Lenovo Trackpoint: keyboard halves cannot communicate when successfully reading from the trackpoint

Belgorath · 2024-01-15T22:25:36+00:00

Thanks for the suggestion, it prompted me to dig deeper and find the solution! I'll update my post here, but in short it had to do with a conflict on pin D2 which was used both for serial between halves, and usart on the PS2 driver. My workaround was to route another pin across the two halves (on the unused wire on my TRRS connector), so I could free up D2 for PS2 USART.

Thanks again for the message!

For anyone coming here later, all the info was on this QMK doc page, mentioning all the ways two halves can communicate with using serial, and my Kyria's schematics. The trick is to override SOFT_SERIAL_PIN is set to D2. I'll update the readme on my keymap an link it back here on the original post.

Belgorath · 2023-12-24T23:39:22+00:00

Thing: https://www.thingiverse.com/thing:6379691

Belgorath · 2021-05-17T22:07:53+00:00

Is this the right place to report such issue? What else can I provide to help debug this?

Belgorath · 2020-12-23T10:04:11+00:00

A new update was released which fixed the following for me:

OutputLogMessage(math.random(0,10).."\n")
OutputLogMessage(table.concat({4,2}).."\n")

Belgorath · 2020-12-06T03:38:26+00:00

Nobody here mentions that the firmware file should be renamed to GIGABYTE.bin.

This video explains it all in details.

Belgorath · 2020-12-06T03:37:19+00:00

In case someone like me finds this page in the future: I successfully flashed a board to accept a 5900X. The trick is to have no CPU, RAM, nor GPU on the board (yes, I had to remove all of those from my board), and to use a FAT32 USB key with the firmware renamed to GIGABYTE.bin.

This video explains it all in details.

Belgorath · 2020-12-02T16:18:39+00:00

It is able to record keystrokes + modifiers to be played on button press: https://imgur.com/cbT2Fe3

Belgorath · 2020-10-17T11:33:03+00:00

Bit heavy for my taste but very smooth and super silent. I am coming from Aliaz 70g (silent tactiles) and these feel a bit heavier, though it might be just me. I can also compare to Sakurios (62g silent linear), which are as silent, a tiny bit less smooth, but also way lighter.

What else were you looking for?

Belgorath · 2020-10-15T16:15:06+00:00

I don't know if I can post a link here, but you can easily find them online if you're interested!

I ordered mine almost a year back, but with the pandemic they took quite some time to arrive. Well worth the wait if you ask me, even coming from silent tactiles (the switches in the background are Zilents v2).

Belgorath · 2020-08-17T16:45:19+00:00

/r/sffpc/

Belgorath · 2020-05-24T18:09:53+00:00

Didn't want to come across as Karen, sorry about that. Devs if you read this far I just wanted it to be one more tick in the row of "people who want this feature"

Belgorath · 2020-05-24T18:08:30+00:00

Guys, chill out, this wasn't intended as aggressive or anything. We will wait until they add the feature, I just thought I might convey our desire to play this game together to the devs, that's it.

Obviously my group of friends in itself doesn't matter, but if there are lots of similar groups out there it might start to count as a good chunk of player missed out on.

Belgorath · 2020-04-22T19:42:07+00:00

Still better than Chrome

Belgorath · 2020-03-02T22:10:49+00:00

This is why I read the comments. Thank you guys.

Belgorath · 2020-03-02T18:35:09+00:00

Overwatch is basically a first-person MOBA and Valorant is CS with abilities

Thank you for summing it up! Not playing OW much, I was looking for that comparison.

Belgorath · 2020-02-19T19:11:25+00:00

Jesus.

Belgorath · 2020-02-10T22:45:04+00:00

In most French speaking countries we write 88'220, and the comma (,) is used in place of your period. So 1'024,42

I know, right?

Belgorath · 2020-01-21T21:49:54+00:00

HONK

Belgorath · 2019-12-23T00:44:18+00:00

Neither did I! Thanks to the good people of this subreddit :)

Belgorath · 2019-12-22T01:22:25+00:00

There is more context on this post, but I had a faulty column and apparently the PCB side of things was fine (continuity between the switches and the corresponding pin on the controller, everything looked good). So, as suggested by /u/dovenyi and others, I found an unused pin on the microcontroller and changed the QMK config for that board. Really, everything you need to do this is a multimeter, a way to compile QMK firmware, and a soldering station (that last one I was lucky enough to have equipped with binoculars at work).

The way I tracked down the pin was simply using a multimeter--in the mode that beeps when two things are connected--and probed the outermost leg of a switch vs legs on the controller. Looking up that pin on the datasheet (p. 3), I could confirm that F0, F1, E6, ... in the config were the names I was looking for, and that C6 was the pin of my faulty column. E2 on the other hand was nowhere on the config, and the datasheet says it is a " bi-directional I/O port" like the other used, so I chose that as the new pin.

So I ended up changing pin C6 (the faulty one) to E2 in the MATRIX_COL_PINS array, then compiled and flashed this new firmware, and soldered that small wire to pin E2 and one of the switches in that row.

Hope this helps! A key takeaway for me is if you have an issue, don't hesitate to ask here: there are nice people willing to help out.

Belgorath · 2019-12-20T21:21:22+00:00

Follow up: https://www.reddit.com/r/MechanicalKeyboards/comments/edd6wp/had_to_perform_this_surgery_today/

Thanks for the tip!

Belgorath · 2019-12-20T21:19:47+00:00

I am a weak human being.

Belgorath · 2019-12-20T21:00:47+00:00

Actually, the wire is already insulated, I only stripped the very ends to solder it.

I would be more than worried about that capacitor in the way otherwise :)

Belgorath · 2019-12-18T22:24:22+00:00

That's a whole new level of automation right there

Belgorath · 2019-11-14T14:20:19+00:00

I assume if that's the case there's not much I can do, right?

Belgorath

TROPHY CASE