I added a trackpoint to a corne-cherry (crkbd) keyboard for ergonomic pointing bliss!
Build details: https://github.com/joh/crkbd-trackpoint
Ergonomic, split and other weird keyboards
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 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.
This subreddit is not a marketplace, please post on r/mechmarket or other relevant marketplace.
Super nice!
How much did you pay for the trackpoint and shipping? It's great to hear that you can just email Sprintek!
Nice that the RP2040 doesn't require a reset circuit! I just finished a handwired with a ATMega32U4 ProMicro where I needed to remove a resistor to clear the D5 pin for USART. That was quite a painful process overall. This seems significantly easier!
Thanks! I paid $28.55 per SK8707 module + shipping (around $22 to Norway).
Ok, I gæs it'd be about the same shipping to Denmark. Compared to sourcing from ThinkPad keyboards, I find it very appealing to not have to risk popping the pin pads of the pcb when desoldering the keyboard ribbon cable. I've caused a few casualties.
Edit: Ah, I see you had to undsolder a ribbon cable from the controller board, too.
You don't have to desolder the ribbon cable. You could use some sort of ribbon cable connector, if you have one available. But I found it more practical to only have the wires I needed. And desoldering the ribbon cable was fairly straightforward.