[MMM-MPR121] A module heavily based on MMM-Buttons to use a MPR121 touch-button controller instead of physical buttons

[PatriceG]

Description:

This a module to use the MPR121 touch (capacitive) button controller instead of physical buttons.
It is capable of connecting up to 12 buttons, which can be individually configured. This module heavily based on the awesome [MMM-Buttons module] (https://github.com/Jopyth/MMM-Buttons)

This module sends out notifications to other modules.

Download:

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Version 1.0.0

• First release. Tested OK with a Sparkfun MPR121 breakout board.