I'm not aware of any production version of Chordite (that this design is based on) as of now; but in the wider family of chorded keyboards, the one with a production version that I'm aware of is the Twiddler.
I'm not aware of any production version of Chordite (that this design is based on) as of now; but in the wider family of chorded keyboards, the one with a production version that I'm aware of is the Twiddler.
I was going to say I have a old twiddler 2 (wired usb). There was this program I used to learn called "twidor" that was like a type tutor but had graphic that showed you the chords. Really helpful. I didn't see anything like that in the github repository linked in the video. I guess they are up to twiddler 4 now. I read the linked chordite page and I agree that a problem with the twiddler is you are kind of trying to hold the thing steady so you can chord with the same fingers you chording with.
https://wearables.cc.gatech.edu/projects/twidor/screens.html
I don't have a program at the moment. The layout I currently use is in the codebase, starts here: https://github.com/akavel/clawtype/blob/96980f68427eb1089112... Personally, I just edited this layout description into a more compact form and printed it on a sheet of A4 paper as a cheatsheet. I do intend to make this aspect more scriptable, but didn't get to it yet.
For learning, I personally just try to slowly code simple hobby things in vim, with the cheatsheet in the other hand... I tried to make the layout relatively intuitive wherever I could. I also patiently went through all the possible combinations of presses, and tried to group them into categories of easy<->medium<->hard<->impossible, then tried to put esp. the more frequently used keys on the easier combinations/chords.