2015-09-26 (Sa) Wrist Mounted Chording Keyboard

Servo and hinge arms will have to be refashioned for the new keyboard. Previous versions, shown below, were short and highly specialized shapes. New version will still need specialized shapes but they should be mirror images of one another.

Old model of levers

Updated levers were modeled as entirely straight and 40mm longer. The new keyboard will likely be held in place with magnets, another feature taken from the 3rd Hand project previously mentioned so the base can be simpler which should make the next update to the levers easy.

Straight levers for servo and hinges

Downloadable Files:
To do:
  • Wrist mount
    • Servo arms
      • 40mm longer
      • Straight
      • 2 hinged
      • 2 servo ended
    • Program
      • New times for servos. 500µS to 2500µS
      • 3000µS to stop
      • Potentiometer input, A0
        • Speed. 1-100
        • Refresh once positioned
    • Terminal board
      • Short wires
      • 2 servo connections
      • Screw terminals for wrist switch
      • Potentiometer
      • Input voltage
        • USB
        • 6-15volts
    • Make base for keyboard
    • Integrate:
      • Servos
      • Enclosure for each controller
        • Potentiometer access
      • Limit switches
      • Activation switch
      • Power connection
    • Debug 
    • Test
    • Refine
    • Repeat
  • Write instructions
    • Compress and link to all files
      • OpenSCAD files
      • STL models
      • Arduino code 
    • Make diagram with every part labeled 
    • Schematic for servo controller

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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2015-09-25 (F)