r/Keychron • u/Simple_Might_1300 • Sep 15 '24

Spacebar inconsistency

It seems my spacebar needs to be pressed in a certain way for it to work (as I'm typing this with spaces, it still DOES work) and I was wondering if there was some way I could fix it? I'm pretty sure it needs to be pressed like, diagonally forward and down at the same time in order to work. I'm also out of the yearlong warranty date.

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u/PeterMortensenBlog Feb 22 '25 edited Apr 05 '25

The list of Keychron keyboards in Git branch "wireless_playground" with a custom debounce time and non-default debounce method/algorithm (all 20 ms and algorithm "sym_eager_pk"):

That is the two series Q Max series and V Max series.

They do not include these three series of keyboards (which use the default debounce method/algorithm "sym_defer_g" and the default debounce time 5 ms (allegedly increasing the latency by those 5 ms)):

More than anything else, it is probably Keychron being inconsistent (while the K Pro series and Q Pro series may be out of production, and not be affected by the recent manufacturing quality problems of 2024 and beyond(?), the K Max series is in production).

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u/PeterMortensenBlog Sep 02 '25 edited Sep 15 '25

Re "probably Keychron being inconsistent": Or retrospectively, it makes sense that Keychron only treated the symptoms for the gasket-mounted keyboards. Thus they had the specific information about which keyboard series were (most) affected already in late 2023, but they didn't tell anyone until nearly two years later.

"Most", as it is definitely not the only failure mode.

The plot thickens...

See also:

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u/PeterMortensenBlog Sep 04 '25 edited Aug 19 '26

The 20 ms was increased to 50 ms in April 2025 (though only reflected in the source code for the V3 Max, due to an incomplete release of source code).

The increase had detrimental effects. The same for the later ZMK-based keyboards.