┌─────────────────────────┐
│ Cosimo Leoni            │
│ IT Tech                 │
│                         │
│                         │
└─────────────────────────┘

CORE COMPETENCIES:

• 🏢 Enterprise IT Infrastructure
• 🌐 Network Management & Security
• 🔧 System Administration
• 🤖 IoT & Embedded Systems

┌─────────────────────────┐
│ LEARNING STACK          │
├─────────────────────────┤
│ → Python Programming    │
│ → Fusion 360 Advanced   │
│ → Cloud Infrastructure  │
│ → Network Security      │
└─────────────────────────┘

ACTIVE DOMAINS:

• 🎨 3D Design & Prototyping
• 💻 Development & Automation
• 🔐 Security & Compliance
• 📡 Network Architecture

┌──────────────────────────────────┐
│  STATUS: Active          ⭐ 9    │
│  TYPE:   Open Source             │
│  LANG:   HTML / JS / Shell       │
└──────────────────────────────────┘

The tiniest self-hosted PaaS for Raspberry Pi. Deploy, manage, edit and backup web apps from your browser. Two editions on separate branches: Standalone (main, no Docker) and Docker (containerized apps with auto-Dockerfile generation). Built-in CodeMirror editor, scheduled backups, SQLite/PostgreSQL support, multi-distro installer.

STACK: Node.js HTML Shell Docker

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Maintained      ⭐ 1    │
│  TYPE:   Klipper Config          │
│  LANG:   Firmware / Klipper      │
└──────────────────────────────────┘

Modern Klipper configuration for Ender 3 NG CoreXY with Orbiter 2.0 direct drive. 40+ macros, intelligent LCD menu (ST7920), material profiles (PLA/PETG/ABS/ASA/TPU), PA calibration generator, smart START_PRINT/END_PRINT, automated filament change.

STACK: Klipper Orbiter 2.0 BLTouch TMC2209

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Active   v2.1           │
│  TYPE:   Embedded / IoT          │
│  LANG:   C++                     │
└──────────────────────────────────┘

ESP8266-based service monitoring system for homelab. Monitors up to 50 HTTP/HTTPS services with OLED display, web dashboard and smart Telegram notifications with rate limiting, RAM-aware queue, and anti-restart protection.

STACK: C++ Arduino ESP8266 Telegram Bot

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Active                  │
│  TYPE:   Embedded / 3D Print     │
│  LANG:   C++                     │
└──────────────────────────────────┘

Single-file MJPEG streaming firmware for AI Thinker ESP32-CAM optimized for Mainsail/Fluidd. Dedicated FreeRTOS stream task, WiFi watchdog with auto-restart, HTTP-controlled flash LED with Klipper macro integration.

STACK: C++ ESP32 Klipper MJPEG

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Active                  │
│  TYPE:   Wearable / IoT          │
│  LANG:   C++                     │
└──────────────────────────────────┘

Wearable cosplay RPG badge built on ESP-01S + 0.96" OLED. Generates a personalized character card with deterministic stats from your name, fetches live Italian cosplay conventions from cosplayersitaliani.it, NTP clock, captive portal WiFi setup, persistent EEPROM config.

STACK: C++ ESP-01S SSD1306 NTP

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Active          ⭐ 1    │
│  TYPE:   Open Source             │
│  LANG:   CAD / Manufacturing     │
└──────────────────────────────────┘

70% 3D-printable precision press for heat-set threaded inserts. V-slot linear motion, weight-assisted gravity-powered insertion, ~$30 build cost. Compatible with M2-M5 inserts, includes BOM and full assembly guide.

STACK: Fusion 360 STL V-slot Mechanical Design

📂 VIEW REPOSITORY →

┌──────────────────────────────────┐
│  STATUS: Active                  │
│  TYPE:   Web App / Retrogaming   │
│  LANG:   HTML / JavaScript       │
└──────────────────────────────────┘

Single-page web tools for the Game Boy Printer Emulator ecosystem — zero install, runs entirely in the browser via the Web Serial API. Receive Game Boy Camera photos from an Arduino over USB, decode 2bpp tile data into native PNG (single or batch ZIP export), and flash the GBP Emulator firmware onto Arduino Nano/Uno using STK500v1 — no avrdude, no Arduino IDE. DMG-themed green UI, GPL-3.0 licensed, hosted on GitHub Pages: hexlions.github.io/GBP-Downloader →

STACK: HTML JavaScript Web Serial API STK500v1 Arduino

📂 VIEW REPOSITORY →