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A comment on Anti-Ghosting. Parent comment
The alternative that I would suggest you consider is I/O expander chips so you can use any mcu with a handful of pins. MCP23 seems popular, see e.g. https://www.abelectronics.co.uk/p/54/io-pi-plus
https://eu.mouser.com/Semiconductors/Interface-ICs/Interface...
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The alternative that I would suggest you consider is I/O expander chips so you can use any mcu with a handful of pins. MCP23 seems popular, see e.g. https://www.abelectronics.co.uk/p/54/io-pi-plus
https://eu.mouser.com/Semiconductors/Interface-ICs/Interface...