Mqtt

|medium.com patrick easters mqtt article using,https://github.com/patrickeasters/nodemcu-sensor-mqtt Nodemcu Lua board for home alarm system. See https://github.com/home-assistant
github nodemcu sensor mqtt 
switch debouncer from gist.github.
intro to gpio esp8266
esp8266 swithc debounce from ESP8266
=== github ===
https://github.com/sweharris?tab=repositories links to https://rayshobby.net/wordpress/reverse-engineer-wireless-temperature-humidity-rain-sensors-part-1/. See Arduino irrigation 
https://github.com/blakeblackshear/dhcp2mqtt linked from Streaming RTSP to https://github.com/blakeblackshear/frigate object detection. 
https://www.baldengineer.com/mqtt-introduction.html message broker for IoT. 
Raspberry_pi#qt5 qt5 gui on lcd for raspberry with mosquito mqtt messaging broker for IoT by baldengineer.com 
=== links ===
CAN bus
chibios in ESC speed control
Raspberry pi
State machine
Category:Linux
Category:State machine
Category:State machines