Search found 7 matches

by crc
08 Feb 2016, 07:57
Forum: Workshop
Topic: [Tutorial] Reversing a keyboard matrix
Replies: 5
Views: 14695

Thanks for this useful guide! I used it this weekend on a Matias mini quiet pro keyboard. One thing I would like to point out is that for keyboards with diodes on one of the pins (for n-key rollover) the polarity of the multimeter pins matters (at least it did on my old fluke 70 meter). Instead of a...
by crc
07 Feb 2016, 10:18
Forum: Keyboards
Topic: Custom controller for Matias keyboards
Replies: 5
Views: 2806

I finally got some time to work on this and was able to reverse engineer the pinouts for the 18x8 keyboard scan matrix. Details are posted in this google sheet in case someone is interested in collaborating (or going solo) in making a replacement controller board. Since this is going to be my first ...
by crc
03 Feb 2016, 03:23
Forum: Keyboards
Topic: Click sound on top edge key presses with quiet click switches
Replies: 0
Views: 797

Click sound on top edge key presses with quiet click switches

I had noticed that the quiet click switches on my matias mini pro make a much louder click sound when pressing down closer to the top edge of the key. Hitting the top edge is fairly rare so this doesn't bother me much. Finally got around to making a video to demonstrate this: https://www.youtube.com...
by crc
24 Jan 2016, 04:49
Forum: Keyboards
Topic: key stopped working on keyboard
Replies: 3
Views: 1834

The frosty flake firmware header files were helpful to figure out row column mapping: https://github.com/BathroomEpiphanies/costar_keyboard/blob/master/models/common.h The PCB trace for column C going from the l-alt key to the r-alt key had problems. Fixed it by using a wire to bypass it. :D L-Alt w...
by crc
23 Jan 2016, 03:09
Forum: Keyboards
Topic: Custom controller for Matias keyboards
Replies: 5
Views: 2806

Custom controller for Matias keyboards

Has anyone attempted making a custom controller PCB for the Matias keyboards? I was reading through this (very thorough) review https://deskthority.net/review-f45/matias-mini-quiet-pro-pc-t7114.html posted by user wetto and staring at the controller daughter board photo he posted... it looks like th...
by crc
20 Jan 2016, 02:24
Forum: Keyboards
Topic: key stopped working on keyboard
Replies: 3
Views: 1834

Thanks Scottc!

Shorting the switch pads did not trigger the key either. I verified that other keys were triggered by shorting.
So I am guessing that it could either be the pcb trace or badly soldered pad. Perhaps even a diode?
by crc
20 Jan 2016, 00:50
Forum: Keyboards
Topic: key stopped working on keyboard
Replies: 3
Views: 1834

key stopped working on keyboard

Hello Folks... The left Alt key on my keyboard completely suddenly stopped working a few days back. I realized it immediately because I use Alt+Tab for switching windows all the time. :cry: I bought this keyboard in Sep 2012, so its has seen 3+ years of use. Are such key failures normal/expected in ...

Go to advanced search