ESP32-S3 and ESP32-C3

ESP32-S3 (Xtensa LX7, dual-core)

Board	Highlights
ESP32-S3 DevKit	The reference S3 board — AI acceleration, plenty of RAM
XIAO ESP32-S3	Seeed’s thumb-sized S3, 11 pins
Arduino Nano ESP32	S3 in the classic Nano footprint, RGB LED

ESP32-C3 (RISC-V, single-core)

Board	Highlights
ESP32-C3 DevKit	The reference C3 — small, cheap, WiFi+BLE
XIAO ESP32-C3	Seeed’s tiny C3
ESP32-C3 SuperMini	The popular postage-stamp C3 board

Languages for both families: Arduino C++, MicroPython, ESP-IDF.

Same platform, different silicon

Everything from the classic ESP32 page applies — WiFi on Velxio-GUEST, the peripheral set, web flash — but the firmware is built for and executed on the right core: Xtensa LX7 for the S3, RISC-V for the C3. Instruction-level differences are faithfully emulated, which is why an S3 binary and a C3 binary of the same sketch behave exactly like their hardware counterparts.

Looking for the ESP32-C6, the XIAO ESP32S3 Sense (camera + mic + microSD) or the XIAO ESP32C6? Those are Pro boards.

Board art and pinouts

Each board’s canvas art and full pin map, generated from the simulator:

ESP32-S3 DevKit · XIAO ESP32-S3 · Arduino Nano ESP32 · ESP32-C3 DevKit · XIAO ESP32-C3 · ESP32-C3 SuperMini