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Added description of ESP32-PICO-KIT V4.1 board
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krzychb
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ESP32-PICO-KIT V4 Getting Started Guide
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=======================================
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ESP32-PICO-KIT V4 / V4.1 Getting Started Guide
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==============================================
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:link_to_translation:`zh_CN:[中文]`
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This user guide shows how to get started with the ESP32-PICO-KIT V4 mini development board. For description of other versions of the ESP32-PICO-KIT check :doc:`../hw-reference/index`.
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This user guide shows how to get started with the ESP32-PICO-KIT V4 / V4.1 mini development board. For description of other versions of the ESP32-PICO-KIT check :doc:`../hw-reference/index`.
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.. note::
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This particular description covers ESP32-PICO-KIT V4 and V4.1. The difference is USB-UART bridge that has been changed from CP2102 in V4 to CP2102N in V4.1. The first provides up to 1 Mbps transfer rates, while the later up to 3 Mbps transfer rates.
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What You Need
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-------------
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* 1 × :ref:`ESP32-PICO-KIT V4 mini development board <get-started-pico-kit-v4-board-front>`
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* 1 × :ref:`ESP32-PICO-KIT mini development board <get-started-pico-kit-v4-board-front>`
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* 1 × USB A / Micro USB B cable
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* 1 × PC loaded with Windows, Linux or Mac OS
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@@ -18,39 +22,39 @@ If you like to start using this board right now, go directly to section `Start A
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Overview
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--------
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ESP32-PICO-KIT V4 is a mini development board produced by `Espressif <https://espressif.com>`_. At the core of this board is the ESP32-PICO-D4, a System-in-Package (SIP) module with complete Wi-Fi and Bluetooth functionalities. Comparing to other ESP32 chips, the ESP32-PICO-D4 integrates several peripheral components in one single package, that otherwise would need to be installed separately. This includes a 40 MHz crystal oscillator, 4 MB flash, filter capacitors and RF matching links in. This greatly reduces quantity and costs of additional components, subsequent assembly and testing cost, as well as overall product complexity.
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ESP32-PICO-KIT is a mini development board produced by `Espressif <https://espressif.com>`_. At the core of this board is the ESP32-PICO-D4, a System-in-Package (SiP) module with complete Wi-Fi and Bluetooth functionalities. Comparing to other ESP32 modules, the ESP32-PICO-D4 integrates several peripheral components in one single package, that otherwise would need to be installed separately. This includes a 40 MHz crystal oscillator, a 4 MB flash, filter capacitors and RF matching links in. This greatly reduces quantity and costs of additional components, subsequent assembly and testing cost, as well as overall product complexity.
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The development board integrates a USB-UART Bridge circuit, allowing the developers to connect the board to a PC's USB port for downloads and debugging.
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For easy interfacing, all the IO signals and system power on ESP32-PICO-D4 are led out through two rows of 20 x 0.1" pitch header pads on both sides of the development board. To make the ESP32-PICO-KIT V4 fit into mini breadboards, the header pads are populated with two rows of 17 pin headers. Remaining 2 x 3 pads grouped on each side of the board besides the antenna are not populated. The remaining 2 x 3 pin headers may be soldered later by the user.
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For easy interfacing, all the IO signals and system power on ESP32-PICO-D4 are led out through two rows of 20 x 0.1" pitch header pads on both sides of the development board. To make the ESP32-PICO-KIT fit into mini breadboards, the header pads are populated with two rows of 17 pin headers. Remaining 2 x 3 pads grouped on each side of the board besides the antenna are not populated. The remaining 2 x 3 pin headers may be soldered later by the user.
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.. note::
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The 2 x 3 pads not populated with pin headers are internally connected to the flash memory embedded in the ESP32-PICO-D4 SIP module. For more details see module's datasheet in `Related Documents`_.
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The 2 x 3 pads not populated with pin headers are internally connected to the flash memory embedded in the ESP32-PICO-D4 SiP module. For more details see module's datasheet in `Related Documents`_.
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The board dimensions are 52 x 20.3 x 10 mm (2.1" x 0.8" x 0.4"), see section `Board Dimensions`_. An overview functional block diagram is shown below.
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.. figure:: ../../_static/esp32-pico-kit-v4-functional-block-diagram.png
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:align: center
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:alt: ESP32-PICO-KIT V4 functional block diagram
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:alt: ESP32-PICO-KIT functional block diagram
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:figclass: align-center
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ESP32-PICO-KIT V4 functional block diagram
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ESP32-PICO-KIT functional block diagram
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Functional Description
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----------------------
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The following list and figure below describe key components, interfaces and controls of ESP32-PICO-KIT V4 board.
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The following list and figure below describe key components, interfaces and controls of ESP32-PICO-KIT board.
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ESP32-PICO-D4
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Standard ESP32-PICO-D4 module soldered to the ESP32-PICO-KIT V4 board. The complete system of the ESP32 chip has been integrated into the SIP module, requiring only external antenna with LC matching network, decoupling capacitors and pull-up resistors for EN signals to function properly.
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Standard ESP32-PICO-D4 module soldered to the ESP32-PICO-KIT board. The complete system of the ESP32 chip has been integrated into the SiP module, requiring only external antenna with LC matching network, decoupling capacitors and pull-up resistors for EN signals to function properly.
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LDO
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5V-to-3.3V Low dropout voltage regulator (LDO).
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USB-UART Bridge
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A single chip USB-UART bridge provides up to 1 Mbps transfers rates.
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A single chip USB-UART bridge: CP2102 in V4 of the board and CP2102N in V4.1. The first provides up to 1 Mbps transfer rates, while the latter up to 3 Mbps transfers rates.
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Micro USB Port
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USB interface. It functions as the power supply for the board and the communication interface between PC and ESP32-PICO-KIT V4.
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USB interface. It functions as the power supply for the board and the communication interface between PC and ESP32-PICO-KIT.
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5V Power On LED
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This light emitting diode lits when the USB or an external 5V power supply is applied to the board. For details see schematic in `Related Documents`_.
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I/O
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@@ -62,18 +66,18 @@ EN Button
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.. _get-started-pico-kit-v4-board-front:
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.. figure:: ../../_static/esp32-pico-kit-v4-layout.jpg
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.. figure:: ../../_static/esp32-pico-kit-v4.1-layout.jpg
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:align: center
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:alt: ESP32-PICO-KIT V4 board layout
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:alt: ESP32-PICO-KIT board layout
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:figclass: align-center
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ESP32-PICO-KIT V4 board layout
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ESP32-PICO-KIT board layout
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Power Supply Options
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--------------------
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There following options are available to provide power supply to the ESP32-PICO-KIT V4:
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The following options are available to provide power supply to the ESP32-PICO-KIT:
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1. Micro USB port, this is default power supply connection
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2. 5V / GND header pins
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@@ -87,7 +91,7 @@ There following options are available to provide power supply to the ESP32-PICO-
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Start Application Development
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-----------------------------
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Before powering up the ESP32-PICO-KIT V4, please make sure that the board has been received in good condition with no obvious signs of damage.
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Before powering up the ESP32-PICO-KIT, please make sure that the board has been received in good condition with no obvious signs of damage.
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To start development of applications, proceed to section :doc:`index`, that will walk you through the following steps:
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@@ -183,25 +187,29 @@ No. Name Type Function
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Board Dimensions
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----------------
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.. figure:: ../../_static/esp32-pico-kit-v4-dimensions-back.jpg
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.. figure:: ../../_static/esp32-pico-kit-v4.1-dimensions-back.jpg
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:align: center
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:alt: ESP32-PICO-KIT V4 dimensions - back
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:alt: ESP32-PICO-KIT dimensions - back
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:figclass: align-center
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ESP32-PICO-KIT V4 dimensions - back
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ESP32-PICO-KIT dimensions - back
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.. figure:: ../../_static/esp32-pico-kit-v4-dimensions-side.jpg
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:align: center
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:alt: ESP32-PICO-KIT V4 dimensions - side
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:alt: ESP32-PICO-KIT dimensions - side
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:figclass: align-center
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ESP32-PICO-KIT V4 dimensions - side
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ESP32-PICO-KIT dimensions - side
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For the board physical construction details please refer to Reference Design listed below.
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Related Documents
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-----------------
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* `ESP32-PICO-KIT V4 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4_schematic.pdf>`_ (PDF)
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* `ESP32-PICO-KIT V4.1 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4.1_schematic.pdf>`_ (PDF)
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* `ESP32-PICO-KIT Reference Design <https://www.espressif.com/en/support/download/documents?keys=ESP32-PICO-KIT+Reference+Design>`_ containing OrCAD schematic, PCB layout, gerbers and BOM
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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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