Introduction The ESP32C3SuperMini is a mini IoT development board based on the Espressif ESP32-C3 WiFi/Bluetooth dual-mode chip. The ESP32-C3 is a 32-bit RISC-V CPU with an FPU Floating-Point Unit capable of 32-bit single-precision arithmetic, providing powerful computing capabilities. It boasts excellent RF performance, supporting IEEE 802.11 b/g/n WiFi and Bluetooth 5 LE protocols. The board includes an external antenna to enhance signal strength compatible with wireless applications. It features a compact form factor and a single-sided surface mount design. It is equipped with a rich array of interfaces, including 11 digital I/O pins that can be used as PWM pins and 4 analog I/O pins that can be used as ADC pins. It supports four serial interfaces: UART, I2C, and SPI. The board also features a small reset button and a bootloader mode button. In summary, the ESP32C3SuperMini is positioned as a high-performance, low-power, and cost-effective mini IoT development board, suitable compatible with low-power IoT applications and wireless wearable applications. Product Specifications Powerful CPU: ESP32-C3, 32-bit RISC-V single-core processor, operating at up to 160 MHz WiFi: 802.11b/g/n protocol, 2.4GHz, supports Station mode, SoftAP mode, SoftAP/Station mode, and promiscuous mode Bluetooth: Bluetooth 5.0 Ultra-low power consumption: Approximately 43μA in deep sleep mode Abundant board resources: 400KB SRAM, 384KB ROM, and built-in 4M flash memory. Chip Model: ESP32C3FN4 Ultra-small size: as small as a thumb 22.52x18mm Classic form factor, suitable compatible with wearable devices and small projects Reliable security features: Encryption hardware accelerator supporting AES-128/256, hash, RSA, HMAC, digital signatures, and secure boot Rich interfaces: 1xI2C, 1xSPI, 2xUART, 11xGPIO PWM , 4xADC Single-sided component, surface mount design Onboard blue LED: 8-pin GPIO External Power Supply: If external power is required, simply connect the positive terminal of the external power supply to a 5V terminal and the GND terminal to the negative terminal. Supports 3.3V/6V power supply . Remember, when connecting an external power supply, do not connect the USB port; only one of USB or external power supply can be selected. Entering Download Mode: Press and hold the BOOT button on the ESP32C3, then press the RESET button, release the RESET button, and then release the BOOT button. The ESP32C3 will then enter download mode. You need to re-enter download mode every time you connect. Sometimes, pressing the button once may cause the connection to drop due to port instability; you can check the port/x27;s beep code to determine this.