From GameBrew - a wiki dedicated to Video Game Homebrew.

TypeOpersting System
Version1.01 (r44)

DS2Key is an application for Nintendo DS that allows you to send key signals to your PC thus emulating a PC game pad. Utilizing the touch screen you can also control the PC mouse.

Note: The link is for 1.01 (r44) only. Latest release DS2Key SVN r52 has been rewritten in C++, which contains less features and you can find it here.


  • Action Buttons (Normal button input, a, b, left, right, etc).
  • Exact Mouse movement (Touching the middle of the touch screen sets the cursor on the Middle of the PC screen, etc).
  • Mouse Touch Screen buttons (The screen is divided into having 12 buttons working similar to the normal buttons).
  • Guitar Hero Grip buttons (All four buttons act the same as the normal buttons, but have their own settings).
  • Mouse Clicks (Left, right, and middle buttons).
  • Linux Support (All functions work as they do in Windows now).
  • Windows GUI Support (Very friendly GUI).


Download and extract ds2key.nds to your apps folder.

Run ds2key from the apps menu in your DS-X.

Known issues

Mouse input doesn't cover entire screen -- deadzone borders need to be made for the touch screen.

GUI log is disabled - log caused lags, disabling command logs should fix this

Setting mouse button clicks in the GUI doesn't work - mouse clicks actually work, just setting them up in the GUI doesn't

After changing the IP on the DS, the server ends up sending /p? repeatedly - restarting the DS makes everything work fine

Arrow key settings actually send numpad arrow keys, or numbers, depending on numlocks status

Setting GUI log to "All Messages" causes lag. This log mode is mostly for testing your connection, just switch the setting to something else and it will run lag free


Version 1.01 (Revision 44) January 20, 2009

  • Fixed bug with arrow keys sending numpad keys (2, 4, 6, 8).
  • Fixed GH Pad repeat bug reported blahblahblaster from
  • Fixed CPU usage with server console versions.
  • Fixed repeated sending of "/p?".
  • Fixed a bug with the mouse cursor sending negative values, causing wrapping in the linux version.

Version 1.00 (revision 38) December 30, 2008

  • Rewrite from scratch.