An STM32F411 (LQFP64) based module for Software Development and A Bare-bones Keyboard PCB with 99 Keys and Rotary Encoder.
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Hardware: Micro, Keys, etc...
Micro: STM32F411RETx
Software Support: QMK/VIA
Switches: MX type hot-swappable
Keys: 99 Keys, including 10 Dedicated Macro Keys
Rotary Encoder: Volume / RGB.
Tools:
Other references:
keyboard-layout-editor.com
Will publish Kicad files and Code later...
Echo Keyboards
As I'm working on several keyboards, I grouped them under the brand name Echo Keyboards...
Models are:
News:
Finally worked out how to use keyboard-layout-editor.com correctly to generate the required code, I was just copying the raw data instead of downloading the json file which made life more difficult...
This link solved most of my problems: https://www.caniusevia.com/docs/layouts
I have created a new git repo for the current code: here
Received two prototype (populated) boards in post. Preliminary test went well, everything appear correct, including the code for the new 6 x 17 matrix layout as opposed to the 10 x10 matrix used in my original Blackpill keyboard.
I failed to notice that QMK supports 25xx-series for SPI (and 24xx-series for IC2) so the current test EEPROM footprint needs changing.
As noted earlier, the new dev board are designed to use a 6 x 17 matrix and the QMK keyboard files require updates to reflect this. After updates to the code, the keyboard generate the correct codes but the layout in usevia.app needs a little work, the Enter key is not in the correct position ++
Adding more to options board...
Added optional program header, connections for MISO, MOSI, SCK and SS
Michael O'Toole
davedarko
Mx. Jack Nelson
deʃhipu
Oleg Utkin