The ESP32-S3-DevKitC-1 has a lot of GPIOs, but not every pin is equally convenient to use. Some pins affect boot, some are shared with native USB or debugging, and GPIO35–37 may be unavailable depending on the flash and PSRAM configuration…

The ESP32-S2-DevKitC-1 is Espressif’s entry-level development board for the ESP32-S2 – a single-core Wi-Fi microcontroller with native USB, 43 GPIOs, ADC, DAC, touch, and a rich set of peripherals. This guide focuses on pinout and GPIO selection for the DevKitC-1,…