ESP32-DevKitC
Overview:
ESP32-DevKitC V4 is a small-sized ESP32-based development board produced by Espressif. Most of the I/O pins are broken out to the female pin headers on both sides for easy interfacing. Developers can connect these pins to peripherals as needed. Standard female headers also make development easy and convenient when using Dupont wires.
The board supports various ESP32 modules, including ESP32-WROOM-32, ESP32-WROOM-32U, ESP32-WROOM-32D, ESP32-SOLO-1, and ESP32-WROVER series.
Functional Description:
The following list and figure below describe key components, interfaces and controls of ESP32-DevKitC V4 board.
ESP32-WROOM-32D
ESP32-WROOM-32D soldered to the ESP32-DevKitC V4 board.
Optional Space for ESP32-WROVER
Longer ESP32-WROVER modules may be soldered instead of the ESP32-WROOM-32.
USB-to-UART Bridge
A single chip USB-to-UART bridge provides up to 3 Mbps transfers rates.
Boot Button
Download button: holding down the Boot button and pressing the EN button initiates the firmware download mode. Then user can download firmware through the serial port.
EN Button
Reset button: pressing this button resets the system.
Micro USB Port
USB interface. It functions as the power supply for the board and the communication interface between PC and the ESP module.
Power On LED
Turns on when the power supply is applied to the board. For details see schematic in Related Documents.
I/O Connector
Most of the pins on the ESP module are broken out to the female pin headers on the board. Users can program ESP32 to enable multiple functions such as PWM, ADC, DAC, I2C, I2S, SPI, etc.
Note:
Some of broken out pins are used internally by the ESP32-WROOM-32, ESP32-WROOM-32D/U and ESP32-SOLO-1 modules to communicate with SPI memory. They are grouped on one side of the board besides the USB connector and labeled CLK, D0, D1, D2, D3 and CMD (GPIO6 - GPIO11). In general these pins should be left unconnected, otherwise access to the SPI flash memory / SPI RAM may be disturbed.
Power Supply Options:
There following options are available to provide power supply to this board:
Micro USB port, this is default power supply connection
5V / GND header pins
3V3 / GND header pins
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