Modular Meshtastic Terminal Enclosure

Modular Meshtastic Terminal Enclosure (Based on Ebyte EoRa-S3)

This is an open-source, modular LoRa terminal enclosure designed for Meshtastic.
The project is based on the Ebyte EoRa-S3 LoRa development board. By redesigning the internal frame and enclosure structure, it provides high reliability while offering strong DIY flexibility and extensibility.

This is not a closed, all-in-one finished product, but a structural foundation that can be modified, replaced, and evolved over time.

Project Features

• Designed specifically for the EoRa-S3 development board
• Fully decoupled internal frame and outer enclosure
• Replaceable front panel and battery compartment, ideal for deep DIY customization
• Material-specific tolerance adjustments for different 3D printing materials
• Uses standard metric fasteners for easy global replication

Structural Design

1️⃣ Internal Frame (Structural Core)

• Designed to support and secure the EoRa-S3 development board
• Dimension and assembly tolerances optimized for ASA-CF
• ASA-CF Vicat softening temperature: approximately 108 °C
  • Even during long-term operation and heat generation, the frame will not soften or deform
• The internal frame is responsible for:
  • Mainboard fixation
  • Connector alignment
  • Primary structural load-bearing

Printing the internal frame with ASA-CF is recommended for optimal strength and thermal stability.

2️⃣ Enclosure (Front Panel + Battery Compartment)

The enclosure uses a two-part design:

• Front Panel
  • Can be redesigned freely
  • Screen layout, button placement, and appearance are fully customizable
• Battery Compartment
  • Can be replaced with your own battery size or power solution

The enclosure models are tolerance-adjusted specifically for PLA.
With common PLA printing settings, the parts assemble smoothly without destructive modifications.

Recommended material: PLA

Battery Support

The current enclosure design supports:

• 104060 lithium battery
  • Dimensions: 10 mm × 40 mm × 60 mm
  • Capacity: approximately 3000 mAh

The battery compartment is structurally independent, making it easy to adapt for other battery sizes or custom designs.

Antenna Design

• Rubber duck antenna
• Foldable structure
  • Extended length: approximately 110 mm
  • Folded length: approximately 90 mm
• Balances portability with practical use

Fasteners and Assembly

This design uses standard metric hardware:

• Screws:
  • 4 × M3 × 30 DIN 912 (hex socket head cap screws)
• Nuts:
  • M3 DIN 934 hex nuts

This combination is well-suited for 3D-printed structures and supports repeated disassembly, battery replacement, and enclosure modification.

Printing Tolerance Notes

• Internal frame:
  • Tolerances optimized for ASA-CF material properties (shrinkage, rigidity)
• Enclosure:
  • Assembly tolerances optimized for PLA material characteristics

If other materials (such as PETG or ABS) are used, testing or minor adjustments are recommended.

Open Source and Usage

You can:

• Print the complete set to quickly build a functional Meshtastic terminal
• Use only the internal frame and design your own enclosure
• Modify the front panel and battery compartment to create your own device form factor

This project is released as open source.
You are welcome to modify, redesign, and share it freely.