If external power supply is required, just connect the + level of the external power supply to the position of 5V, GND connects to the negative terminal. (Support 3.3 ~ 6V power supply). Remember that when connecting the external power supply, you cannot access USB, USB and external power supply can only choose one.
Enter the download mode: Hold down the BOOT button of the ESP32C3, press the RESET button, release the RESET button, and then release the BOOT button. Then the ESP32C3 will enter the download mode. (Each connection needs to re-enter the download mode, sometimes press once, the port instability will be disconnected, you can judge by the port identification sound)
Features
- Single-core 32-bit RISC-V CPU up to 160 MHz with floating-point support.
- Integrated 2.4 GHz Wi-Fi (802.11b/g/n) and Bluetooth 5 (LE).
- 400KB of SRAM, 384KB ROM, and 4MB of onboard Flash memory.
- Native USB-C connector for power and programming via the onboard USB-serial interface.
- Very low deep-sleep current suitable for battery-powered designs.
- Onboard BOOT and RESET buttons for easy firmware upload and recovery.
- Built-in status LED connected to GPIO8 (active-low).
- Multiple peripheral interfaces: UART, SPI, I²C, PWM, and ADC channels.
- Compact form factor that simplifies integration into small mechanical assemblies.
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