ESP32-PICO-KIT V3 Getting Started Guide
=======================================
:link_to_translation:`zh_CN:[中文]`

This guide shows how to get started with the ESP32-PICO-KIT V3 mini development board. For the description of other ESP32-PICO-KIT versions, please check :doc:`../../hw-reference/index`.


What You Need
-------------

* ESP32-PICO-KIT V3 mini development board
* USB 2.0 A to Micro B cable
* Computer running Windows, Linux, or macOS

You can skip the introduction sections and go directly to Section `Start Application Development`_.


Overview
--------

ESP32-PICO-KIT V3 is an ESP32-based mini development board produced by `Espressif <https://espressif.com>`_. The core of this board is ESP32-PICO-D4 - a System-in-Package (SiP) module.

The development board features a USB-UART Bridge circuit, which allows developers to connect the board to a computer's USB port for flashing and debugging.

All the IO signals and system power on ESP32-PICO-D4 are led out to two rows of 20 x 0.1" header pads on both sides of the development board for easy access.


Functional Description
----------------------

The following figure and the table below describe the key components, interfaces, and controls of the ESP32-PICO-KIT V3 board.

.. figure:: ../../../_static/esp32-pico-kit-v3-layout.jpg
    :align: center
    :alt: ESP32-PICO-KIT V3 board layout
    :figclass: align-center

    ESP32-PICO-KIT V3 board layout

Below is the description of the items identified in the figure starting from the top left corner and going clockwise.

.. list-table::
    :widths: 25 75
    :header-rows: 1

    * - Key Component
      - Description
    * - ESP32-PICO-D4
      - Standard ESP32-PICO-D4 module soldered to the ESP32-PICO-KIT V3 board. The complete ESP32 system on a chip (ESP32 SoC) has been integrated into the SiP module, requiring only an external antenna with LC matching network, decoupling capacitors, and a pull-up resistor for EN signals to function properly.
    * - LDO
      - 5V-to-3.3V Low dropout voltage regulator (LDO).
    * - USB-UART bridge
      - Single-chip USB-UART bridge provides up to 1 Mbps transfers rates.
    * - Micro USB Port
      - USB interface. Power supply for the board as well as the communication interface between a computer and the board.
    * - Power On LED
      - This red LED turns on when power is supplied to the board.
    * - I/O
      - All the pins on ESP32-PICO-D4 are broken out to pin headers. You can program ESP32 to enable multiple functions, such as PWM, ADC, DAC, I2C, I2S, SPI, etc.
    * - BOOT Button
      - Download button. Holding down **Boot** and then pressing **EN** initiates Firmware Download mode for downloading firmware through the serial port.
    * - EN Button
      - Reset button.


Start Application Development
-----------------------------

Before powering up your ESP32-PICO-KIT V3, please make sure that the board is in good condition with no obvious signs of damage.

After that, proceed to :doc:`../../get-started/index`, where Section :ref:`get-started-step-by-step` will quickly help you set up the development environment and then flash an example project onto your board.


Related Documents
-----------------

* `ESP32-PICO-KIT V3 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v3_schematic.pdf>`_ (PDF)
* `ESP32-PICO-D4 Datasheet <https://espressif.com/sites/default/files/documentation/esp32-pico-d4_datasheet_en.pdf>`_ (PDF)
* :doc:`../../hw-reference/index`
