trialyzer VS splitKbCompare

Regarding your future plans, take a look at the trialyzer project. They follow a similar approach as far as I understand.

This is a table of trigram categories. The full explanation is here but we are interested in the sfs subcategories, which is my name for a DSFB in trigram form. sfs.alt is an alternating DSFB, the others are various forms of same-hand DSFBs.

As part of an analyzer, I typed a few thousand trigrams and measured the median speed of each. Here are the results. Each point represents the median speed of one trigram, broken down into bigram parts (the breaks down into th and he, which don't necessarily take the same amount of time each).

I actually made a whole layout analyzer based on physical experimental measurements of how quickly you can type various trigrams. Some sfbs were definitely slower than others, as you predicted, but all of them were far worse than non-same-finger sequences. The highest rated layouts (with the fastest speed ceilings, therefore the least strain required to reach any given slower speed) all had SFB frequencies of about 1.2% or lower, even when the heatmaps were a bit wonky--for a while, the top scoring layout had t in the qwerty v position. But it had less than 0.8% sfb!

The tool is built in an unusual fashion - the images are in an adobe Illustrator file, and then exported as pngs for the separate layers. I suspect you can open the source files in AI and pull out the vectors your after. Here's the repo: https://github.com/jhelvy/splitKbCompare

I used a Kinesis Advantage as my main keyboard for 10 years. A few years ago I got an Ergodox EZ, but just couldn't get into it. I've been using a NiZ Atom68 as my main keyboard for over a year now and am rather happy with it. I have plans to build and try

These days I think that there are so many good community designed keyboards [0] that it behooves anyone who has the notion they'd like something better than a standard layout keyboard to do a bit of research and testing. For any keyboard layout it is fairly trivial to make a printout and stick it to your desk to get an impression of how it fits your hand size/shape and your preferred resting/neutral position.

Recently I've found Ben Vallack [1] to be an excellent resource on keyboard customization and his philosophy echoes my own, though he shows much more dedication to the craft and exploration of keyboarding than I could ever hope or wish to. He has an excellent series on designing and making your own keyboard [2], as well as well thought out explanations and explorations of creating and learning personalized keyboard layouts [3][4]. His more general explorations of usability in computing and beyond have been inspiring as well [5].

  0: https://github.com/jhelvy/splitKbCompare

Try some split layouts on paper to get an idea https://github.com/jhelvy/splitKbCompare

alright, i've informed jhelvy (via github issue) about my plan to move his useful tool to a wiki entry. so let us wait for some days before someone make the thread about keymap and stuff.

The keyboard will also be added to the split keyboard layout comparison site. It's been added in the queue.

Hi again, just wanted to update you that I've opened and issue to add Manibus to the splitKbComparison website: https://github.com/jhelvy/splitKbCompare/issues/60