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Master's Thesis
Author of thesis: Bc. Ondřej Janíček
Acad. year: 2025/2026
Supervisor: doc. Ing. Zdeněk Bradáč, Ph.D.
Reviewer: Ing. Matěj Turinský
This master's thesis focuses on the architectural design of a modular LED display board utilizing WS2812B addressable RGB LEDs. The primary objective is to develop a system capable of smoothly displaying complex visual content, including real-time animations and video, while offering remote control and configuration via a wireless Wi-Fi interface. The thesis encompasses both software and hardware architecture designs. The software architecture comprises a Qt-based application used for system configuration and managing display data transmission. An ESP32-S3 microcontroller serves as the main control unit, communicating with the Qt application via UDP over Wi-Fi. This UDP communication is split into two main categories: the transmission of control commands via ASCII instructions, and the transmission of LED packets carrying the visual data. To drive the display, the ESP32-S3 utilizes 14 independent channels and the FastLED library. The hardware configuration consists of 16x16 pixel WS2812B LED matrices. The final display board is composed of 28 of these panels arranged in a 7:4 layout, resulting in a total resolution of 112x64 pixels. The LED matrices are mounted onto an aluminum plate using thermally conductive tape, which simultaneously serves as a passive heat sink. The system is powered by a power supply with nominal ratings of 5 V and 300 A. The modular panels are connected in vertical pairs, enabling a refresh rate of 65 fps. The functionality of the entire proposed system was successfully verified on a fully operational prototype.
LED display, WS2812B, ESP32, WiFi, real-time transmission, video streaming, embedded systems, power systems, network communication, UDP.
Date of defence
09.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
B
Process of defence
Student obhájil diplomovou práci. Komise neměla žádné námitky k řešené práci. V průběhu odborné rozpravy student odpověděl na dotazy týkající se komunikačního rozhraní, funkce aplikace a hardwarová konfigurace LED panelů.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Control and Instrumentation
Study programme
Cybernetics, Control and Measurements (MPC-KAM)
Composition of Committee
doc. Ing. Radovan Hájovský, Ph.D. (předseda) doc. Ing. Zdeněk Bradáč, Ph.D. (místopředseda) Ing. Peter Honec, Ph.D. (člen) Ing. Ilona Janáková, Ph.D. (člen) Ing. Stanislav Klusáček, Ph.D. (člen) Ing. Miloslav Richter, Ph.D. (člen)
Supervisor’s reportdoc. Ing. Zdeněk Bradáč, Ph.D.
Grade proposed by supervisor: C
Reviewer’s reportIng. Matěj Turinský
Grade proposed by reviewer: B
Responsibility: Mgr. et Mgr. Hana Odstrčilová