MC Cthulhu will work for Wii games that have Gamecube controller functionality (But it will also function as a PS3, Xbox 1, PSX, and PS2 controller). TvC IS gamecube controller compatible PiiWee works as a completely functional Wii controller (You will be able to browse the menus from your stick). ChImp, however, can switch between a PS3 and xbox 360 controller (Note, 360 Printed Circuit Board aka PCB required, but a ChImp is a fully functional PS3 board) without any switches. If you wanted to triple mod, You’d want to get an MC Cthulhu, Imp (a switch that changes between two circuit boards by holding down a button on startup) or DPDT switch, and 360 PCB. This is your best bet if you want PC, Wii (through gamecube support, will not be able to use as a replacement to a wiimote), gamecube, and a 360 all in one package.
However, if someone could tell me the wii equivalent wires to Data + and Data ?, then I could detail how to triple mod it with full Wii functionality (Works on all Wii games as a Classic controller AND is able to navigate the home page). Would require ChImp, DPDT switch (Or Imp), 360 PCB, and a PiiWee. (To technical personnel: using ChImp output as the Data± for 360 and PS3, then using the switch to switch to PiiWee) Only drawback is it will be a classic controller. I don’t personally know if a classic controller works in Gamecube mode of a Wii. I want to say “Well, it makes sense, so I think so.” But I don’t own a Wii, and I have enough gamecube controllers that I would never buy a classic controller anyways.
Note:Both ChImp and MC Cthulhu boards work on PC.
Also, the RJ45 input is just a useful way the community makes the controller extensions for MC Cthulhu set ups. We typically make our own RJ45>console/USB wires.
Do note, if you’re ready for it, it’s gonna get technical!