ESP32-C3-DevKitC-02 Development Boards Espressif Systems ESP32-C3-DevKitC-02 Development Boards are an entry-level evaluation board based on the ESP32-C3-WROOM-02 Wi-Fi® / BLUETOOTH® LE Module. The ESP32-C3-WROOM-02 Module provides a turnkey wireless connectivity solution for the Internet of Things (IoT), wearable electronics, and smart home applications. The ESP32-C3-WROOM-02 is based on the ESP32-C3 Single-Core Wi-Fi and BLE 5.0 Microcontroller SoC (System on a Chip). This device includes an onboard PCB antenna and 4MB external SPI Flash memory.