A 3D-printable enclosure for the Waveshare ESP32-P4-WiFi6-Touch-LCD-4.3 development board (480x800 LCD). Designed with the Kern air-gapped Bitcoin signer project in mind, but suitable for any use case with this board.

Files

File	Description
KernWaveshare4.3.FCStd	Main FreeCAD source file
KernWaveshare4.3AlanKeyVariant.FCStd	Variant with hex socket head screw mounting
KernWaveshare4.3.3mf	Ready-to-slice 3D model
Button.FCStd	Separate button component

Printing

Material: PLA
Layer height: 0.16 mm
Infill: 15% cross hatch
Orientation: Print as designed (flat on build plate)

The .3mf file contains the following plates for Bambu Studio:

Plate	Contents
Cylinder Screw Head Version	Enclosure body with cylindrical screw head mounting + button
Tapered Screw Head Version	Enclosure body with tapered screw head mounting + button
Buttons	Extra button bodies
MultiColor	Multicolour enclosure (body + cover + buttons, uses 3 filament colors)

Assembly

Battery taped to inside of enclosure (Battery not compulsory for this project - it can be run off USB Power)
Mount the board using M2.5 screws (6 mm - 8 mm length recommended)
The enclosure has an outer protective rim that frames the 4.3" screen
A 1000mAh battery (model 503450, available on AliExpress) fits snug inside. Note: the units received were mislabeled as "100mAh" in the photos, but they are actually 1000mAh. The battery uses an MX1.25 connector, which matches the development board's battery connector. No rewiring needed.

Kern Project

This enclosure was designed for the Kern project, which uses the ESP32-P4 as an air-gapped Bitcoin signer. Kern supports the 4.3" Waveshare board as the wave_43 target. You can find build and flashing instructions in the Kern README.

License

This work is licensed under CC BY-SA 4.0. If you remix, transform, or build upon this design, you must distribute your contributions under the same license.