I spent a fair amount of time a few weeks back looking at hardware debouncing for multiple quadrature encoder's inputs to a low power MCU. I didn't want to spend clock cycles working out if a mechanical encoder output was bouncing. I prototyped an R/C -> Schmitt trigger inverter circuit (after worki…

Debouncing many switches used for MCU input via a shift register

PaulRB November 7, 2017, 7:02am 7

If you place diodes in series with each button, they can be read independently by the matrix.

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