ESP32-S3: Wi-Fi and Bluetooth LE for IoT projects

Editorial archive date shown below; this guide was prepared and updated on 11 October 2026.

Espressif's ESP32-S3 family combines 2.4 GHz Wi-Fi and Bluetooth Low Energy with a microcontroller platform for connected projects. Development boards based on this family are used to connect sensors, displays and local controls.

The full model matters

ESP32-S3 describes a family, not one identical board. Confirm the development-board model, flash and PSRAM configuration, antenna arrangement and available pins. Do not assume two boards share the same pinout because their product titles look similar.

Before connecting hardware

• Read the board's power and logic-level requirements.
• Check the pinout and any pins reserved for onboard functions.
• Confirm the required USB connection and software environment.
• Prepare the sensor and display interface requirements.

Start by testing each peripheral separately. Then combine networking and application logic so faults are easier to identify.

Explore development boards or request a specific board model.

Reference: Espressif ESP32-S3 overview.