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AT328p-au GPIO pins multiplexing

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i want to know if a can multiplex gpio pins. i have to add air quality sensor, in my device but MCU dont have GPIOs left. Please recommend solution.

Nigel Goodwin

Super Moderator
Most Helpful Member
As Pommie, says, it all depends on what the other pins are doing, you may well be able to better utilise what you've got.

Even if you can't, you can't multiplex a single pin, you need multiple pins to feed the multiplexer/port expander - so you would need to move some of your existing I/O's to the multiplexed connections.
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