Labs

Small, reproducible experiments. Every lab pins the board revision, ordering variant, SDK and driver versions it was compiled against, publishes the full source and the real compile receipt, and states plainly whether it has been flashed to real hardware.

ESP32-S3

• Blink the ESP32-S3-DevKitC-1 RGB LED — first experiment: addressable LED wiring by board revision, Adafruit NeoPixel at a pinned version; both revisions compiled with the pinned toolchain (receipt with sizes, binary hashes and a macro negative control on the lab page), not flashed to hardware.