this post was submitted on 28 Jul 2023
1 points (60.0% liked)

ErgoMechKeyboards

5829 readers
11 users here now

Ergonomic, split and other weird keyboards

Rules

Keep it ergo

Posts must be of/about keyboards that have a clear delineation between the left and right halves of the keyboard, column stagger, or both. This includes one-handed (one half doesn't exist, what clearer delineation is that!?)

i.e. no regular non-split¹ row-stagger and no non-split¹ ortholinear²

¹ split meaning a separation of the halves, whether fixed in place or entirely separate, both are fine.
² ortholinear meaning keys layed out in a grid

No Spam

No excessive posting/"shilling" for commercial purposes. Vendors are permitted to promote their products/services but keep it to a minimum and use the [vendor] flair. Posts that appear to be marketing without being transparent about it will be removed.

No Buy/Sell/Trade

This subreddit is not a marketplace, please post on r/mechmarket or other relevant marketplace.

Some useful links

founded 1 year ago
MODERATORS
 

Hey all.

I am currently prototyping a keyboard with the Seeedstudio Xiao BLE (nrf52840). I configured the shield config correctly & got it working. However, my RGB won’t turn on (followed the ZMK documentation on RGB underglow)

Does anybody have a pointer to a project that got RGB working with Seeedstudio Xiao BLE & RGB?

you are viewing a single comment's thread
view the rest of the comments
[–] Skree 1 points 1 year ago* (last edited 1 year ago) (1 children)

Are you feeding the leds with 5v or 3.3v? I've had issues with 5v and no shift registers as the led won't pickup the high state of the leddata without a shift register.

https://github.com/WainingForests/zmk-config-xiao/tree/Xiao_rgb I have successfully done LEDS just fine. Per key is a misnomer though. ZMK doesn't allow individually addressing each key. Instead, you'll be using underglow to apply effects to the whole "chain."

[–] anaumann 1 points 1 year ago

See my other response for how I am driving the LEDs :) (Works fine with an Arduino program so that is not the issue here)

It seems to me that I get this line wrong: NRF_PSEL(SPIM_MOSI, 0, 16). I would read this as "Set pin P0.16 as SPI MOSI", however I cannot find a pin P0.16 exposed on the Xiao BLE https://wiki.seeedstudio.com/XIAO_BLE/

Can you give me a pointer where I am wrong?

(my RGB pin is P1.11 / D6, so I would've assumed that I should change this to NRF_PSEL(SPIM_MOSI, 1, 11), I know that the use of low frequency pins is discouraged by ZMK docs)