chimera ergo 42

sunday, 17 february 2019

foregoing steno, a dedicated BEAKL Si layout can be applied to an ergo keyboard design with non-linear rows. The Chimera Ergo 42 is one such design that recently caught my eye..

Chimera Ergo 42

The above stock image (to be replaced with my build soon :-) illustrates the more relaxed fingering positions. How much more relaxed? Time will tell, as this will be my first ergo keyboard which, I am certain, will feel different if not awkward after a lifetime of hammering on straight keyboard rows.

The other major difference to the Splitography (aside from wireless) is the two extra thumb keys, whose locations shift the Toggle Layer keys to the extended pinkie finger positions – neither here, nor there, impact wise, who knows, the ergo layout may lend itself to a pinkie extension or two.

The extra thumb keys, though, do provide significant, if subtle benefits, eliminating the double key and double thumb motions to raise the Function and Mouse Layers and, more importantly, allowing dedicated Enter and Tab keys. This eliminates some of the rolling key logic for the Splitography’s Shift Space chord (Enter key) and allows further refinement of the layer key assignments with the extra thumb keys, whose differences to the 40 key Splitography are illustrated below..

base layer

the Z and Colon keys are swapped, lowering left index same finger usage. Welcome BEAKL Zi..

Chimera BEAKL 
Zi

Tap key actions for..

keycode double tap double tap (down)
Colon* “ :: ”  
Tab   repeating Tab
Backspace   repeating Backspace

*Optional (firmware build) Haskell language shortcut.

home row shift

Shift Tab is now defined with the right hand Shift. Left hand enabled Space and Enter provide work flow convenience for right handed mouse usage..

Chimera BEAKL Zi home row shifts

Tap key actions for..

keycode double tap double tap (down)
Semicolon Colon Minus  
Tilde Tilde Slash  

dot chords

map to the Base Layer Enter and Space keys..

Chimera BEAKL Zi dot chords

Tap key actions with Dot* key down for..

keycode single tap double tap
Space Dot* Space Shift
Enter Dot* Enter Shift Dot* Enter Enter Shift

*Where “Dot” is Period (base layer), or Question and Exclamation Mark (symbols layer). The chord acts as a one shot modifier, capitalizing the next keystroke after the Space or Enter.

thumb symbols and cursor

the added Backslash to the left hand permits escaping the left hand Symbol cluster..

Chimera BEAKL Zi 
symbols

Tap key actions for..

keycode double tap double tap (down)
Less Than* “ <- ” repeating LessThan
Greater Than* “ -> ” repeating GreaterThan
Percent   repeating Percent
Equal Equal Tilde repeating Equal
Asterisk Dot Asterisk  

*Optional (firmware build) Haskell language shortcut.

thumb numbers and function keys

the Modulo operator is added to the extra thumb key and the Fkey Layer is now raised with a single key..

Chimera BEAKL Zi numbers

Tap key actions for..

keycode double tap double tap (down)
Dot Colon  
Comma Comma Space  

thumb mouse

is now raised with a single thumb..

Chimera BEAKL Zi thumb 
mouse

thumb shortcuts

Chimera BEAKL Zi thumb shortcuts

Tap key actions for..

keycode single tap double tap
Paste string string Enter
XPaste string string Enter
Priv   string
Pub   string

toggle layers

the CapsLock layer right Shift transforms the Dot and Comma with the Question and Exclamation marks..

Chimera BEAKL Zi CapsLock shift

The Regex Layer melds the left Symbol and right hand Regex clusters..

Chimera BEAKL Zi  
layer

legend

Legend

Until the kit is received, this is a speculative layout for the Chimera Ergo 42. But it holds a lot of interesting promise..

»»  beakl ti revisited

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