2015-10-21 (W) Wrist Mounted Chording Keyboard

A wrist sport band was chosen to hold everything to a forearm. In this case the sport band used hook-and-loop (Velcro) fasteners so self-adhesive fasteners were cut to length and applied to the bottom of the enclosure holding the controller responsible for the servos and proximity detector.

Hook-and-loop fastener cut for enclosure

Hook-and-loop fastener attached to bottom of enclosure

The controller was fully wired and tested so wires were routed out the sides of the enclosure through the holes modeled out of the top of the enclosure. The purpose was to make a pathway for the Ethernet cable and servo cables but they also served to make space for the power cables which were run to a micro USB socket.

Routed wires

Holes in the columns of the enclosure were sized to accept a #6 screw so black colored screws were purchased. These 1” screws matched the color of the enclosure but any #6 screw would have worked. Anyone will be able to download the OpenSCAD code for this enclosure and modify the code to make the screw holes in the columns any size that is convenient.

Closed up enclosure next to screws

Black liquid tape was used on the proximity sensor’s protoboard to protect the electronics and help it match the appearance of the rest of the item. The red Ethernet cable was left red.

Protoboard before coating

Protoboard after coating

Front of protoboard with liquid tape

Downloadable Files:
To do:
  • 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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2015-10-19 (M)