Yes, the adc keyscan approach isn't very good with many buttons, as it is limited by the adc's capabilities.
In this case, you can break the buttons up into two or even more pins with multiple r2r ladders.
Yes, the adc keyscan approach isn't very good with many buttons, as it is limited by the adc's capabilities.
In this case, you can break the buttons up into two or even more pins with multiple r2r ladders.