Solution Overview

The micro circuits you designed and built in the previous learning path were standalone circuits exchanging data and communicating only amongst themselves. In this learning path you will add another layer of services that will convert your standalone Physical Computing solution to a remotely connected Internet of Things solution.

With this, you will build a Smart Home solution, with sensors, relays, and actuators. Sensors placed at various locations in the house will capture data such as temperature and detect a gas leak and send the data to an IoT app on your smart phone, either via MQTT over the Internet or directly using Bluetooth Low Energy.

Sensors will also detect state changes in the home and take some action. For example, they will detect motion and turn on (and off) a light using a relay or measure plant soil moisture levels and start (and stop) the flow of water using an actuator valve. Alternately you can turn a light on or off or start or stop the flow of water from your smartphone by sending a signal from your smart phone via MQTT or over BLE.