2018-04-09 (M) ModuKey

A prototyping board was made which had an IO expander mounted at one end and all the IO broken out next to ground terminals. The rest of the board is empty holes at standard 2.54mm (0.1”) spacing. Some connections were run through the prototyping area but they would be covered by soldermask.

Protoboard layout

A unique board was made which was intended to support different connector styles. The board had support for a four-position 3.5mm headphone jack, a 4-position RJ-45 connector, and a hole for an aviator connector which support up to eight positions. There are extra screws around the hole for support. These different connectors should allow boards to be linked by I2C at a distance by using standard cords or custom-made cords.

Breakout boards for different connectors

All the keyboards designed so far have been combined into an animated image which shows the variety of sizes and configurations. These were evaluated to be the most important designs for initial hardware testing.

All keyboards

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.

Completed projects from year 3.

Completed projects from year 4.

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