ESP32-C3 SuperMini V2 is an IoT mini development board based on the ESP32-C3 WiFi/Bluetooth dual-mode chip. It features excellent RF performance and supports IEEE 802.11 b/g WiFi and Bluetooth 5 (LE) protocols. The board includes an onboard antenna interface and RGB module, with a compact and sleek design combined with a single-sided mount layout. It supports UART, I2C, and SPI, along with other serial interfaces. A small reset button and a bootloader mode button are also integrated on the board. ESP32-C3 SuperMini is a high-performance, low-power, cost-effective IoT mini development board suitable for low-power IoT applications and wireless wearable devices. If external power supply is required, connect the external power source positive lead to the 5V pin and the negative lead to GND. The board supports 3.3-6V power input. When using an external power supply, do not connect USB power—only one power source (USB or external) should be used at a time. Note: To enter download mode: Press and hold the BOOT button, then press and release the RESET button, followed by releasing the BOOT button. The device will enter download mode. This process must be repeated each time a new connection is established. In some cases, multiple attempts may be needed if the port connection is unstable. Port detection can be confirmed through system port recognition sounds. If the ESP32-C3 SuperMini serial port fails to print output: When using direct USB connection in the development environment, ensure C on boot is enabled. When using a USB-to-serial adapter, disable C on boot. Color: Black Material: PCB Package Contents: 1 x unsoldered development board 2 x pin headers (pin header colors are random; specific colors cannot be requested) The package includes only the items listed above. Other products are not included. Note: Lighting effects and display differences may cause slight variations between the product color in images and the actual item. Measurement tolerances may vary by +/- 1-3 cm.