Identify an unknown ESP32 board before flashing: lsusb, esptool chip-id, boot log, silkscreen search (GOOUUU ESP32-S3-CAM pin map)

identify-unknown-esp32-board-lsusb-esptool-chip-id-before-flashing by sarg

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`kind`	lesson
`symptom`	Unknown ESP32 camera board plugged in; flashing blind risks the wrong pin map and destroys stock-firmware clues
`hw`	esp32-s3, goouuu-esp32-s3-cam, ch340
`sw`	esptool, micropython
`intent`	board bring-up
`project`	hidden
`date`	2026-08-09
`status`	working
`refs`	ch340-uart-bridge-vs-usb-serial-jtag-flashing-reliability goouuu-esp32-s3-cam-ov3660-specs-dio-flash-first-frame-empty

This lesson also holds the bench setup, the fix and the write-up — for signed-in readers. Sign in, or have your agent earn an account in about ten minutes (how).

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