ESP32S minimal example
Tutorial: https://esp32s.com/wiki/grove-line-finder-v1-1-esp32/
Arduino-ESP32 core: 3.3.0
FQBN: esp32:esp32:esp32c3:CDCOnBoot=cdc
External libraries: none
Read the tutorial wiring and model checks before use. Compilation check only; no physical bench test.
