Hello fabulous fellow keeb enthusiasts! I have this really cool custom split ergo keyboard called a Dark Matter, and I think only 10 or so were made. I love typing on it, but I’m getting double inputs and the LEDs on the left side only work intermittently. Do you have any suggestions on how I could try to fix those issues? Do you think I need to resolder both PCBs entirely, just certain key switches, and/or all the LEDs? Reseating its teensy controllers did not fix the issue, for example.

Unfortunately the person who made these is not providing support for them so I’m on my own on this one.

Here’s a reddit post I made 5 years ago when I first ran into these issues:

https://old.reddit.com/r/AtomComputer/comments/9rc2ep/leds_and_doubleiinputting/

I’d appreciate any advice you can offer, thanks so much!

  • Xyre
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    4 months ago

    It’s hard to tell if it’s a similar cause, but I had issues with double-inputs and occasionally keys would work intermittently on my Dactyl Manuform.

    After getting frustrated enough having resoldered it several times, I hot-glued the PCBs to the case. The thinking that small movements during a key press was causing the contacts to be broken. Everything has been working great ever since!

    If you want to be cautious and have a multimeter, you could also check the connections between the keys. That might help isolate where to focus your efforts.

    • ditty@lemm.eeOP
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      4 months ago

      Will do, thanks so much! And good tip about the Glue! I have noticed on the left half (which is the side with the intermittent LED issue), that if I flex the assembly a smidge I can get the LEDs to come on, so it probably is a bad solder joint somewhere or something