ESP32-DevKitC V4 Getting Started Guide  This guide shows how to start using the ESP32-DevKitC V4 development board. For description of other versions of ESP32-DevKitC check ESP32 Hardware Reference. What You Need ESP32-DevKitC V4 board USB A / micro USB B cable Computer running Windows, Linux, or macOS You can skip the introduction sections and go directly to Section Start Application Development. 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 pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-DevKitC V4 on a breadboard. To cover a wide range of user requirements, the following versions of ESP32-DevKitC V4 are available: different ESP32 modules ESP32-WROOM-32 ESP32-WROOM-32D ESP32-WROOM-32U ESP32-SOLO-1 ESP32-WROVER ESP32-WROVER-B ESP32-WROVER-I ESP32-WROVER-B (IPEX) male or female pin headers. For details please refer to Espressif Product Ordering Information. Functional Description The following figure and the table below describe the key components, interfaces and controls of the ESP32-DevKitC V4 board.
Power Supply Options There are three mutually exclusive ways to provide power to the board: Micro USB port, default power supply 5V / GND header pins 3V3 / GND header pins Warning The power supply must be provided using one and only one of the options above, otherwise the board and/or the power supply source can be damaged. Note on C15 The component C15 may cause the following issues on earlier ESP32-DevKitC V4 boards: The board may boot into Download mode If you output clock on GPIO0, C15 may impact the signal In case these issues occur, please remove the component. The figure below shows C15 highlighted in yellow.