2015-07-29 (W) Wrist Mounted Chording Keyboard

A support rod was added to the back of the pieces in parallel to the common axle. This support rod was added by drilling through all the pieces and adding nuts as the rod was pushed through the holes. Adding rods produced a sturdy structure and allowed the keys to press easily but adding rods was tedious and required time consuming alignment.

Rear support rod and common axle

Changes were made to the model so the axel would use a common bolt size, #6. This allowed for less specialized hardware which was easy to find and less expensive. Simple flanged spacers were purchased as well which added distance between the pieces without the need for numerous lock nuts. For a common axel a long #6 bolt was run through the axle holes, washers, and flanged spacers. A nut was placed on the other end and left loose, a lock nut would be ideal. This arrangement produced reliable button presses.

Easy to assemble version with inexpensive hardware

To do:
  • Revise model and reprint
  • Add electronics
  • Figure a way to mount
  • Figure a way to move hinge pieces
  • Make model and OpenSCAD code public
  • Write keyboard code

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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2015-07-26 (Su)