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Achievement: StarstruckAchievement: QuickdrawAchievement: Pair ExtraordinaireAchievement: Pull SharkAchievement: YOLO

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petrochen/README.md

Alex Petrochenko

Embedded & IoT · Reverse Engineering · Practical Tools · Browser Games

I build practical tools for hardware, infrastructure, and the web — with a focus on reverse engineering and making devices useful for longer.

Based in Lisbon, Portugal.

Hardware & reverse engineering

  • ESP8266 Weather Clock — open-source firmware for DIY weather clocks, reverse-engineered from a consumer kit.
  • iCharger Python — USB control and measurement automation for Junsi iCharger battery chargers.
  • ISDT Firmware Flasher — tools for flashing ISDT charger firmware without Windows.

Software & infrastructure

  • Audio Input Priority — control which microphone macOS uses when audio devices connect.
  • Guit95 — a modern revival of a classic guitar learning application.
  • Xray Double Hop — configuration and tooling for a two-hop Xray connection.

Vibe-coded arcade

A series of retro browser games built with AI-assisted coding. Play directly in your browser, on desktop or mobile.

Game Play Source
Tetris Play Tetris Code
Pac-Man Play Pac-Man Code
Space Invaders Play Space Invaders Code
Arkanoid Play Arkanoid Code

Each game runs from a single HTML file, with no dependencies or build step. The collection also has an arcade leaderboard API built on Cloudflare Workers and D1.

More game projects: TrimAscension, a Minecraft armor-trim mod; Azul Score, a board-game scoring companion; and Pirate Paper Randomizer, a coordinate caller for a paper treasure-hunt game.

Tools I work with

Python · C/C++ · JavaScript · Shell · ESP8266/ESP32 · PlatformIO · Ghidra · Wireshark

Contact

Website · Telegram · Email

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  1. esp8266-weather-clock-opensource esp8266-weather-clock-opensource Public

    Open-source firmware for TJ-56-654 ESP8266 weather clock (ESP-01S + OLED). Fixes WiFi password leak in original firmware. NTP time, Open-Meteo weather, OTA updates, web UI.

    C++ 16 12

  2. icharger-python icharger-python Public

    Python library for controlling Junsi iCharger battery chargers via USB HID Modbus. Features: battery fingerprinting, auto IR measurement, preset management, real-time monitoring.

    Python 6

  3. xray-double-hop xray-double-hop Public

    Double-hop VPN for bypassing Russian TSPU: RU bridge → Foreign egress via VLESS+XHTTP+Reality

    6 1

  4. guit95 guit95 Public

    Modern web reissue of the 1995 Ubi Soft Guit95 guitar-learning CD — engine only (no CD content)

    TypeScript 1

  5. audio-input-priority audio-input-priority Public

    macOS agent that keeps the default microphone on the best available device (fixes Bluetooth headsets stuck in HFP)

    Swift

  6. isdt-firmware-flasher isdt-firmware-flasher Public

    Cross-platform Python tool to update firmware on ISDT chargers (SC-608, SC-620) using SCLinker cable. No Windows required!

    Python