This project implements a capacitive touch switch.
It is inspired by the Arduino library CapacitiveSensor from
Paul Bagder and Paul Stoffregen and the application report 
SLAA363A, section 3.2 from TI.

It is implemented for the ESP8266. See schematics and photo
for the setup with an NodeMCU board in the Docs folder.

It has been developed and is built using the Sloeber IDE.
