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Specifications:

Expansion board compatible with ESP32 38-pin development modules.
Designed for easy prototyping and connection using female header pins.
Supports both Type-C and Micro USB interfaces (depending on variant).
Compact and breadboard-friendly layout.
Operating Voltage: 3.3 V / 5 V (via onboard regulator)
Input Voltage (USB): 5 V (from USB Type-C or Micro USB)
Logic Level: 3.3 V
Current Supply: Up to 500 mA (from USB, depends on source)
38-pin female header for ESP32 main board (GPIO access).
Compatible with ESP32 DevKit V1 and similar 38-pin variants.
Breaks out all GPIO, ADC, DAC, UART, SPI, I²C, PWM pins.
USB interface: Type-C or Micro USB (for power & communication).
Reset and Boot buttons onboard for easy programming.
High-quality PCB with clear pin labeling.
Compact form factor: ~55 mm × 25 mm (approx, varies by model).
Durable female header connectors for repeated plug/unplug use.
Optional mounting holes for secure fitting on project enclosures.
Onboard voltage regulator (AMS1117-3.3 or equivalent).
Power indicator LED (shows when board is powered).
IO indicator LEDs (varies by version).
Supports breadboard or jumper wire prototyping.
Plug-and-play with Arduino IDE, ESP-IDF, MicroPython, etc.