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This ESP32 core development expansion board is built with the ESP32-WROOM-32 wireless module, integrating WiFi and Bluetooth functions in one board. All GPIO pins and common communication interfaces are fully expanded, convenient for peripheral connection and program debugging. With stable power supply design and multiple safety protection, it runs reliably for a long time. Widely used in IoT intelligent devices, wireless data transmission, smart home control, sensor collection and various embedded secondary development projects.