deskthority

It looks like Teensy 3.2 has 34 digital pins, good for your 8x23.
https://www.pjrc.com/store/teensy32b.jpg

For an even bigger keyboard, there is Teensy 3.6 with 58 pins, enough for 8x50, a whopping total of 400 keys.
https://www.pjrc.com/store/teensy36b.jpg

The largest keyboard with 58 pins ...

I purchased two breakout boards but was unable to solder wires on them cleanly. The soldering points were so close and wires tended to touch each other after some moving and bending.

Eventually I cut the cable open and used it for direct connections, not going through any logic/protocol in a ...

It’s the most wonderful time of the year, time to build another keyboard. Last year around the same time, I built a 75% split keyboard , which I’ve been using for a year. I’m quite happy with it but I need another one for my second computer, so I may just make a few tweaks as well. Below is the ...

I have been long missing the editing power of VI outside the editor, for example, when writing an email or composing a post like this in a browser. Now I have a major update to the firmware of my keyboard to provide a usable VI-like editing environment almost everywhere. The idea is as simple as ...

Yes, that is a Lego piece stopping Teensy. It works very well.

My 3D printer is FlashForge Creator Pro. The nozzle diameter is 0.4mm according to the spec. I use FlashPrint software that comes with the printer and so far I haven't change any defaults. The layer height is 0.18mm and the first layer ...

IMG_20170122_124344 (1).jpg
This is my second build of an ortholinear, split and contoured keyboard. It fixes a few things that I'm not happy about the first build, which I did last month and described in this thread https://deskthority.net/keyboards-f2/a-split-curved-ortholinear-and-3d-printed ...

Is there any reason apart from price not to directly just take an Arduino instead?

Interesting... I actually don't know how much an Arduino costs. When I googled DIY keyboards, all articles talked about Teensy so I bought Teensy. Then I learnt about Teensyduino and started to talked about Teensy ...

I curved the keyboard this way to help my index fingers, which are shorter than my middle fingers and ring fingers. I assume staggered columns can help too and I may give them a try in my next build.

I actually started 3D modeling with a bowl shape, i.e. curved rows and curved columns. During my ...

My experience with Teensy 3.2 is very positive as well. I wrote my own firmware (https://github.com/macroxue/keyboard-firmware) with Teensyduino (http://www.pjrc.com/teensy/teensyduino.html), which is Arduino IDE integrated with Teensy support.

The Layout
Like many others, I started looking into better keyboards when my fingers and wrists got tingling and stiff after a full day of programming. I learned about RSI and bought ergonomic keyboards like Microsoft Sculpt and Kinesis Freestyle. The keyboards do help but they still have some ...