, you can just wire them to the controller data traces on the Wii. The Trimming Guide has a diagram for that.