Back Lid for Heltec v4 Expansion Kit
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Back Lid for Heltec v4 Expansion Kit
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Back lid for Heltec v4 Expansion Kit
Due to the fact that the Heltec v4 Expansion Kit comes with an embarrassing back lid, I created the present model.
Recommended settings for the lid:
Sparse infill density: 45%
Sparse infill pattern: Gyroid
Support
Important !!! - This will create a protective net over the sensor grid and should not be removed. The appearance is pleasant and quite durable.
Type: Normal
Style: Snug
Support/object XY distance: 0
Support/object first layer gap: 0
For the 4 holes where the lid is fixed Add Support Blocker / Cylinder.
For the hanging clamp, 2 x M2.5x3x3.5 insert nuts are used.
They are inserted from the side that comes inward with the thin tip first.
See the picture with them inserted.
If the screws extend beyond the nut, use the included spacer, resize its thickness in the slicer according to the size of the screw that extends beyond the nut. The attached spacer has a thickness of 0.65 mm.
Attached, also find a mini screwdriver for the screws that secure the expansion card to the case.
v1.01 - 2026.05.15
- fix for the back lid without access to the GPIO connector, the inner cutout was not fitting perfectly,
- the depth of the 4 fixing screws was adjusted, the screws were tightened but the lid was not fixed tightly,
- added a new back lid with access to the GPIO connector.
Designed in FreeCAD.