PCB Bring-Up & Debug — question 2 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
This is about establishing a defensible bring-up order on a board you've never powered before, not about the specific firmware.
You're building the bring-up checklist for a new prototype board that has a power stage, an MCU with an external crystal, and a UART bootloader. A teammate suggests skipping straight to flashing firmware over UART right after connecting power, reasoning that 'if it boots and talks over UART, everything downstream must be fine.' What's wrong with that plan, and what order would you actually use and why?