c/ergomechkeyboards · by joh@lemmy.world · 2y

crkbd trackpoint

I added a trackpoint to a corne-cherry (crkbd) keyboard for ergonomic pointing bliss!

Build details: https://github.com/joh/crkbd-trackpoint

140 points · 19 comments · view on lemmy.world

19 Comments

jenny_ball@lemmy.world · 6 pts · 2y (1 reply)

ur an insane person but i like your style

joh@lemmy.world · 3 pts · 2y

Thanks, I guess? :P

sntx@lemm.ee · 6 pts · 2y (1 reply)

That's awesome!

Now I really want to replicate something similar in a future keyboard I build.

joh@lemmy.world · 2 pts · 2y

Thanks! :)

wolfwood@lemmy.world · 4 pts · 2y (1 reply)

the readme says that your firmware enables pullups on clock and data lines but i don't see that code in your keymap?

joh@lemmy.world · 5 pts · 2y

Yes, you're right, I changed the PIO driver directly for that: https://github.com/joh/qmk_firmware/commit/aa0214f5b1b3001cf7cc99419c32c8b87707cb5a

I plan to make it an optional feature for qmk proper, but for now it's somewhat of a hack :)

beeng@discuss.tchncs.de · 3 pts · 2y (1 reply)

What are you using for left/ right /middle click?

joh@lemmy.world · 3 pts · 2y

I'm using the thumb cluster keys.

humanplayer2@lemmy.ml · 3 pts · 2y (3 replies)

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!

joh@lemmy.world · 3 pts · 2y (2 replies)

Thanks! I paid $28.55 per SK8707 module + shipping (around $22 to Norway).

humanplayer2@lemmy.ml · 2 pts · 2y (1 reply)

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.

joh@lemmy.world · 2 pts · 2y

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.

mjpc13@programming.dev · 3 pts · 2y (1 reply)

I wanted something like this! I think I'm gonna give this a shot, thank you for sharing your work

joh@lemmy.world · 3 pts · 2y

Cool! Let me know how it goes :D

Isbjerg@feddit.dk · 3 pts · 2y (1 reply)

This is marvellous. Thank you. I will save this link and make my own!

joh@lemmy.world · 2 pts · 2y

Thanks! Let me know how it goes :)

Prunebutt@feddit.de · 2 pts · 2y (1 reply)

Amazing thing that my ADHD ass wants to replicate with my piantor but will never have the time to.

Thanks, full time job! /s

joh@lemmy.world · 3 pts · 2y

The piantor looks like a nice piece of kit! Unfortunately the PCB doesn't seem to have any holes to accommodate a trackpoint. There even seems to be a trace right between the YUHJ keys, so drilling a hole is not possible either.

hymenopterror@lemmy.world · 1 pts · 2y

i need this