|This clever device has a mouse
pointer control (black) of joystick type, and mouse buttons (blue)
as well as the GKOS keyboard (red).
The keyboard can be operated with
thumbs when the keys are facing the user. If the keypad is
facing down, its layout must be mirrored and then it is operated
by six fingers as usual.
Keys are physically connected
together so that it is possible to turn on either of the two
swiches or both. For example, the red key in the middle (B-E)
can be pressed with one finger in all thee alternative ways,
i.e. B, E of SHIFT. It is also simple enough to press all other
combinations with thumbs except A+E+C and D+B+F where index
fingers come to help.
A prototype of this IR
transmitter was built
in summer 2003 (only the upwards option for thumbs plus the
mouse controls) and it was regarded as a very practical
application. It uses the PIC microcontroller software described
in gkos.net (Remote
2: GKOS + Joystick) and is still working with the original 3
S. Tiainen, 10 Feb 2010