Published onFebruary 3, 2026Test Your ESP32-S3 First, or Waste Three Days Like I Didesp32-s3-testing-guideesp32-gpio-testesp32-validation-checklistesp32hardwaretestingvalidationgpioelectronics-debuggingesp32-s3-devkitESP32-S3 validation checklist before building your project. Test GPIO pins, avoid strapping pin mistakes, catch dead boards before wiring. Save hours debugging.