switch-controller

Lets you control a switch from your Linux Box

Hardware

• Board with either a ATmega16u2 or ATmega32u4
  • E.g. A blank Arduino Uno Rev3 or an Adafruit ItsyBitsy 32u4
• USB to Serial Converter
  • E.g. Another blank Arduino Uno Rev3 or an Adafruit CP2104 Friend

To build and flash firmware onto an Arduino Uno Rev3:

• You will need packages dfu-programmer and avr-gcc or avr-libc.

  • To install these on a Mac with homebrew:

     brew install dfu-programmer
     brew tap osx-cross/avr
     brew install avr-gcc
    

  • On Linux Mint 19:

     sudo apt-get install dfu-programmer
     sudo apt-get install avr-libc
    

• Update MCU in the makefile to match your chip, either MCU = atmega16u2 or MCU = atmega32u4.

• make

• Follow the DFU mode directions to flash Joystick.hex onto the 16u2 of your Arduino UNO R3. Abridged instructions:

  • Jumper RESET and GND of the 16u2
  

   sudo dfu-programmer atmega16u2 erase
   sudo dfu-programmer atmega16u2 flash Joystick.hex
   sudo dfu-programmer atmega16u2 reset
  

• Install SDL2

  • To install these on a Mac with homebrew:

     brew install sdl2
    

  • On Linux Mint 19:

     sudo apt-get install libsdl2-dev
    

• Install python libraries pyserial, evdev, PySDL2, and tqdm

   pip install pyserial
   pip install evdev
   pip install PySDL2
   pip install tqdm
  

• Connect the Switch Control board flashed with Joystick.hex to the Switch and the USB to Serial converter to the Linux PC.

• Connect the the USB to Serial converter to the Switch Control board

  • Example wiring diagram using a second Arduino as a USB to Serial Converter:
  

• Run python bridge.py

  • You can see a list of available command line options with python bridge.py -h
  • If using a PS3 controller you may need to press the PS button before the controller sends any inputs.

Credit and Thanks

• Thanks to @wchill for his work
• Thanks to https://github.com/ebith/Switch-Fightstick and https://github.com/mfosse/switch-controller