Automation describes a wide range of technologies that reduce human intervention in various processes. Same applies in home automation, where the goal is to reduce human intervention in performing simple tasks, such as, turning lights on and off. In this undergraduate thesis, a smartphone application was made to control outdoor lighting. An overview of available solutions on the market and their comparison is presented. Some of the most popular solutions are platforms called ecosystems, such as HomeKit and Amazon Alexa and others like them. These platforms are ready to use right away, but the user is limited on using functions within that platform. To avoid this, Home Assistant was selected as an open-source platform that is customized for use on a smartphone. The installation and configuration of the platform is shown, as well as the hardware required for functioning of the entire system. Installation and configuration process is done on a computer, connected on a local network. After that, platform can be used on any device which is connected to a local network, if the administrator allows it. Home Assistant provides an easy way of adding devices to the system and provides numerous system expansion options with various integrations and addons. The biggest advantage of this platform is the ability to manage it outside the local network, which allows additional control and security over the entire home.