Comment Comment by thro1 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 . parent thro1 11 months ago
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 .