Library provides a single node for calculating the simple moving average (https://en.wikipedia.org/wiki/Moving_average#Simple_moving_average). Based on https://github.com/ThingEngineer/movingAvgFloat which in turn is derived from https://github.com/JChristensen/movingAvg
This patch allows to readout a 4x4 numpad connected with all 8 wires to the arduino. Use 10 k Resistors on the 4 read-pins on ground to get some pulldown. Testing required.
Allows the use of multiple buttons on a single analog input.
Each button to be wired in series with differing levels of resistors to create voltage outputs of differing values.