3DSUSBController

3DSUSBController-Homebrew
General
Author	jcrm1
Type	Utilities
Version	1.0
License	MIT License
Last Updated	2022/07/25
Links
Download
Website
Source

3DSUSBController-Homebrew is a three-part software system that allows you to use your 3DS as a cross-platform USB gamepad1. It requires Java and a Teensy development board (or board with USB Serial and Joystick capabilities that can be programmed using Teensyduino)1. The system consists of three parts: 3DSUSBController-Server, 3DSUSBController-Homebrew, and 3DSUSBController-USB-Device.

Setup

1. Follow the steps in each repo (3DSUSBController-Server, 3DSUSBController-Homebrew, 3DSUSBController-USB-Device) to build/install all required software.
2. Connect Teensy to computer
3. Start server (java -jar *.jar <Address> <Port>)
4. Start homebrew
5. Enter address and port of server on 3DS (Example: 192.168.1.12:8080)

You can exit by pressing Start and Select simultaneously (button down on same frame). I recommend spamming to get it right. You can use the touchscreen as the IR pointer in Dolphin. I use this as the input expression for Hide: Full Axis 2+` > 0.99999 | `Full Axis 3+` > 0.99999

Building

(requires devkitPro 3ds-dev):
make

Changelog

(v.1.0)

• First Release.

Disclosure

I did not know C when I made this project. I went back and cleaned it up a bit, but it's entirely possible that there are glaring errors or bugs in this. However, I have not yet had issues with it.

External links

• Reddit - https://www.reddit.com/r/3dshacks/comments/w7gcm1/3dsusbcontroller_homebrew_to_use_your_3ds_as_a/
• Github - https://github.com/jcrm1/3DSUSBController-Homebrew
• Gbatemp - https://gbatemp.net/threads/release-3dsusbcontroller-homebrew-to-use-your-3ds-as-a-usb-game-controller-works-with-dolphin.615948/