2015-08-24 (M) Wrist Mounted Chording Keyboard

Gavin brought up the point that the current models would not work for a left-handed keyboard. Some people would prefer to have a keyboard in their non-dominant hand whereas I would like it in my dominant hand. It should be possible to print it left or right so the models were updated since both need to be equally viable options. In the downloadable files, shown below, links have been provided to print the left-handed version as well. The OpenSCAD files were updated with instructions on how to mirror the model.

Left-handed and right-handed pieces for the index, middle and ring fingers

Left-handed and right-handed pieces for the pinky finger

Left-handed and right-handed version of the thumboard

Macros were programmed into an unused keyboard chord. Case 13, which had nothing, was programmed to print pseudo-random numbers and equations. They are not truly random numbers nor are truly random numbers necessary for this application. A pseudo-random number between 0 and 255 can be printed by simply pressing the chord pinky+middle+index. A pseudo-random number between 0 and 1, four decimal places, is typed by prefixing the above chord with the Far thumb key, like typing a capital. If the function key prefix is used three pseudo-random numbers are typed as a mathematical statement which is followed by a return.
Examples using the keyboard:




0-255
0-1
Equation



30
0.5582
209+968+3735



228
0.0748
180+625+3534



131
0.0622
67+11+2679



158
0.211
192+244+1295



57
0.6009
68+396+3692



122
0.8594
175+272+3544



87
0.5636
68+923+1709



Recent code for Wirless Keyboard with No Mouse functions

Downloadable Files:
To do:
  • Add mouse functionality.
  • Program changes:
    • Add mouse movement
    • Change mouse clicks to press and release according to buttons
    • Add random number generator
      • 0-1
      • 0-1000
      • Random equation followed by enter
  • Modify servos for continuous rotation.
  • Automate wrist mount.
  • Write instructions
    • Schematic

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.
Completed projects from year 2



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2015-08-24 (M)

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