An easy setup for smart air purifier system. This system use Amazon IoT with MQTT protocol to get real-time data of air quality condition.
Idea is to use AWS IoT button as a switch when pressed sends notification to the homeowner that someone has tried to enter the home.
Make an Alexa clone using Raspberry Pi 3 and use it to control IOT RGB Lamp (Arduino Nano + ESP8266) that supports Philip Hue commands.
This projects shows a simple environment monitor which sends you an EMail when an abnormal weather condition is detected.
To make this alarm system all you need is an Edison, some wire and a magnetic switch per door/window.