Decoding 4 buttons with two I/O’s on AVR using ATtiny12 microcontroller
Just the solution for AVR applications in which I/O is tight, such as the ATtiny12. This should work well on other kids of controllers that have independently controlled I/O direction registers, such as PIC and 6805 controllers. This is a solution was devised for those I/O limited 8 pin controllers like the AT90S2323 (though I […]
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