Wi-Fi senzorski čvor temeljen na STM32F4 mikrokontroleru

undergraduate thesis

• Title (english): Wi-Fi Sensor Node Based on STM32F4 Microcontroller
• Author: Ivan Juričić
• Mentor: Hrvoje Džapo (mentor)
• Committee member: Hrvoje Džapo (predsjednik povjerenstva)
• Committee member: Dinko Oletić (član povjerenstva)
• Committee member: Zrinka Topić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-07-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U okviru ovog završnog rada razvijen je sustav pametne brave kojim se upravlja udaljeno putem Android aplikacije. Za izvedbu sustava korišten je razvojni hardver za mikrokontrolere STM32F4 i NodeMCU ESP8266, SG90 servo motor, posrednički UDP server za prijenos poruka među klijentima te dvije inačice Android aplikacije. STM32F4 mikrokontroler izravno upravlja pametnom bravom kontrolirajući zakret servo motora SG90. Udaljeni pristup STM32F4 mikrokontroleru omogućen je preko interneta i Wi-Fi mreže, pri čemu povezivost omogućuje NodeMCU ESP8266 s kojim glavni mikrokontroler komunicira putem USART sučelja i AT komandi. Posrednički server razmijenjuje poruke prema UDP protokolu između NodeMCU ESP8266 i Android aplikacije, a razvijen je u programskom jeziku Python. Android aplikacija omogućuje upravljanje pametnom bravom od strane krajnjeg korisnika, kao i upravljanje ovlaštenjima korisnika i njihovim pristupom pametnoj bravi. Razvijeni sustav predstavlja tipični primjer primjene IoT paradigme, a moguće ga je uz manje preinake koristiti i za druge slične primjene kod upravljanja resursima pametne kuće.

Abstract (english)

In this work a smart lock system controlled remotely via an Android application was developed. The system was implemented by means of STM32F4 and NodeMCU ESP8266 development kits, SG90 servo motor, UDP server for message exchange between clients, and two versions of the Android application. The STM32F4 microcontroller directly controls the smart lock by controlling the angle of SG90 servo motor. Remote access to STM32F4 microcontroller is enabled via the Internet and Wi Fi network, where connectivity is provided by the NodeMCU ESP8266, which communicates with the main microcontroller by means of USART interface and AT commands. The message broker server exchanges the messages between the NodeMCU ESP8266 and the Android application using the UDP protocol, and it was developed in the Python programming language. The Android application enables the end user to manage the smart lock, as well as the management of user permissions and their access to the smart lock. The developed system is a typical example of the IoT paradigm application, and it is possible to upgrade it with slight modifications for other similar applications in smart home resource management.

• Keywords: STM32F4; NodeMCU ESP8266; IoT; FreeRTOS; SG90 servo-motor; UDP; Android
• Keywords (english): STM32F4; NodeMCU ESP8266; IoT; FreeRTOS; SG90 servo motor; UDP; Android
• Language: croatian
• URN:NBN: urn:nbn:hr:168:961502
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-14 09:01:08