2015-08-04 (Tu) Wrist Mounted Chording Keyboard

Sometimes when I want to feel inspired to work on a project I will carry it around with me, usually in a pocket, to serve as a reminder that it still needs work. Please excuse my cargo pants. This time having a pocket full of keys, pens and a keyboard resulted in one of the switches breaking off. Hardly a tragedy but annoying.

Enough background.

A broken switch was glued back in place. All electronic components were secured again. Spare Ethernet patch cord had one end cut with 8inches (200mm) of cable. Red sheathing was cut away to expose the wires inside. Eight wires was enough to connect seven switches and a common. Common wires were connected by twisting a pair of short wires together, tinning the ends together, trimming excess wires, then soldering to switch terminals. Unused switch terminals were trimmed with a flush wire cutter.

 Broken switch

 Ethernet end held in place for operation

Ethernet ends, also called RJ45 ends, made convenient ends for this cable since they were easy to find, easy to add to an existing wire, easy to couple, not large, lock in place, and they have eight wires. Many projects in the past have used RJ45 ends and cables because of these features. RJ45 crimpers are relatively inexpensive online and ends are extremely inexpensive online.

Wires soldered to switch

To do:
  • Add electronics
  • Secure Ethernet wire with a cable clamp
  • 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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2015-07-30 (Th)