This is my first prototype Home Automation.
Step 1: ESP8266
There are two buttons - ON/OFF.
Step 2: Arduino UNO
Four relays, one door sensor, reset button are connected to the Arduino UNO. All this is in the old PC case.
Step 3: Raspberry Pi
Raspberry Pi 2B
Two modules are connected to Raspberry Pi
There is BMP180 (temperature, pressure), it's ready for DS18B20.
Step 4: MCP23008 Modul
There is MCP23008 modul.
Thera are MCP23008 and level converter and eight input/output.
Step 5: Triggers
(Arduino Mega JE ESP8266)