ToolBB-0203

Cardputer-Adv agent skill: four firmware traps from one hardware session

cardputer-adv-skill gives Claude Code or Codex the build and flash procedure for M5Stack Cardputer-Adv firmware with PlatformIO and M5Unified. Its README lists four traps: qio flash mode never boots, Serial.begin blocks without a host, opening the port resets the chip, and esptool 4.5.1 cannot sync. The author says every claim was measured on hardware.

Open original source github.com · liukjx

Claimed
Why this evidence label?

Author says every claim was measured on real hardware; no photos or logs in the repo.

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Preview image for Cardputer-Adv agent skill: four firmware traps from one hardware session
The source's own preview image, from github.com.

Briefing

Two of the traps come with fixes in the README: dio flash mode boots where qio does not, and esptool 5.x syncs where 4.5.1 fails. The skill ships flash.sh for esptool 5.x, softboot.py, and serial_capture.py, which captures output without resetting the chip. The board is built on the Stamp-S3A module with an ESP32-S3FN8.

One audio note: the default sine tone is inaudible below about 300 Hz on the 1 W speaker, and a sawtooth wave fixes it. The README says the skill was distilled from one hardware session; it does not say whether an agent hit the traps. The skill is MIT licensed.

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Repository facts

Repository facts for liukjx/cardputer-adv-skill, from the GitHub API
Repositoryliukjx/cardputer-adv-skill
Stars0
LicenseMIT Permissive
LanguagePython
Last push13 Sep 2026 46 d ago

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Interface

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