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OpenWRT-Based Travel Router for Raspberry Pi CM4

Travel Router

Introduction

This project presents a custom OpenWRT-based travel router built on the Raspberry Pi Compute Module 4 (CM4) platform, utilizing the Waveshare CM4-DUAL-ETH-MINI board. It is designed to provide reliable and secure internet connectivity for professionals and enthusiasts who require consistent network access while traveling.

Usage

Warning

The firmware is customized for specific hardware configuration. If you have a different configuration, you may need to build the firmware yourself.

Hardware Specifications

Raspberry Pi Compute Module 4

  • Processor: Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
  • Memory: 2GB, 4GB, or 8GB LPDDR4-3200 SDRAM (depending on model)
  • Storage: 8GB, 16GB, or 32GB eMMC Flash (depending on model)
  • Wireless: 2.4GHz and 5.0GHz IEEE 802.11b/g/n/ac wireless, Bluetooth 5.0, BLE
  • Video & Audio: 2 × 4K HDMI, 2 × MIPI DSI display, 2 × MIPI CSI-2 camera

Waveshare CM4-DUAL-ETH-MINI Board

  • Dual Gigabit Ethernet ports
  • 1x USB 3.0 Type-A port
  • 1x Micro-SD card slot
  • 1x USB 2.0 pin header
  • 1x 12V DC power input
  • Supports CM4 and CM4Lite modules
  • Compact size: 85mm x 56mm

Key Features

Advanced Networking Capabilities

  1. Multi-WAN Support: Facilitates seamless switching between various internet sources.
  2. VPN Integration: Includes support for OpenVPN and WireGuard, ensuring secure and private connections.
  3. Tethering Compatibility: Supports multiple tethering options for use with mobile devices.
  4. Extensive WiFi Adapter Support: Accommodates a wide range of WiFi adapters for optimal connectivity.

User-Centric Software Features

  1. Intuitive Web Interface: Offers a modern, user-friendly interface for effortless network management.
  2. Smart Network Management:
  • Bandwidth monitoring
  • WiFi scheduling
  • System temperature monitoring
  1. File Sharing Capabilities: Incorporates Samba for convenient file sharing within the network.

Security and Performance Optimization

  1. Firewall Configuration: Ensures network security through robust firewall settings.
  2. Quality of Service (QoS): Implements Smart Queue Management for optimized network performance.
  3. DNS over HTTPS: Provides enhanced privacy for DNS queries.

Ideal Use Cases

This travel router is particularly well-suited for:

  • Business professionals requiring reliable internet access during travel
  • Remote workers needing secure connections in various locations
  • Individuals seeking to enhance their home network with advanced features
  • Travelers desiring consistent internet access in diverse environments

Software Package Highlights

  • Base System: OpenWRT with LuCI web interface
  • Network Management: Multi-WAN support, QoS, firewall configuration
  • VPN: OpenVPN, WireGuard
  • DNS: HTTPS DNS proxy
  • Modem Support: QMI and MBIM protocols for cellular modems
  • WiFi: Support for various USB WiFi adapters
  • Monitoring: Bandwidth, system statistics, and thermal monitoring
  • File Sharing: Samba module

License

This project is licensed under the MIT License. See the LICENSE file for more information.