button_membrane_actuated_case2.png

Modeled membrane deformation at one representative press condition. This is a pre-fabrication simulation using CAD geometry and assumed material and switch inputs; it is not a physical force or lifetime measurement.

Portable Network Graphics (PNG) - 447.02 kB - 09/22/2026 at 23:18

Preview

button_membrane_unpressed.png

Modeled membrane rest state used by the pre-fabrication deformation study. CAD geometry and assumed material and switch inputs only; no fabricated PCB or physical measurement.

Portable Network Graphics (PNG) - 420.10 kB - 09/22/2026 at 23:18

Preview

button_membrane_grid_search.png

Parameter sweep for the pre-fabrication membrane model across modeled press angles, directions, and offsets. It maps model sensitivity and does not validate the current physical assembly.

Portable Network Graphics (PNG) - 416.38 kB - 09/22/2026 at 23:18

Preview

button_membrane_actuated_case1.png

Modeled membrane deformation at a representative press condition. CAD geometry and assumed material and switch inputs only; it is not a physical force or lifetime measurement.

Portable Network Graphics (PNG) - 440.94 kB - 09/22/2026 at 23:18

Preview

button_membrane_actuated_case3.png

Modeled membrane deformation at a representative press condition. CAD geometry and assumed material and switch inputs only; it is not a physical force or lifetime measurement.

Portable Network Graphics (PNG) - 454.81 kB - 09/22/2026 at 23:18

Preview

button_travel_curve.png

Calculated travel and tactile-switch threshold for a parameterized membrane study. This is a model output, not a force, fatigue, or lifetime measurement on a physical StackCalc assembly.

Portable Network Graphics (PNG) - 120.26 kB - 09/22/2026 at 23:18

Preview

stackcalc-npdf-walkthrough-ipad.mp4

Thirty-second iPad App Store walkthrough of the shipping StackCalc app. This demonstrates the companion software, not the unpowered mechanical prototype.

MPEG-4 Video - 10.84 MB - 09/22/2026 at 23:17

Download

stackcalc-npdf-walkthrough-iphone.mp4

Thirty-second iPhone App Store walkthrough of the shipping StackCalc app. This demonstrates the companion software, not the unpowered mechanical prototype.

MPEG-4 Video - 11.10 MB - 09/22/2026 at 23:17

Download

tpu_membrane_award.3mf

PrusaSlicer reference project for the current TPU membrane. Embedded overrides: 0.10 mm layers, TPU at 235°C / 50°C bed, 140 mm/s walls and infill, and 50–60% cooling after layer 4.

3mf - 402.67 kB - 09/22/2026 at 23:00

Download

unified_faceplate_award_pla.3mf

PrusaSlicer reference project for the current unified faceplate: 0.15 mm layers, PLA Silk profile, automatic build-plate-only snug supports, and 15% grid infill.

3mf - 133.13 kB - 09/22/2026 at 23:00

Download

chassis_award_petg.3mf

PrusaSlicer reference project for the current chassis. Historical filename retained; embedded profile is Generic PLA, 0.20 mm layers, 15% gyroid, 5 mm brim, and manual snug supports.

3mf - 45.92 kB - 09/22/2026 at 23:00

Download

top_cap_award_petg.3mf

PrusaSlicer reference project for the current top cap. Historical filename retained; embedded profile is Generic PLA, 0.20 mm layers, 15% gyroid, and manual snug supports.

3mf - 42.38 kB - 09/22/2026 at 23:00

Download

tpu-membrane-simulation-frame.png

Frame from the software deformation model for the proposed TPU keypad membrane. The switch and board shapes are model inputs, not a fabricated StackCalc PCB or physical test measurement.

Portable Network Graphics (PNG) - 551.20 kB - 09/22/2026 at 22:19

Preview

button_membrane_deformation.mp4

Three-second software deformation visualization for the proposed TPU keypad membrane. It uses model geometry and assumed inputs; it is not physical PCB, switch-force, or lifetime test evidence.

MPEG-4 Video - 1.39 MB - 09/22/2026 at 22:19

Download

tpu_membrane_award.stl

Current TPU keypad membrane for the active mechanical kit. Exploratory print-in-place spring variants are not this file.

Standard Tesselated Geometry - 10.44 MB - 09/22/2026 at 22:11

Download

unified_faceplate_award.stl

Current one-piece faceplate for the active mechanical kit. Pairs with chassis_award and tpu_membrane_award.

Standard Tesselated Geometry - 1.95 MB - 09/22/2026 at 22:11

Download

chassis_award.stl

Current chassis for the active mechanical kit. Pairs with the faceplate, TPU membrane, and cap. Mechanical prototype only; no PCB.

Standard Tesselated Geometry - 273.02 kB - 09/22/2026 at 22:11

Download

top_cap_award.stl

Current printed snap-retained top cap for the active mechanical kit. Tool-free closure design; physical validation is ongoing.

Standard Tesselated Geometry - 246.45 kB - 09/22/2026 at 22:11

Download