Max Number of Simultaneous Key-Press (N-Key Rollover, NKRO, Ghosting) (2010)(xahlee.info)
xahlee.info
Max Number of Simultaneous Key-Press (N-Key Rollover, NKRO, Ghosting) (2010)
http://xahlee.info/kbd/keyboard_n-key_rollover_key_ghosting.html
10 comments
> it sometimes uppercases two
> I highly recommend that one
I'm glad that you still like it, but it's strange to me that someone would buy a mechanical keyboard because of its reliability and immaculately accurate and fast typing experience caused by precise and unmistakable feedback mechanism of a mechanical switch, and then they are suddenly okay with occasional random ghost keypresses? That's like buying a Breitling SuperQuartz watch that just lags behind a minute a day, isn't it?
You might like it for other reasons of course, but registering keypresses accurately is the minimum I expect from a keyboard, let alone a mechnical one.
> I highly recommend that one
I'm glad that you still like it, but it's strange to me that someone would buy a mechanical keyboard because of its reliability and immaculately accurate and fast typing experience caused by precise and unmistakable feedback mechanism of a mechanical switch, and then they are suddenly okay with occasional random ghost keypresses? That's like buying a Breitling SuperQuartz watch that just lags behind a minute a day, isn't it?
You might like it for other reasons of course, but registering keypresses accurately is the minimum I expect from a keyboard, let alone a mechnical one.
The keyboard feels good to type on, it's quiet enough to not make me self-conscious when using it in the office, and I enjoy the layout (lower 'backspace' key and smaller form factor).
Plenty of things to like - the ghosting happens occasionally but not enough for it to be a dealbreaker. Although I did change my vim keybinds so `:wq` and `:WQ` both save & quit lol.
Plenty of things to like - the ghosting happens occasionally but not enough for it to be a dealbreaker. Although I did change my vim keybinds so `:wq` and `:WQ` both save & quit lol.
Fair enough :)
I've found that quite a lot of cheap keyboards cannot register a T when shift-R are being pressed. If I always used the standard QWERTY finger positioning, this wouldn't be a problem, because my index finger could not be on both R and T at the same time. But when typing a word like (all-caps) SMART, I tend to use middle-index to quickly type the RT, and R is still depressed when I hit the T. So the T does not register.
Most decent keyboards don't do this, but even there I've seen exceptions. Very annoying.
Most decent keyboards don't do this, but even there I've seen exceptions. Very annoying.
A work, by being a work, makes space for that spaciousness. "To make space for" means here especially to liberate the free space of the open region and to establish it in its structure. This installing occurs through the errecting mentioned earlier. The work as work sets up a world. The work holds open the open region of the world. But the setting up of a world is only the first essential feature in the work-being to be referred to here."
Heidegger, Martin "Origin of the Work of Art."
Heidegger, Martin "Origin of the Work of Art."
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And that was why games back in the day came with a little key-binding tool that helped you figure out what keys could be pressed together, or not.
Of course back then it was a different hardware interface and the problem was usually the buffer size, arrow/keypad keys had much longer codes and locked up a lot more often.
Of course back then it was a different hardware interface and the problem was usually the buffer size, arrow/keypad keys had much longer codes and locked up a lot more often.
There are diodeless (no matrix) split keyboards (https://www.reddit.com/r/ErgoMechKeyboards/comments/1dh9o8k/...) like Cantor: https://github.com/diepala/cantor .
They use chips similar to that one: XIAO ESP32S3 nRF52840 Sense Plus - wireless, energy efficient, with 20 pins GPIO or more - one pin for one key - https://thepihut.com/products/xiao-nrf52840-sense-plus (there was an option of 16 pins extra using expander https://wiki.seeedstudio.com/io_expander_for_xiao/ - which is not made anymore, but you can use same chip MCP23017 to get that effect https://www.youtube.com/watch?v=lq6jbXaX4oQ https://www.youtube.com/watch?v=74DgM2nAeLo , up to 128 I/O pins: https://resinchemtech.blogspot.com/2023/10/IO-expander.html - in that case - 36 simultaneous inputs by hand) - and with Hall sensor keys or similar we are soon talking about _easy_ having ~40+
.. simultaneus muiltiple ANALOG inputs in "keyboards" - like in Mitt https://www.youtube.com/watch?v=Oj7HfcdJhi8 - or XBOX Controller Mods: Analog WASD Gaming Keyboard https://www.youtube.com/watch?v=gEwDImE0DU4 .
They use chips similar to that one: XIAO ESP32S3 nRF52840 Sense Plus - wireless, energy efficient, with 20 pins GPIO or more - one pin for one key - https://thepihut.com/products/xiao-nrf52840-sense-plus (there was an option of 16 pins extra using expander https://wiki.seeedstudio.com/io_expander_for_xiao/ - which is not made anymore, but you can use same chip MCP23017 to get that effect https://www.youtube.com/watch?v=lq6jbXaX4oQ https://www.youtube.com/watch?v=74DgM2nAeLo , up to 128 I/O pins: https://resinchemtech.blogspot.com/2023/10/IO-expander.html - in that case - 36 simultaneous inputs by hand) - and with Hall sensor keys or similar we are soon talking about _easy_ having ~40+
.. simultaneus muiltiple ANALOG inputs in "keyboards" - like in Mitt https://www.youtube.com/watch?v=Oj7HfcdJhi8 - or XBOX Controller Mods: Analog WASD Gaming Keyboard https://www.youtube.com/watch?v=gEwDImE0DU4 .
Edit: nRF52840 chip can have 12 Analog Inputs, ESP32S3 20 - e.g. ESP32-S3-WROOM-1 - but XIAO ESP32S3 and XIAO nRF52840 have 6 only, there are others with more pins (AFAIR up to ~128, not all analog) but more functions too - what's overkill regarding price and energy waste - not so cool. (BTW. of A beginner tries PCB assembly (2020) https://news.ycombinator.com/item?id=32549736 )
Besides that, it is my favourite of many keyboards for any non-gaming thing. the Poker II is my go-to for gaming and I highly recommend that one as well, if 60% is your thing.