Wireless sensor node system based on Raspberry Pi server

U ovom se radu opisuje koncept zvan Internet of Things. IoT koncept omogućuje da se stvari kojima smo okruženi spoje na internet. Na taj način te stvari dobivaju dodatnu vrijednost i pružaju mogućnost da im se pristupi s bilo kojeg mjesta na svijetu. Sklopovlje koje se danas najčešće koristi za razvoj IoT aplikacija korišteno je u ovom radu s ciljem izrade prototipa takve aplikacije koja se sastoji od bežičnog senzorskog čvora i poslužitelja. Senzorski čvor služi za mjerenje temperature i slanje izmjerene vrijednosti, dok poslužitelj bežičnim putem prima tu vrijednost i dalje ju obrađuje. Opisan je način povezivanja i konfiguriranja korištenih sklopova te su dani korišteni programski kôdovi. Nakon izrade opisanog sklopa, izvršena je analiza potrošnje senzorskog čvora.The subject of this paper is the description of the Internet of Things concept The concept in question enables things around us to get connected to the internet. In this way, things have an added value and can be accessed from every place in the world. The devices commonly used today for the development of the IoT applications are used in this project to develop a prototype. The developed IoT application prototype consists of a wireless sensor node and a server. On the sensor node, the outdoor temperature is measured and wirelessly transmitted to the server which receives the data and processes it. In this work it is described how to connect and configure these devices and, to that end, programming codes are given. After the device is built, the power consumption of the sensor node is measured and the results are analysed