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ESP32-PICO-KIT V3 Getting Started Guide
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=======================================
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:link_to_translation:`zh_CN:[中文]`
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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`.
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What You Need
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-------------
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* ESP32-PICO-KIT V3 mini development board
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* USB 2.0 A to Micro B cable
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* Computer running Windows, Linux, or macOS
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You can skip the introduction sections and go directly to Section `Start Application Development`_.
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Overview
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--------
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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.
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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.
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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.
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Functional Description
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----------------------
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The following figure and the table below describe the key components, interfaces, and controls of the ESP32-PICO-KIT V3 board.
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.. figure:: ../../_static/esp32-pico-kit-v3-layout.jpg
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:align: center
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:alt: ESP32-PICO-KIT V3 board layout
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:figclass: align-center
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ESP32-PICO-KIT V3 board layout
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Below is the description of the items identified in the figure starting from the top left corner and going clockwise.
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================== =================================================================================================================================
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Key Component Description
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================== =================================================================================================================================
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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.
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LDO 5V-to-3.3V Low dropout voltage regulator (LDO).
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USB-UART bridge Single-chip USB-UART bridge provides up to 1 Mbps transfers rates.
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Micro USB Port USB interface. Power supply for the board as well as the communication interface between a computer and the board.
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Power On LED This red LED turns on when power is supplied to the board.
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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.
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BOOT Button Download button. Holding down **Boot** and then pressing **EN** initiates Firmware Download mode for downloading firmware through the serial port.
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EN Button Reset button.
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================== =================================================================================================================================
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Start Application Development
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-----------------------------
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Before powering up your ESP32-PICO-KIT V3, please make sure that the board is in good condition with no obvious signs of damage.
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After that, proceed to :doc:`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.
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Related Documents
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-----------------
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* `ESP32-PICO-KIT V3 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v3_schematic.pdf>`_ (PDF)
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* `ESP32-PICO-D4 Datasheet <http://espressif.com/sites/default/files/documentation/esp32-pico-d4_datasheet_en.pdf>`_ (PDF)
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* :doc:`../hw-reference/index`
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