2018-09-03 (M) Emergency Rotary Keyboard EmerKeyB

The first usable bit version of the code was written. The trick was to take completely different paths when the button was held. The KY-040 encoder has a button which activates when the shaft is pressed down. Encoder rotations are still registered while the button is held.

When the encoder button was held, turning the knob clockwise inserted a tab for each increment. Turning counter-clockwise is the same as pressing the 'backspace' key. This should provide the necessary keyboard functions to navigate basic screens and input passwords to a computer where a keyboard isn't immediately available.

Custom PCBs should be made in order to make a useful 'shield' which can conveniently hold the encoder to a microcontroller. A second version, and appropriate programming should also be done for a version with two buttons. Custom enclosures would also be nice.

Left to right, top to bottom: serial feedback, Device Manager, keyboard output, 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
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5

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2017-12-15 (F)