t4as

Hardware & CAD · 2026

3D-Printed Enclosures & CAD

PETG and TPU enclosures designed around specific boards: the nRF52840 test board, LoRa nodes and a gateway, and a Pi Zero W pan-tilt camera mount.

  • FreeCAD
  • Fusion 360
  • PETG
  • TPU
  • FDM printing
3D-Printed Enclosures & CAD

Approach

Each enclosure is modelled around a specific board. Structural parts are PETG; gaskets, seals and bumpers are TPU. Common features across the designs are screw bosses with heat-set inserts, snap-fit battery holders, TPU gaskets between halves, and cut-outs for displays, USB and buttons.

LoRa32 compact enclosure with temperature sensor

A smaller version of the nRF52 case layout for a LoRa32 board, with an external temperature sensor.

LoRa32 compact enclosure Temperature sensor integration Complete assembly

nRF52840 test board enclosure

A two-piece enclosure for the nRF52840 multi-sensor board. Screws hold the halves together with a TPU gasket between them, and the battery holder snap-fits into the bottom half.

Front view with OLED cut-out Angled view showing case depth Side view with USB-C access Two-piece assembly Internal PCB mounting points Completed enclosure with device

nRF52840 enclosure v2

Changes from v1:

  • Housing for a tactile button
  • A TPU outer shield for drop protection
  • A larger display window

Top view showing button integration Front view with enlarged display window Side profile with TPU shield

The v2 enclosure in operation

LoRa nRF52 communication device

A portable enclosure for a LoRa nRF52 board, with an external antenna instead of the on-board one.

  • External SMA antenna connector mount
  • Large battery bay for two 18650 cells
  • Gasket groove for outdoor use, including a seal around the antenna

Internal board assembly Closed enclosure with antenna Compact side profile Antenna connector detail Open case showing the internal layout Component placement Complete assembled unit

Internal assembly and component placement

LoRa ESP32 gateway enclosure

An enclosure for a stationary ESP32 LoRa gateway:

  • Small display cut-out for status monitoring
  • Magnets in the base for wall or pole mounting
  • TPU seals against water

Gateway front with display cut-out Internal component layout CAD model: isometric view CAD model: exploded view

Raspberry Pi Zero W servo camera mount

A two-servo pan-tilt mount for a Raspberry Pi Zero W and Camera Module v2. The Pi runs the custom Yocto image.

  • Pan and tilt axes, one servo each
  • Pi Zero W housing with GPIO access
  • Camera aimed from a web interface over Wi-Fi

Assembled servo camera mount with a Raspberry Pi Zero W