In this final paper, we will take a closer look at the origins of IoT, its application and importance in this day of age, as well as the possibilities when it comes to programming an IoT application. We will focus on visual programming as a concept and method for IoT programming and development, see how it originated in consideration to programming technology and how it became a more and more recognized method and solution for programming purposes. We will get acquainted with the most famous visual programming tools, paying special attention to the Node-RED tool as one of the currently most popular tools of this kind. For the demonstration, we will create one simple application that will interact with the Arduino platform to read and display the results on created dashboard in the Node-RED. Finally, we will put everything in perspective and look at the direction in which the IoT industry is being created and what benefit sit brings to users and smart devices that are surrounding us at every corner.