Features: 1. This development board is equipped with a 0.42-inch OLED display screen, ceramic antenna, Type-C USB interface, reset button, and start button, making it easy and fast to operate. 2. Rich peripheral interfaces with abundant peripherals and functions, suitable for small projects and scenarios such as IoT, wearable devices, and smart homes. 3. Low power design, optimized power management system supports multiple low-power modes, suitable for battery powered devices, and extends battery life. 4. Supports 2.4GHz Wi Fi and Bluetooth low-power 5.0, suitable for wireless connection needs of various IoT devices. 5. High cost-effectiveness, compared to the performance and functionality it provides, ESP32-C3 has significant cost-effectiveness and is suitable for large-scale deployment of IoT projects. Product Description: The ESP32-C3 development board is a microcontroller that supports 2.4 GHz Wi Fi and Bluetooth low energy consumption. Based on the RISC-V architecture, it is suitable for development environments such as Ard and Micropython. It has rich peripherals and functions, suitable for small projects and scenarios such as IoT, wearable devices, and smart homes. At the same time, the onboard 0.42-inch OLED display screen, ceramic antenna, Type-C USB interface, reset button, and start button make operation convenient and fast. Parameter: Voltage: 3.3~6V WiFi: 802.11b/g/n protocol, 2.4GHz Bluetooth: BT 5.0 SPI Flash: Built in 4M Pin interfaces: 1xI2C, 1xSPI, 2xUART, 11xGPIO (PWM), 4xADC Onboard LED blue light: GPO8 pin BO0: Download button, long press BO0 button and plug in the USB cable, then release your hand to enter "download mode" RST: Reset button, program running restarts or resets. USB interface: can be used as a power supply for circuit boards or as a communication interface for connecting PCs and ESP32C3. Size: 24.8mm * 20.45mm be careful: 2. If external power supply is required, simply connect the external power supply+stage to the 5V position and GND to the negative terminal. (Supports 3.3-6V power supply). 3. Remember that when connecting to an external power source, USB cannot be connected, and only one of USB and external power can be selected. 4. Please be careful not to short-circuit the positive and negative electrodes during welding, which may burn out the battery and equipment. Package include: 1X development board 2X needle arrangement