Create a Smart Home System with a Raspberry Pi, a few sensors and Node-RED – Part 2

In the first part we learned the logic and components of the system and we configured the central component – Raspberry PI. In today’s post we’ll add some sensors and relays and we’ll integrate them with the central server via wi-fi, using the ESP8266 wireless modules. Let’s begin! Step one – Install and configure ESP8266 wireless module I’ve used so far in my projects two types of wireless modules and