The ESP32 NodeMCU 38-Pin Development Board is an expanded system-on-chip (SoC) microcontroller module that breaks out additional underlying silicon pins compared to the standard 30-pin variant. Powered by the high-speed Tensilica Xtensa 32-bit dual-core processor, it integrates full 2.4 GHz Wi-Fi and Bluetooth capabilities. It includes an onboard USB-to-UART serial converter, allowing developers to immediately deploy advanced Internet of Things (IoT) applications requiring a higher count of GPIO lines for displays, sensors, and flash cards.Â
✨ Key Features
- Maximum Pin Outbreak: Exposes 38 physical interface layout points, making extra GPIOs, internal ADC lines, and power paths accessible on breadboards.
- Dual Wireless Ecosystem: Houses an onboard micro-strip antenna delivering stable Wi-Fi 802.11 b/g/n and dual-mode Bluetooth (Classic + BLE) network links.
- Dual-Core Processing Power: Executes complex tasks rapidly up to 240 MHz, running background network connections on one core while handling local control code on the other.Â
- Comprehensive Storage Access: Includes flash memory lines directly on the pinout array, providing flexible debugging paths for advanced firmware developers.

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