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# University Projects — Roman Nečas
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Coursework from the **Bachelor of Information Technology** programme at the **Faculty of Information Technology, Brno University of Technology (FIT VUT)**, 2023–2026.
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This repository is a portfolio snapshot — for each course, the version of the project that was submitted and graded. Some projects are team efforts (co-authors credited in the relevant directory); the rest are solo work.
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## Repository layout
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```
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projects/
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├── 1BIT/ # Year 1 (2023/2024)
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│ ├── winter-semester/
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│ └── summer-semester/
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├── 2BIT/ # Year 2 (2024/2025)
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│ ├── winter-semester/
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│ └── summer-semester/
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└── 3BIT/ # Year 3 (2025/2026)
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├── winter-semester/
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└── summer-semester/
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```
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## Highlights
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If you only have time to look at a few projects, start with these:
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- **ISA — ICMP Covert Channel** *(C, OpenSSL)* — encrypted file transfer tunneled through ICMP Echo packets.
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- **IJA — Advance Wars clone** *(Java 21, JavaFX, 93 JUnit tests)* — turn-based strategy game with two AI opponents and a replay system. Team lead.
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- **IIS — Winery Management System** *(Laravel 12, Tailwind 4, Docker)* — full-stack web app with 20+ migrations and role-based access control.
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- **IMP — ESP32 Heart-Rate Monitor** *(C, ESP-IDF, FreeRTOS)* — photoplethysmography with a Kalman filter, sampled at 500 Hz.
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- **IPK — L4 Port Scanner** *(C, raw sockets)* — TCP/UDP scanner for IPv4 and IPv6, benchmarked against Nmap.
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- **INP — 8-bit CPU in VHDL** — synthesisable CPU that executes a BrainFuck-like instruction set.
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## Year 3 (2025 / 2026)
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### Winter semester
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**ISA — Network Applications and Management**
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File transfer through an ICMP covert channel. A C client/server that hides arbitrary files inside ICMP/ICMPv6 Echo-Request/Reply payloads, encrypts them with AES before transmission, and reassembles them on the listening side. Includes a custom on-top-of-ICMP framing protocol, a manpage, and a PDF design document.
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**IIS — Information Systems**
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Winery management web application. Grape varieties, vineyard rows, harvests, wine production, purchases, events, and customer reservations. Laravel 12, Tailwind CSS 4, Vite; role-based access control via Laravel Policies; Dockerised for dev and prod.
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**IMP — Microprocessor and Embedded Systems**
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ESP32 heart-rate monitor using an optical PulseSensor and an I²C OLED display. 500 Hz ADC sampling on a hardware timer, Kalman-filtered signal, threshold-crossing beat detection. Written in C on ESP-IDF v5.5.1 with FreeRTOS.
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**IMS — Modelling and Simulation**
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Ski resort discrete-event simulation in C++/SIMLIB. Analyses lift capacity, queue lengths, and throughput under varying skier arrival rates. Team of 2.
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**IZV — Data Acquisition, Processing and Visualization**
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Three Python assignments covering web scraping, statistical analysis of a real-world dataset, and visualization.
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### Summer semester
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**IJA — Java Programming Language**
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*Advance Wars* clone in Java 21 / JavaFX. Grid-based tactical combat with terrain costs, multiple unit types, economy, two AI opponents (random and heuristic), and a step-through replay. Architecture uses MVC (engine cleanly separated from GUI), Command pattern with full undo/redo, Factory, and Observer. Dijkstra pathfinding. 93 JUnit 5 tests across 15 test classes.
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**ITS — Software Testing and dynamic analysis**
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Test design exercises: BDD/Gherkin scenarios, test case documentation, and coverage reports.
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## Year 2 (2024 / 2025)
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### Winter semester
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**INP — Computer System Design**
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- *Project 1:* 8-bit CPU in VHDL that interprets a BrainFuck-like instruction set (synthesisable, simulated in ModelSim).
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- *Project 2:* Vigenère cipher implemented in MIPS64 assembly.
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**ISS — Signals and Systems**
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Digital signal processing assignment in Python (Jupyter notebook): spectral analysis, filtering, and frequency-domain manipulation of audio signals.
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**ITU — User Interface Design**
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UI/UX project — mockup, clickable prototype, and a final documentation PDF.
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**IAL — Algorithms**
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Classic data structures in C across two homework sets: linked lists, stacks, queues, binary trees (both recursive and iterative traversal), and hash tables.
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### Summer semester
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**IPK — Computer Communication and Networks**
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- *Project 1 (OMEGA):* L4 port scanner in C supporting TCP and UDP scanning over IPv4 and IPv6; evaluated against Nmap.
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- *Project 2 (IPK25-CHAT):* Chat client implementing the IPK25-CHAT application protocol with both TCP and UDP transport variants, authentication, and channel semantics.
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**IPP — Principles of object-oriented programming**
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Two-part compiler project for the SOL25 language.
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- *Part 1:* Python 3.11 parser using the Lark library; produces an XML AST after lexical, syntactic, and static semantic analysis.
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- *Part 2:* PHP 8 interpreter for SOL25, built object-oriented with clean Model / Expression / Statement / Values namespaces.
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**IDS — Database Systems**
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Library management database in Oracle SQL. Four-part team project (ER model → relational schema → DML and queries → triggers, procedures, materialized view, analytical queries). Team of 2.
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**IBS — Information System Security**
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Security assignments covering authentication, access control, and common vulnerability classes.
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**IZU — Fundamentals of Artificial Intelligence**
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Four assignments on classical AI: uninformed and informed search, heuristics, and game-tree algorithms.
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**ITY — Typography and Publishing**
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Five LaTeX typesetting assignments of progressively increasing complexity — from basic documents to mathematical papers and bibliographies.
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## Year 1 (2023 / 2024)
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### Winter semester
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**Keyfilter** — C project implementing interactive prefix-based filtering over a keyword list.
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**Maze** — C project implementing right-hand / left-hand rule maze solving on a triangular-cell maze.
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**IEL — Electronics for Information Technology**
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DC / AC circuit analysis project with Dia schematics and a written report.
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### Summer semester
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**IJC — Programming in C**
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- *Project 1:* Sieve of Eratosthenes built on a custom bitset data structure, plus a `no-comment` preprocessor that strips C-style comments.
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- *Project 2:* Generic hash-table library with string interning, used to implement `tail` and `wordcount` clones.
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**IOS — Operating Systems**
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- *Project 1:* Bash shell scripting for log processing and filesystem traversal.
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- *Project 2:* Process synchronization in C using POSIX shared memory and semaphores.
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**INC — Digital Design**
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Digital logic assignment (schematic / VHDL level).
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**IZLO — Fundamentals of Logic**
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Two assignments combining propositional / predicate logic theory with a small C implementation.
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## Course code reference
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| Code | Course (English) |
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| --- | --- |
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| IJC | Programming in C |
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| IOS | Operating Systems |
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| INC | Digital Design |
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| IZLO | Fundamentals of Logic |
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| IEL | Electronics for IT |
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| IAL | Algorithms |
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| INP | Computer System Design |
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| ISS | Signals and Systems |
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| ITU | User Interface Design |
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| IBS | Information System Security |
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| IDS | Database Systems |
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| IPK | Computer Communication and Networks |
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| IPP | Principles of object-oriented programming |
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| ITY | Typography and Publishing |
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| IZU | Fundamentals of Artificial Intelligence |
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| ISA | Network Applications and Management |
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| IMS | Modelling and Simulation |
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| IMP | Microprocessor and Embedded Systems |
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| IIS | Information Systems |
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| IZV | Data Acquisition, Processing and Visualization |
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| IJA | Java Programming Language |
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| ITS | Software Testing and dynamic analysis|
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## Notes
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- All projects were developed for FIT VUT courses and graded by the respective instructors. They are published here as a portfolio snapshot; the faculty's academic integrity rules apply to anyone considering reuse.
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- Team projects list co-authors inside the relevant project directory (e.g., `IDS/xnecasr00_xpribik00/`).
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- Binary build artefacts and third-party dependencies are generally excluded; follow each project's build instructions to rebuild from source.
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## Contact
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Roman Nečas — [LinkedIn](https://linkedin.com/in/roman-necas) [roman@necas.me](roman@necas.me)
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