Note: You can use any controller, but this tutorial will only describe the steps to do it with a gamecube controller + official gamecube controller adapter. Anyway, only the first step is related with the controller. The other steps are the same for every controller.

Special thanks to Stary2001 and @KazoWAR for this awesome tool.

Requirements:

• A 3DS with CFW and a CIA installer
• Homebrew Launcher (latest version) or NTR CFW
• InputRedirection
  • for NTR (https://github.com/Kazo/InputRedirection/releases/tag/NTR-build)
  • for Homebrew Launcher (https://github.com/Kazo/InputRedirection/releases/tag/master-build)
• InputRedirection PC Client
  • for NTR (https://github.com/Kazo/InputRedirectionClient/releases/tag/NTR-build)
  • for Homebrew Launcher (https://github.com/Kazo/InputRedirectionClient/releases/tag/master-build)
• A PC with Windows
• A Gamecube controller
• Official gamecube controller adapter
• Wii U USB GCN Driver (http://m4sv.com/page/wii-u-gcn-usb-driver)
• XPadder (http://xpadder.com/) or a freeware alternative

Recomended:

• Wireless Network Watcher (http://www.nirsoft.net/utils/wireless_network_watcher.html)

Steps:
1. Install the driver of the Official gamecube controller adapter in your pc (there's a lot of tutorials on the internet, so please google) and run it.
2. Configure Xpadder (It's pretty easy with a noob-proof GUI). Remember the keys you choose for each button.

Now you have to choose an option

NTR CFW (recommended - better compatibility )
3. In your 3DS install InputRedirectionNTR.cia.
4. Run NTR CFW, press X+Y and select "Enable Debugger"
5. Run the installed CIA.

Homebrew Launcher (not recommended - worse compatibility)
3. In your 3DS install InputProc.cia and put the 3ds folder in the root of your sd card In
4. Run The Homebrew Launcher and launch input_loader.
5. Press start and then x to return to the home menu


6. Now in your PC, go to the PC Client and open InputRedirection NTR.exe (InputRedirection .exe if you chose the HBL option)
7. Press F1 to set your 3DS IP address (use wireless network watcher or ftpbrony to know it) and then ESC
8. Press F2 to set the key for each button of your 3ds (you can use Xpadder to remember what keys you used for the gamecube controller). To do it, first you have to press the pre-selected key, and then press the new key for each button. Once you're ready press ESC.
9. Test the controls (also, you can press F4 to show debug information).
10. Enjoy


Proof:

 

[Giodude]

noooo i cant play smash with a gamecuube controller cuz i hav an old 3ds and it reboots when i launch smash

This is severely outdated. Do you have b9s with Luma 8.1?

 

[HeroOfTime993]

This is severely outdated. Do you have b9s with Luma 8.1?

yes i do

 

[Giodude]

yes i do

Open up the rosalina menu and start input redirection. Use this client instead of the original client: https://github.com/mastermune/InputRedirectionClient-Qt/releases/

 

[HeroOfTime993]

Open up the rosalina menu and start input redirection. Use this client instead of the original client: https://github.com/mastermune/InputRedirectionClient-Qt/releases/

thanks but i want to use an xbox 360 controler so will it still be the same steps?

 

[Giodude]

thanks but i want to use an xbox 360 controler so will it still be the same steps?

Even easier, dont follow this guide. Just do what i said.

 

[HeroOfTime993]

Even easier, dont follow this guide. Just do what i said.

thanks for the help and quick replies you really helped

 

[MrMcTiller]

Does anyone know if it is possible to make something like this, but without having to use a PC or internet. I know the 3ds doesn't have bluetooth support... Does NFC work? I am a noob when it comes to 3ds hardware.

 

[Giodude]

Does anyone know if it is possible to make something like this, but without having to use a PC or internet. I know the 3ds doesn't have bluetooth support... Does NFC work? I am a noob when it comes to 3ds hardware.

No, it can't really work like that. The closest possible thing would be infrared, but even then you would have to build hardware to support it. If you want you can buy a raspberry pi for $20 and host it on that. It's essentially a mini computer with very little processing power.

 

[John256145]

Open up the rosalina menu and start input redirection. Use this client instead of the original client: https://github.com/mastermune/InputRedirectionClient-Qt/releases/

I can't get this to work for the life of me. Although the touch screen works, no matter what buttons I configure, it does not work with the Gamecube controller

 

[ChilledShake2002]

Can I use a Xbox series X controller instead of circle pad pro ?
I own o3ds xl which doesn't come with the second C-stick. So I'm planning on using my series X controller after reading this.

 

[AC1DFOX]

This would be awesome!! I have to try this.

 

[Esppiral]

I am trying it on my Old Nintendo 3DS, and I can't find a way to use my controller as an C pad, it is not possible? the main reason I want to use this it so I can play games that rely heavily on the second stick.