IoT(Internet of Things) has had a significant impact on the smart home. According to google trends, over 75% people searched for 'smart home' in 2016 more comparatively than in 2015. Let me introduce one which is a door lock of the smart security things.
IoT as a business mostly stems from demands in the industrial field. Typical examples are Modbus, EtherCat, and Ethernet/IP.
Most devices controlled remotely use IR communication because it is able to pass obstacles through air and transmit signals to the destination at a low cost; but the con is it is limited to short distance. Learn how to control these IR communications using Arduino Ethernet shield even from long distance.
Why do make things in the open source era? The projects introduced in this post is purely base on fun!