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:

• Wrist Mounted Chording Keyboard. All STL printing Files. If you want to print.
• Parts for index, middle, and ring fingers. 
• Parts for pinky finger.
• Thumbboard.
• Servo lever.
• Wrist base.
• Left-handed Wrist Mounted Chording Keyboard. All STL printing Files. If you want to print.
• Parts for index, middle, and ring fingers. 
• Parts for pinky finger.
• Thumbboard.
• The servo lever and wrist base are the same as the right-handed version
• Wrist Mounted Chording Keyboard. All OpensCAD Files. If you want to make changes.
• Parts for index, middle, and ring fingers. 
• Parts for pinky finger.
• Thumbboard.
• Servo lever.
• Wrist base.
• Arduino Code for wired keyboard
• Spreadsheet for chords.
• Pdf
• Excel

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)