Example of a button push - originally for usage of a door bell notifier, but can be used for other thing. This code uses the Arduino IDE (1.6.7 at time of this writting), with the NodeMCU boards ...

The NodeMCU development board is a powerful solution to program microcontrollers and be part of the Internet of Things (IoT). The NodeMCU development board, based on ESP8266EX, is a cute module with a ...