Blog

Your Own Outdoor Meshtastic Node, a Guide

7/9/2025 2 min read

Meshtastic and Meshcore are fascinating open-source projects that have seen tremendous growth in recent years. Especially in outdoor scenarios, they open up exciting possibilities: Whether hiking, festivals, or networking remote areas — a robust network of nodes can ensure communication anywhere.

But the biggest challenge?
The hardware must withstand wind, weather, and UV radiation over the long term.

After years of experimenting with self-built outdoor nodes, I’m sharing my insights here.
Spoiler: Waterproof junction boxes saved my nodes — and I now only use 3D printing for clever additions. In the sidebar, you’ll find example products I’ve personally tested.

3D Printing: Creative, but with Pitfalls

My first outdoor nodes were built using 3D printed enclosures. I gave everything to make them weatherproof:

  • Thick walls (up to 4 mm) to repel moisture
  • Dense printing through slight overflow for seamless layers
  • No infill to avoid water accumulating in cavities
  • Sealing of seams and cable entries with silicone or glue

At first, everything worked perfectly – the nodes functioned flawlessly.
However, after 6 to 12 months, most were broken.

The PCBs looked intact, but I suspect slow moisture ingress (e.g., condensation) gradually destroyed the electronics. UV exposure and temperature fluctuations didn’t help.

Conclusion:
3D printing is ideal for prototypes, but for long-term outdoor use of Meshtastic or Meshcore nodes, it simply isn’t robust enough.

Junction Boxes: The Unbeatable Solution

After some setbacks, the question arose:
Why reinvent the wheel?

In electrical engineering, proven solutions have existed for decades – waterproof junction boxes. For Meshcore nodes, they’re a real gamechanger.

Why junction boxes convince:

  • IP65/IP67 rating – dustproof and waterproof even during heavy rain
  • Ready cable entries – rubber grommets or screw caps reliably keep moisture out
  • Easy maintenance – open lid, swap node or flash firmware
  • High durability – UV-resistant materials, no brittleness like many filaments

With some sealant on cable entries, these boxes become virtually indestructible.
The electronics remain dry, safe, and always accessible.

Hybrid Approach: Junction Box Meets 3D Printing

I don’t completely give up on 3D printing — but I use it more strategically:

  • Mounts
  • Antenna holders
  • Mounting systems for pole, wall, or tree

The sensitive electronics are protected inside the junction box, while outside I can get creative.

The best of both worlds:

  • Reliable protection thanks to the junction box
  • Customization via 3D printed accessories

Conclusion

For durable outdoor Meshcore nodes, there’s no getting around a quality junction box.
3D printing is great for prototypes or short-term projects — but in continuous operation, the robust, industry-proven solutions prevail.

Since switching to junction boxes, my nodes run without failures — rain, snow, or sun don’t matter.

My tip:
Don’t skimp on the box. Invest in a solid IP67 junction box and use 3D printing purposefully for mounts or accessories.

That’s how you build Meshcore nodes that not only last a season but reliably work for years.