I build practical systems that connect hardware, networks and code into one working environment.
sensor / device → MQTT → automation → service → interface → result
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ESP32 nodes running in my home: JK-BMS and 4S battery telemetry, INA219/ADS1115 energy monitoring, air-raid alert and weather displays, vibration sensors, an ESP32-CAM meter reader and Ethernet nodes, all over MQTT and Home Assistant. The screen images are rendered from the real display code, and
every configuration is checked with
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Browser-based visual editor for OLED, TFT and e-paper screens:
drag-and-drop layouts for 28 displays and boards (CYD, T-Display,
M5Stack), import of existing
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Local match analyzer with an interactive tactical map: routes, kills, knocks, zones and squad statistics from the official PUBG API. The API key stays on the local machine.
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Local-first log analyzer: drop in a log and get evidence-backed findings, a timeline and next steps from Gemini, OpenAI, Claude or Grok.
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Local archive of messages, photos, videos and voice messages sent to
your Telegram bots, with encrypted tokens and a Telegram-style web UI.
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| Area | What I build |
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| 🏠 Smart home | Home Assistant automations, openHAB rules, Node-RED flows, control panels |
| 🧩 ESPHome / ESP32 | Sensors, relays, displays, energy monitoring, BMS telemetry, custom hardware |
| 📡 MQTT | State exchange between devices, services and controllers |
| 🔐 Networking and VPN | Remote access, segmentation and secure service connections |
| 🤖 Automation | Python, PowerShell and small utilities for repetitive tasks |
| 💻 Applications | Local web apps and data analysis tools |
- Working beats impressive. A project should run and solve a real problem.
- Security by default. Secrets stay out of public code.
- Documentation next to the code. Pinouts, dependencies and limitations are written down.
- Small iterations. A working prototype first, then UX, reliability and maintainability.
- AI as a tool, not a replacement for engineering. I use it for research, drafts, debugging and documentation, then run the code, check it against real hardware and APIs and review security myself.
ESPHome configurations and wiring diagrams, Node-RED flows and MQTT patterns, maintenance scripts, and notes about VPN, networking and local services.