The ESP32-C3 Mini is a compact development board based on the ESP32-C3 chip, which features a single-core RISC-V processor. This board is ideal for IoT applications due to its small size and versatile GPIO pins.

Pinout Overview

The ESP32-C3 Mini has several GPIO pins that can be used for various functions such as digital I/O, analog input, PWM, I2C, SPI, and UART. Here is a brief overview of the pinout:

• GPIO0 to GPIO21: These pins can be used for general-purpose digital I/O.

• GPIO4 and GPIO5: These pins are used for I2C communication (SDA and SCL respectively).

• GPIO6 to GPIO11: These pins are used for SPI communication (SCK, MISO, MOSI, and SS).

• GPIO20 and GPIO21: These pins are used for UART communication (TX and RX).

Example Usage

Here is an example of how to use the GPIO pins for different peripherals:

I2C Communication

To use the I2C communication, you can connect your I2C device to GPIO4 (SDA) and GPIO5 (SCL). Here is a sample code to initialize the I2C communication: