A beginner's guide to split keyboards

Whenever split keyboards come up, ulnar deviation is mentioned, and non-split keyboard users are depicted to be using the keyboard like this (image from the post):

https://www.justinmklam.com/posts/2026/02/beginners-guide-sp...

I don't know if it's just me, but I don't use the keyboard like that. I know the illustration is said to be exaggerated, but still. There is no need to squeeze your hands in front of the keyboard. Just naturally bring your hands in front of chest, the same as when you are reading a book or writing notes with a pen. No twisted wrists. No ulnar deviation. The idea that you can't do something with your hand in front of the center of your chest without hurting the wrists seem like a strange supposition.

Admittedly, I've never looked at a significant number of people typing on a non-split keyboard, so I don't have the data to refute the need of this invention. I just feel like the natural posture already doesn't have the problem of ulnar deviation.

Underdiscussed: The biggest difference these keyboards make: adding additional keys for the thumbs (replacing the unnecessarily large spacebar of traditional keyboards).

This allows the hands to do more with the keyboard while resting the hands on home row. -- For users comfortable adding a bit of complexity for the benefit of increased expressiveness (e.g. vim users), having extra thumb keys allows bringing the full functionality of the keyboard to within reach of the hands on home row.

For me, I think that these keyboards fix many silly design flaws of the traditional keyboard makes them interesting enough to be worth using.

I guess I can’t fault the author for the omission, but I wish it had mentioned my daily driver.

I use the Model 100 from Keyboardio. I have two. https://shop.keyboard.io/products/model-100

When I travel I use either their version of the Atreus https://shop.keyboard.io/products/keyboardio-atreus or their version of the Preonic, which I think was only a crowdfunded model.

Keyboardio is run by a programmer who developed debilitating RSI and his wife. He tried a bunch of keyboards, then designed his own. Lots of people asked where to get one, so they refined it into a product and started the company. That was the Model 01, and I have two of those.

Having the function button located for the base of the thumb is really comfortable and useful. The swappable bases (flat linked, tented, and the separate stands) are nice to have. The link between the two halves of the models 01 and 100 uses an Ethernet cable. The stands use a standard camera tripod threaded connector, so building your own mount for a chair or armature is simple enough.

I had a warranty issue with one of my Model 01 boards. One keyswitch didn’t work reliably. Instead of sending the whole thing back, Jesse sent me four or five spare switches, some stickers, a personal note, and a page explaining I could desolder and solder the switch without voiding the warranty (as long as I didn’t damage anything in the process of course). The Model 100 is socketed.

The hardware design and the firmware are open source.

I made a gallery of split keyboards a while ago: https://aposymbiont.github.io/split-keyboards/

It is missing some newer designs, but it at least shows that not all split keyboards are tiny things with half the keys removed.

I've been using an ErgoDash for 6 years. I have one at home and another at work. If there had been a similar keyboard with real F-keys in 2019 I would have chosen that instead, but it's only a very minor annoyance.

If I was looking now I think I'd buy the Kinesis Advantage360 (I could keep using the layout I am now used to) or Kinesis Advantage2 (dished, but has fewer keys than I'm used to).

(If anyone keeps up-to-date with split keyboards etc and wants to take over the gallery site, just let me know. I'm happy with the keyboard I have, so I don't spend time researching more.)

I'm not sure why nobody mentions this, but for windows and linux, you can fiddle with a "split keyboard" by using two keyboards. You can put your right hand over the right part of the right keyboard, the left and over the left part of left keyboard, and ... type away. It just works, and usually it is free, almost everyone I know has a pile of keyboards somewhere.

Irritatingly, this doesn't work by default on the mac where the meta keys only affect the keys on the keyboard owning the depressed key (IE left shift and right keyboard l will not result in L).

It uses a bit more desk space, but is otherwise a pretty good way to test out "do I want a split keyboard?"

The issue with kinesis and all those nice small symmetrical keyboards is that not every alphabet is as short as English.

Russian, for example, has 33 letters.

So if you’re someone like that, you really want that ordinary macbook-like number of keys = larger non-symmetrical right half.

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As for the ortholinear keyboards, I spent a few months with the latest kinesis but sold it eventually: not that comfortable.

Just clench your fist and you will see that not all your fingers are moving in straight parallel lines. I don’t buy the ortho logic at all. I would argue that left half of the ordinary keyboard is even more ergonomic in this sense.

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Also don’t bother with dvorak, qwerty is 80/20 pareto stuff. Just isn’t worth it compared to returns.

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Tdlr; split, traditional layout https://uhk.io/ is my best purchase: use it for almost 5(?) years. Modded it for swappable switches, lubed, what have you.

Don’t waste money for uhk riser, not worth it. Small plastic built-in legs are more than enough.

Wooden palm rest is a must though.

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Previously was a big fan of microsoft split ergonomics (2nd gen and sculpt later)

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BTW if you use multiple OS, map the ctrl key on windows/linux to the same place where command is on mac. Shortcuts will be the same physical keys, also it is much more comfortable to have this pressed with a thumb instead of a pinky.

Though you would want to buy a rounded key cap (like a spacebar) of you use a mechanical keyboard — it is painful to press the keycap corner with a thumb if it is not rounded.

Maybe I am the odd man out here but I have a Kinesis 360 Pro and legitimately my wrists and hands hurt after using it, vs my 60% tkl that I just move around throughout the day.

Does anyone know a google-able term for split keyboards that have doubled keys down the middle column (B/N, G/H, T/Y, 6/7)?

I see one instance on this page of a keyboard with double "B" key ("Alice layout"), but not the others.

I've been interested in trying a split keyboard, but I like to type those middle keys with either left or right hand depending on the moment, so all the split keyboards I've tried have ended up somewhat annoying, for that reason.

This article doesn’t mention my absolute favorite split keyboard : the Keyboardio Model 100. The killer feature for me is the palm keys that are very ergonomic, in my opinion, and I’ve never found another keyboard that offers them. The sculpted keycaps are also nice.

I am an owner of a Glove 80 and I cannot overstate how benefitial it was for me. It improved my typing speed and overall comfort. Also, it forced me to type correctly, using all my fingers and place them in the correct keys.

To this day I think this is one of the best pieces of hardware that I bought.

My wife bought for me MoErgo80 for Christmas and now I probably look like retard on Teams typing two sentences for 5mins. But it looks nice. Feels nice. Configurability is great. I configured most used Rider shortcut for formatting file via they editor and it is even easier then normally. But the learning curve is terrible. And it is even worse when you constantly changing the layout because you are not happy - and you have to learn it again. So it is a bit like being audiophile versus listening just for fun.

No mention of the Kinesis Advantage 360? I was lucky and scored two of them for free, one from the ergo center at my employer, and one from a generous coworker who didn't vibe with his.

There are a lot of keyboards I'd like to try, but I'm pretty happy with these.

I resent the idea of an absolute standard of ergonomics or typing technique. I often use my left thumb to key z/x/c/v/b. I often reach with my left index finger to key y/h/b. During certain chords, my hands often cross over the split.

I tried multiple split keyboards over the period of 2 years and never grew out of these habits. I always wished, at the least, that some of the middle keys were duplicated between the two halves.

Eventually I received some permission to accept my personal "kinetic signature" (so to speak). Then the chronic wrist pain that led me to try split keyboards in the first place vanished. So I went back to using a normal tenkeyless. This led me to believe that split keyboards were ideal for some people, but that other people (like myself) are predisposed to a sort of perfectionism that entails physical guarding and chronic pain.

I still wish I had a wireless split keyboard for times when I'm supine and need to type, though.