Capacitive sense touch Arduino library that mimics how CircuitPython touchio works.
This library emulates how the CircuitPython touchio library implements capacitive touch sensing. It also includes basic button debouncing.
It is based on the CircuitPython "touchio" code at: https://github.com/adafruit/circuitpython/blob/main/shared-module/touchio/TouchIn.c The "touchio" coode works is not platform-specific, but does require a 1M pull-down resistor.
Thus the TouchyTouch Arduino library is also not platform-specific and also requires a pull-down resistor.