• Project overview
• Pictures
• Schematic
• PCB
• Software
• Configuration
• References
• Disclaimer

Project overview

Wii-USB

Specifications

• USB HID Compatible. No drivers required on most systems (Win7, Win8, Win 8.1, 32&64 bit, Linux)
• The connected peripheral can be changed on the fly.

Joystick mode (default)

• Supports the Nunchuk, official version and clones, at its full resolution (8 bit for th eXY joystick and 10 bit or the accelerometers)
• Supports the Wii classic controller (Tested RVL-005 and RVL-005(-02)) and clones (such as the HORI Battle pad for Wii U). By default, the analogic L slider is disabled. Hold HOME for 3 seconds to toggle between enabled/disabled. (Required to complete button assignment in many games)
• Partial support for the Wii motion plus. Connecting a peripheral to the Wii motion plus is NOT supported. Yaw, Roll and Pitch speeds scaled down to fit in the 10 bit USB report which severely limits precision.

Mouse mode (Since version 1.2)

• Note: This mode must be enabled using the configuration tool
• Supports the Nunchuk, official version and clones. Joystick: Pointer. Scrolling is possible by pressing C while moving the joystick.
• Supports the Wii classic controller (Tested RVL-005 and RVL-005(-02). Left stick: Pointer. Right stick: Scroll.
• Configurable: Divisor (controls speed), dead zone, scrolling threshold, invert scroll direction.

Applications

• Playing with a single hand is possible. The other hand is therefore freed and usable to drink wine or use a smartphone while keeping a distracted eye on the game (especially during "grinding" in RPG games).
• Not being required to use two hands also allows one to assume postures that would not have been possible otherwise such as playing with an arm relaxed, far from the other hand, hanging below the chair...
• Playing with either hand is also surprisingly easy.

• Only two buttons is not much. Luckily for NES games, the missing buttons, start and select, are not used too often. Using the keyboard to control these is not too inconvenient though.
• The accelerometers are not very useful at the moment.

Ready to use adapters available

Pictures

Development setup

Official Nunchuk

Wii MotionPlus

Official classic controllers

Nunchuk clones (Wired and wireless)

Finished adapter

Schematic

MCU and USB

Wiimote connector

• Cut an extension cord. (There are a lot on eBay and they are cheap)
• Use an equivalent connector (Sold in my online store)
• Use the connector from a damaged Wiimote. (On eBay, just search for "broken wiimote")
• Using no connector is also possible. Just cut the Nunchuk / Classic controller cable. (Only recommended when installing/building the circuit inside a controller)

PCB

Multiuse pcb2

Wiring instructions

Wiimote connector pinout

Pre-assembled and pre-programmed PCB available

Software

This project is also available on GitHub!
To request features, report issues or contribute, you may send me an email or use the GitHub repository:
https://github.com/raphnet/wusbmote

• Atmega8: The *-m8-*.hex or *.hex files prior to version 1.4 are for programming an Atmega8. The fuse bytes for Atmega8 are: high byte = 0xc9, low byte = 0x9f.
• Atmega168: The *-m168*.hex files are for programming an Atmega168. The fuse bytes for the Atmega168 are: high=0xdd, low=0xd7, extended=0x01

Configuration

• The parameters configured with the tool are saved in the adapter and will be restored the next time the adapter is used.
• This tool requires adapter firmware v1.2 or newer to work.

Help

$ wusbmote_ctl --help
./wusbmote_ctl [OPTION]... [COMMAND]....
Control tool for WUSBmote adapter. Version 1.1.1

Options:
  -h, --help   Print help
  -l, --list   List devices
  -s serial    Operate on specified device (required unless -f is specified)
  -f, --force  If no serial is specified, use first device detected.

Configuratin commands:
  --set_serial serial                Assign a new device serial number
  --mouse_mode                       Put the device in mouse mode
  --joystick_mode                    Put the device in joystick mode
  --mouse_divisor val                Set the mouse rate divisor (Higher = slower). Typ: 4
  --mouse_deadzone val               Set the deadzone for mouse mode. Typ: 5
  --scroll_joystick_invert val       Invert joystick scrolling direction. (0 = normal, 1 = inverted)
  --scroll_nunchuck_invert val       Invert scroll direction (0 = normal, 1 = inverted)
  --scroll_nunchuck_threshold val    Set the nunchuck roll threshold for scrolling. Typ: 127
  --scroll_nunchuck_step val         Set the scroll step size (Higher = more scrolling). Typ: 5
  --scroll_nunchuck_c val            Enable/disable scrolling by move + C. (1 = enable, 0 = disable)
  --scroll_nunchuck_c_threshold val  Stick deflection threshold for scrolling. (Typ: 64)

Example: Listing adapters

$ ./wusbmote_ctl -l
Simply listing the devices...
Found device 'WUSBmote_v1.2', serial '1001'
1 device(s) found

Enabling mouse mode

./wusbmote_ctl -s 1001 --mouse_mode
Setting mouse/joystick mode...command result: 0

Mouse configuration

• If the mouse pointer moves too quickly (or too slowly), speed can be adjusted using the --mouse_divisor option. Higher values result in a slower moving pointer.
• If the pointer is moving even though the joystick is centered, try increasing the dead zone using --mouse_deadzone. Ideally, this value should be kept as low as possible for better control. Note that the dead zone is applied after the scale is adjusted (--mouse_divisor). The higher the divisor, the smaller the required deadzone (if needed at all) becomes.

Permissions under Linux

./wusbmote_ctl -s 1001 --mouse_mode
Error opening device. (Do you have permissions?)

sudo ./wusbmote_ctl -s 1001 --mouse_mode
Setting mouse/joystick mode...command result: 0

References

Disclaimer