# University Projects — Roman Nečas

Coursework from the **Bachelor of Information Technology** programme at the **Faculty of Information Technology, Brno University of Technology (FIT VUT)**, 2023–2026.

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.

## Repository layout

```
projects/
├── 1BIT/   # Year 1 (2023/2024)
│   ├── winter-semester/
│   └── summer-semester/
├── 2BIT/   # Year 2 (2024/2025)
│   ├── winter-semester/
│   └── summer-semester/
└── 3BIT/   # Year 3 (2025/2026)
    ├── winter-semester/
    └── summer-semester/
```

## Highlights

If you only have time to look at a few projects, start with these:

- **ISA — ICMP Covert Channel** *(C, OpenSSL)* — encrypted file transfer tunneled through ICMP Echo packets.
- **IJA — Advance Wars clone** *(Java 21, JavaFX, 93 JUnit tests)* — turn-based strategy game with two AI opponents and a replay system. Team lead.
- **IIS — Winery Management System** *(Laravel 12, Tailwind 4, Docker)* — full-stack web app with 20+ migrations and role-based access control.
- **IMP — ESP32 Heart-Rate Monitor** *(C, ESP-IDF, FreeRTOS)* — photoplethysmography with a Kalman filter, sampled at 500 Hz.
- **IPK — L4 Port Scanner** *(C, raw sockets)* — TCP/UDP scanner for IPv4 and IPv6, benchmarked against Nmap.
- **INP — 8-bit CPU in VHDL** — synthesisable CPU that executes a BrainFuck-like instruction set.

## Year 3 (2025 / 2026)

### Winter semester

**ISA — Network Applications and Management**
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.

**IIS — Information Systems**
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.

**IMP — Microprocessor and Embedded Systems**
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.

**IMS — Modelling and Simulation**
Ski resort discrete-event simulation in C++/SIMLIB. Analyses lift capacity, queue lengths, and throughput under varying skier arrival rates. Team of 2.

**IZV — Data Acquisition, Processing and Visualization**
Three Python assignments covering web scraping, statistical analysis of a real-world dataset, and visualization.

### Summer semester

**IJA — Java Programming Language**
*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.

**ITS — Software Testing and dynamic analysis**
Test design exercises: BDD/Gherkin scenarios, test case documentation, and coverage reports.

## Year 2 (2024 / 2025)

### Winter semester

**INP — Computer System Design**
- *Project 1:* 8-bit CPU in VHDL that interprets a BrainFuck-like instruction set (synthesisable, simulated in ModelSim).
- *Project 2:* Vigenère cipher implemented in MIPS64 assembly.

**ISS — Signals and Systems**
Digital signal processing assignment in Python (Jupyter notebook): spectral analysis, filtering, and frequency-domain manipulation of audio signals.

**ITU — User Interface Design**
UI/UX project — mockup, clickable prototype, and a final documentation PDF.

**IAL — Algorithms**
Classic data structures in C across two homework sets: linked lists, stacks, queues, binary trees (both recursive and iterative traversal), and hash tables.

### Summer semester

**IPK — Computer Communication and Networks**
- *Project 1 (OMEGA):* L4 port scanner in C supporting TCP and UDP scanning over IPv4 and IPv6; evaluated against Nmap.
- *Project 2 (IPK25-CHAT):* Chat client implementing the IPK25-CHAT application protocol with both TCP and UDP transport variants, authentication, and channel semantics.

**IPP — Principles of object-oriented programming**
Two-part compiler project for the SOL25 language.
- *Part 1:* Python 3.11 parser using the Lark library; produces an XML AST after lexical, syntactic, and static semantic analysis.
- *Part 2:* PHP 8 interpreter for SOL25, built object-oriented with clean Model / Expression / Statement / Values namespaces.

**IDS — Database Systems**
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.

**IBS — Information System Security**
Security assignments covering authentication, access control, and common vulnerability classes.

**IZU — Fundamentals of Artificial Intelligence**
Four assignments on classical AI: uninformed and informed search, heuristics, and game-tree algorithms.

**ITY — Typography and Publishing**
Five LaTeX typesetting assignments of progressively increasing complexity — from basic documents to mathematical papers and bibliographies.

## Year 1 (2023 / 2024)

### Winter semester

**Keyfilter** — C project implementing interactive prefix-based filtering over a keyword list.

**Maze** — C project implementing right-hand / left-hand rule maze solving on a triangular-cell maze.

**IEL — Electronics for Information Technology**
DC / AC circuit analysis project with Dia schematics and a written report.

### Summer semester

**IJC — Programming in C**
- *Project 1:* Sieve of Eratosthenes built on a custom bitset data structure, plus a `no-comment` preprocessor that strips C-style comments.
- *Project 2:* Generic hash-table library with string interning, used to implement `tail` and `wordcount` clones.

**IOS — Operating Systems**
- *Project 1:* Bash shell scripting for log processing and filesystem traversal.
- *Project 2:* Process synchronization in C using POSIX shared memory and semaphores.

**INC — Digital Design**
Digital logic assignment (schematic / VHDL level).

**IZLO — Fundamentals of Logic**
Two assignments combining propositional / predicate logic theory with a small C implementation.

## Course code reference

| Code | Course (English) |
| --- | --- |
| IJC | Programming in C |
| IOS | Operating Systems |
| INC | Digital Design |
| IZLO | Fundamentals of Logic |
| IEL | Electronics for IT |
| IAL | Algorithms |
| INP | Computer System Design |
| ISS | Signals and Systems |
| ITU | User Interface Design |
| IBS | Information System Security |
| IDS | Database Systems |
| IPK | Computer Communication and Networks |
| IPP | Principles of object-oriented programming |
| ITY | Typography and Publishing |
| IZU | Fundamentals of Artificial Intelligence |
| ISA | Network Applications and Management |
| IMS | Modelling and Simulation |
| IMP | Microprocessor and Embedded Systems |
| IIS | Information Systems |
| IZV | Data Acquisition, Processing and Visualization |
| IJA | Java Programming Language |
| ITS | Software Testing and dynamic analysis|

## Notes

- 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.
- Team projects list co-authors inside the relevant project directory (e.g., `IDS/xnecasr00_xpribik00/`).
- Binary build artefacts and third-party dependencies are generally excluded; follow each project's build instructions to rebuild from source.

## Contact

Roman Nečas — [LinkedIn](https://linkedin.com/in/roman-necas)     [roman@necas.me](roman@necas.me)