Pete Johanson15h ago

A @zephyr driver that's been a long time coming... https://github.com/zephyrproject-rtos/zephyr/pull/106336

RGB support on stm32 has been a frequent request from that small subset of folks running #ZMK on wired boards. Rarely had the SPI based driver worked with the pins used by most designs, so when I saw https://github.com/zephyrproject-rtos/zephyr/pull/88671 get merged, I immediately jumped into an led_strip driver using it!

It's fairly straightforward, using DMA to feed in a sequence of compare values that correspond to the necessary bit value to send.

drivers: led_strip: Add WS2812 driver based on STM32 PWM + DMA by petejohanson · Pull Request #106336 · zephyrproject-rtos/zephyr

Implement an LED strip driver for WS2812 and and compatible LEDs using DMA to load compare values for the 0/1 bits for that protocol. This is a continuation of the discussion from #88671 (comment) ...

GitHub
Atemu2d ago

Wer nannte es eigentlich zmk-nix und nicht corne-flakes?

#zmk #nix #corne #nix_flakes #flakes

Show threadPete Johanson2d ago

@ajit_456 our #ZMK codebase runs on a myriad of hardware platforms, including interesting DMA ADC workflows for HE/EC designs, settings storage over all sorts of different flash controllers, different underlying bootloader integration, etc. It's not always perfect, and there are occasionally times when platform specific work has to happen, but those are definitely *exceptions* and not the norm.

Of course, the details vary a lot depending on your specific project.

Show threadPeter CockMar 18

@AAMfP I found https://github.com/eswai/zmk-naginata very easy (but I already had plain ZMK working; current advice is target #ZMK v0.3, main branch still in flux).

On the other hand, there is https://github.com/eswai/qmk_userspace which I think I got to work months ago - but the details are not fresh in my mind. The whole #QMK user space upheaval was still settling.

I focused on ZMK as I was doing my first Bluetooth keyboard.

GitHub - eswai/zmk-naginata: ZMK 薙刀式

ZMK 薙刀式. Contribute to eswai/zmk-naginata development by creating an account on GitHub.

GitHub
Milka64Mar 18

Le voilà enfin mon Lily40 !
oui, j'ai viré des touches, j'ai l'droit non ? 😆 J'suis sur que ça va faire plaisirs à @fabi1cazenave
Un grand merci à @pyaillet pour le design des pieds.
#ergonautes #zmk #lily58

EDIT: j'ai oublié de préciser que le layout utilisé est #ergol

Michael GuntscheFeb 28
@petejohanson a quick #zmk question you might be able to answer :). I am experiencing a strange &lt behaviour where I am quickly typing lt-key, key and for the second key the second layer is still active. I am not sure how to mitigate this. For me it seems like that the hold time is extended after the first key press, even if the layer key is no longer held.
smeikxFeb 27

When using Blender I’d like to keep my right hand on the pointing device (pen or mouse) and the other on the keyboard.

But I use a steeply tented split keyboard, and a few keys I need regularly are on the right half; with a flat keyboard I’d reach over to the other half, but because of the almost 90° tenting this is difficult and slow.

I think I will try solving this issue by making one key flip the two halves (temporarily).

What do you think, how would you approach this problem?

#blender #blender3D #b3d #mechanicalKeyboard #mkb #splitKeyboard #ZMK #QMK

Peter CockFeb 20

Thought I might unwind Friday night by tinkering with my #MechanicalKeyboard firmware - there are RGB LEDs that could be twinkling for me ⌨️✨

But no, new mysterious build failures & discovering and reporting out-dated documentation referencing the older #Zephyr that will need updating for #ZMK v0.4 😅

Hopefully this will just make it all the sweeter once it works?

Show threadPeter CockFeb 8
Turns out there are still some major caveats to using the #RP2350 in a #MechanicalKeyboard on #ZMK with Zephyr 4.1. Roll on ZMK supporting Zephyr 4.3?
Show threadPeter CockFeb 6

Mixed news on my current #MechanicalKeyboard project - certainly a learning experience 😅

Good news: I have the wired #SplitKeyboard working (currently on #QMK firmware with Vial). Early days but seems comfy.

Mixed news: #ZMK firmware was working last night, but I broke the build somehow while tidying up my changes.

Bad news: it has been 0 days since the last #TRRS cable short circuit issue (a known issue but these remain a default low-tech way of linking two halves of a split keyboard). You get a scary warning on macOS about excessive current drain, and that the USB has been disabled untill removed and reconnected (or rebooted?)