The ESP32-C3 Supermini board has several GPIO pins that can be used for different purposes, such as digital input/output, analog input, I2C, SPI, and UART. Here is a summary of the pinout:

GPIO0: Can be used for general-purpose I/O.

GPIO1: Can be used for general-purpose I/O.

GPIO2: Can be used for general-purpose I/O.

GPIO3: Can be used for general-purpose I/O.

GPIO4: Can be used for general-purpose I/O, SCK (SPI), or SDA (I2C).

GPIO5: Can be used for general-purpose I/O, MISO (SPI), or SCL (I2C).

GPIO6: Can be used for general-purpose I/O or MOSI (SPI).

GPIO7: Can be used for general-purpose I/O or SS (SPI).

GPIO8: Can be used for general-purpose I/O or SDA (I2C).

GPIO9: Can be used for general-purpose I/O or SCL (I2C).

GPIO10: Can be used for general-purpose I/O or LED.