ESP32 as a weather station

Obzirom da je vrijeme jedan od najvažnijih čimbenika našeg okoliša, ne iznenađuje činjenica da mnogi ljudi žele imati pouzdane informacije vezane za meteorološke promjene, te se iz tog razloga odlučuju na izradu osobnih vremenskih stanica. U ovom radu istražene su mogućnosti glede izrade osobne vremenske stanice koja mjeri parametre poput temperature, vlage, tlaka, brzine i smjera vjetra itd. Temeljena je na ESP32 mikrokontroleru, a osim toga su korišteni senzori BME280, BH1750, PM2.5, te gotov komplet koji se sastoji od kišomjera, anemometra i vjetrokaza. Programsko rješenje sastoji se od 4 različita projekta, a to su: Arduino, API (Application Programming Interface), web aplikacija i baza. Takva arhitektura omogućuje kontinuiranu razmjenu podataka između Arduina, API-ja i baze podataka, omogućavajući praćenje i upravljanje senzorskim podacima. Omogućeno je prikazivanje podataka na web stranici te pohrana istih. Također, izmjereni podaci prikazani su grafički. Uz izradu, naglasak je na testiranju performansi vremenske stanice, te na provjeru vjerodostojnosti rezultata.Considering the fact that the weather is one of the most significant factors which determines almost everything that we do on a daily basis, it is not surprising that people want to have a reliable source of information about the meteorological changes. This is why many people decide to design their own weather stations. This thesis discusses and researches the possible ways of designing weather stations that can measure parameters such as temperature, humidity, atmospheric pressure, wind speed and the direction of wind. This station is based on a ESP32 microcontroller and the BME280, BH1750 and PM2.5. sensors as well as rain gauge, anemometer and wind vane. The software solution consists of 4 different projects: Arduino, API (Application Programming Interface), web application and database. That architecture enables continuous data exchange between Arduino, API and database, enabling monitoring and management of sensor data. It is possible to display data on the website and store them. Also, the measured data are presented graphically. In addition to manufacturing, the emphasis is on testing the performance of the weather station, and reviewing plausibility of results. Key words: Arduino IDE, BME280, BH1750, ESP32, IoT, microcontroller, weather station