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📌 This is Part 2 of the series. Part 1: Theory explains why this matters. 📦 Unboxing and Preparation Heltec V4 Contents Component Purpose Board ~60×30 mm ESP32-S3R2 + SX1262, OLED 128×64, USB-C Antenna (IPEX) Connect to ANT port - mandatory! USB-C cable Power + flashing + debugging Pins (optional) For external sensors/antennas ⚠️ Important: without antenna connected, the radio module may be damaged. Always attach antenna before powering on. Heltec V4 Specifications Component Description MCU ESP32-S3R2 (WiFi + Bluetooth) LoRa Transceiver Semtech SX1262 Frequencies 863–870 MHz (EU), 902–928 MHz (US) Display 0.96" OLED 128×64 Power Up to +28±1 dBm (High Power option) Power Supply USB-C + optimized LiPo management Connectors USB-C, U.FL/IPEX for LoRa, 1.25-8Pin GNSS, 1.25-2Pin Solar Form Factor Pin-compatible with V3/V3.1 ⚡ Flashing: Web Flasher Official flasher: https://flasher.meshtastic.org ...

A submodule is a reference to another Git repository inside your project. Useful when you need to include an external library or shared code, but keep it in a separate repo. 💡 A submodule stores not the code, but a reference to a specific commit of the external repo. Add a submodule # Add a repo as a submodule to a specific path git submodule add <URL> <path/to/place> # Example git submodule add https://github.com/luizdepra/hugo-coder.git themes/hugo-coder # Commit changes git commit -m "Add submodule: themes/hugo-coder" git push After this, your project will have: ...

Git is a version control system. It tracks code changes, enables team collaboration, and lets you undo mistakes. 💡 Install once, use for years. Installation Windows Option 1: Official installer (recommended) Download from git-scm.com Run installer, keep defaults Important: On “Adjusting your PATH” step, select Git from the command line and also from 3rd-party software Option 2: Via Winget (PowerShell) winget install Git.Git Option 3: Via Chocolatey choco install git -y Linux Ubuntu / Debian sudo apt update sudo apt install git -y Fedora / RHEL ...

GPT4Free (g4f) is a free tool that gives you access to powerful AI models: GPT-4/5, Claude, Gemini, DeepSeek. It works by reverse-engineering public APIs. ⚠️ Note: For educational and testing purposes only. May violate some services’ ToS. Install in 2 minutes Requirements Any computer with internet Python 3.10+ (check “Add to PATH” during install) One command pip install -U g4f[all] Done. Library is ready. Run it Option 1: Web UI (chat in your browser) python -m g4f.cli gui --port 8080 Open in browser: http://localhost:8080/chat/ ...

OpenSSH is a tool for secure remote access via the SSH protocol. It encrypts all traffic, supports key-based authentication, and works on Windows, Linux, and macOS. 💡 After setup, you can connect to your Windows PC like a Linux server: ssh user@192.168.1.100 Requirements OS: Windows 10 (1809+), Windows 11, Windows Server 2019/2022 Privileges: Administrator Network: Access to port 22 (local or remote) Installation (3 ways) Option 1: PowerShell (recommended) # Run as Administrator # Install OpenSSH server Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0 # Verify installation Get-WindowsCapability -Online | Where-Object Name -like 'OpenSSH*' Option 2: DISM (alternative) dism /Online /Add-Capability /CapabilityName:OpenSSH.Server~~~~0.0.1.0 Option 3: Via Settings (GUI) Settings → Apps → Optional features “Add a feature” → find “OpenSSH Server” → Install Configure the service # Run as Administrator # Enable auto-start for sshd Set-Service -Name sshd -StartupType Automatic # Start the service Start-Service sshd # Check status Get-Service sshd # Verify port 22 is listening netstat -ano | findstr :22 Firewall # Check for OpenSSH rule Get-NetFirewallRule -Name *OpenSSH-Server* | Select Name, Enabled # If missing, create it New-NetFirewallRule -Name sshd ` -DisplayName 'OpenSSH Server' ` -Enabled True ` -Direction Inbound ` -Protocol TCP ` -LocalPort 22 ` -Action Allow ` -Profile Any Test connection # From the same PC ssh localhost # From another device on the network ssh <your_username>@<Windows_IP> # Example: ssh kirill@192.168.1.100 💡 First connection will ask to confirm the host key fingerprint - type yes. ...

WSL (Windows Subsystem for Linux) lets you run native Linux command-line tools directly on Windows - no VM, no dual boot. WSL1 - syscall translation layer (fast, but not 100% compatible) WSL2 - real Linux kernel in lightweight virtualization (full compatibility, slightly more resources) 💡 Use WSL2. Near-native performance with full Docker, systemd, and Linux feature support. Requirements OS: Windows 10 (2004+, build 19041+) or Windows 11 Architecture: x64 or ARM64 Privileges: Administrator (for install) Virtualization: Enabled in BIOS/UEFI (Hyper-V Platform) Check virtualization: ...