Key interference
(References to this diagram) https://docs.typeractive.xyz/build-guides/corne-wireless/troubleshooting
My "lower" key momentarily switches my LWR layer (layout). That LWR layer has numbers in the top row. As I'm holding the "lower" key, all keys in the first row type the assigned number in the LWR layer but the "r" key (for the number 4). That "flickers" the layer back to my BASE layer (letters) and I end up with an r character instead of a 4 character (video).
I assembled this keyboard a long time ago and this didn't happen until recently. Immediately I thought it could be a hardware/solder issue, specially since it started happening out of the blue. However, both keys work fine in isolation, it's just the combo that doesn't work, so I'm not sure exactly which solder point would be failing.
I moved switches around and now I can get the "4" character out of the combo, but I still see the same flicker on the screen, so I'm guessing it may eventually fail again.
Any idea what my failure point might be?
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1 Reply
It sounds like you're experiencing a key interference issue, which is often related to hardware problems, particularly with the solder joints or the connections between the nice!nano and the PCB. Since you've already tried moving switches and confirmed that both keys work fine in isolation, here are a few steps to help diagnose and potentially resolve the issue:
1. Check Solder Joints: Inspect the solder joints for both the "lower" key and the "r" key. Look for any cold solder joints or signs of poor connections. Reflowing the solder on these joints can sometimes resolve intermittent issues.
2. Inspect Diodes: Each switch has a diode that prevents ghosting. Ensure that the diode for the "r" key is correctly oriented and soldered properly. If the diode is faulty or not making a good connection, it could cause the flickering issue.
3. Check for Shorts: Use a multimeter in continuity mode to check for any shorts between the pins of the "lower" key and the "r" key. A short could cause unexpected behavior when both keys are pressed simultaneously.
4. Review Keymap Configuration: Double-check your keymap configuration to ensure there are no conflicting settings that could cause the "r" key to trigger the BASE layer unexpectedly.
5. Firmware Update: If you haven't already, consider updating your firmware to the latest version. Sometimes, bugs in the firmware can lead to unexpected behavior.
6. Test with Different Layouts: If possible, try testing with a different keymap or layout to see if the issue persists. This can help isolate whether it's a hardware or software issue.
If you've gone through these steps and the problem persists, it may be beneficial to reach out for further assistance. You can reply here if you have more questions or need additional help!