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ESP-32 ESP32S Expansion Board The ESP32 30-pin Expansion Board is designed to expand the I/O capabilities of ESP32 modules. With 30 pins, it offers additional GPIO pins and breakout pins for various interfaces such as UART, SPI, and I2C. This board facilitates prototyping and project development with ESP32-based systems. Troubleshooting & Overheating Issues Check Power Supply: Use a stable 5V, 1A power source. Use a Heatsink: Attach a heatsink to reduce heat. Ventilation: Ensure good airflow around the module. USB Cable Quality: Use a high-quality, short USB cable to prevent power drops and communication errors. External Hardware: To prevent issues like overheating or damaging your Expension, ensure you know the correct pin mappings before connecting external hardware. Misconnecting components can lead to short circuits, excessive current draw, or even permanent damage to the microcontroller. Always reference the Expension pinout diagram for accurate pin assignments when interfacing with peripherals.