==========================
ESP32-S2-Kaluga-1 Kit v1.3
==========================

:link_to_translation:`zh_CN:[中文]`

Older version: :doc:`user-guide-esp32-s2-kaluga-1-kit-v1.2`

The ESP32-S2-Kaluga-1 kit v1.3 is a development kit by Espressif that is mainly created to:

- Demonstrate the ESP32-S2's human-computer interaction functionalities
- Provide the users with the tools for development of human-computer interaction applications based on the ESP32-S2

There are many ways of how the ESP32-S2's abundant functionalities can be used. For starters, the possible use cases may include:

- **Smart home**: From simplest smart lighting, smart door locks, smart sockets, to video streaming devices, security cameras, OTT devices, and home appliances
- **Battery-powered equipment**: Wi-Fi mesh sensor networks, Wi-Fi-networked toys, wearable devices, health management equipment
- **Industrial automation equipment**: Wireless control and robot technology, intelligent lighting, HVAC control equipment, etc.
- **Retail and catering industry**: POS machines and service robots

.. Image of v1.2 is used as there are no visual changes

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32-s2-kaluga-1-kit-v1.0-3d.png
    :align: center
    :width: 3452px
    :height: 1590px
    :scale: 20%
    :alt: ESP32-S2-Kaluga-1-Kit-Assembly
    :figclass: align-center

    ESP32-S2-Kaluga-1-Kit Overview (click to enlarge)


The ESP32-S2-Kaluga-1 kit consists of the following boards:

- Main board: *ESP32-S2-Kaluga-1*
- Extension boards:

  - :doc:`user-guide-esp-lyrat-8311a_v1.3` - audio player
  - :doc:`user-guide-esp-lyrap-toucha-v1.1` - touch panel
  - :doc:`user-guide-esp-lyrap-lcd32-v1.2` - 3.2" LCD screen
  - :doc:`user-guide-esp-lyrap-cam-v1.1` - camera board

Due to the presence of multiplexed pins on ESP32-S2, certain extension board combinations have limited compatibility. For more details, please see :ref:`user-guide-esp32-s2-kaluga-1-kit-ext-board-compatibility`.

This document is **mostly dedicated to the main board** and its interaction with the extension boards. For more detailed information on each extension board, click their respective links.

This guide covers:

- `Getting Started`_: Provides an overview of the ESP32-S2-Kaluga-1 and hardware/software setup instructions to get started.
- `Hardware reference`_: Provides more detailed information about the ESP32-S2-Kaluga-1's hardware.
- `Hardware Revision Details`_: Covers revision history, known issues, and links to user guides for previous versions of the ESP32-S2-Kaluga-1.
- `Related Documents`_: Gives links to related documentation.


Getting Started
===============


This section describes how to get started with the ESP32-S2-Kaluga-1. It begins with a few introductory sections about the ESP32-S2-Kaluga-1, then Section `Start Application Development`_ provides instructions on how to do the initial hardware setup and then how to flash firmware onto the ESP32-S2-Kaluga-1.


Overview
--------

The ESP32-S2-Kaluga-1 main board is the heart of the kit. It integrates the ESP32-S2-WROVER module and all the connectors for extension boards. This board is the key tool in prototyping human-computer interaction interfaces.

The ESP32-S2-Kaluga-1 board has connectors for boards with:

- Extension header (ESP-LyraT-8311A, ESP-LyraP-LCD32)
- Camera header (ESP-LyraP-CAM)
- Touch FPC coneector (ESP-LyraP-TouchA)
- LCD FPC connector (no official extension boards yet)
- I2C FPC connector (no official extension boards yet)

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32s2-kaluga-1-v1.3-3d.png
    :align: center
    :width: 3089px
    :height: 2335px
    :scale: 25%
    :alt: ESP32-S2-Kaluga-1
    :figclass: align-center

    ESP32-S2-Kaluga-1 (click to enlarge)

All the four extension boards are specially desgined to support the following features:

* Touch panel control
    * Six touch buttons
    * Supports acrylic panels up to 5 mm
    * Wet hand operation
    * Water rejection, ESP32-S2 can be configured to disable all touchpads automatically if multiple pads are simultaneously covered with water and to re-enable touchpads if the water is removed

* Audio playback
    * Connect speakers to play audio
    * Use together with the Touch panel to control audio playback and adjust volume

* LCD display
    * LCD interface (8-bit parallel RGB, 8080, and 6800 interface)

* Camera image acquisition
    * Supports OV2640 and OV3660 camera modules
    * 8-bit DVP image sensor interface (ESP32-S2 also supports 16-bit DVP image sensors, you can design it yourself)
    * Clock frequency up to 40 MHz
    * Optimized DMA transmission bandwidth for easier transmission of high-resolution images


Description of Components
-------------------------

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32-s2-kaluga-1-v1.3-layout-front.png
    :align: center
    :width: 934px
    :height: 645px
    :scale: 70%
    :alt: ESP32-S2-Kaluga-1 - front
    :figclass: align-center

    ESP32-S2-Kaluga-1 - front (click to enlarge)

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32-s2-kaluga-1-v1.3-layout-back.png
    :align: center
    :width: 934px
    :height: 600px
    :scale: 70%
    :alt: ESP32-S2-Kaluga-1 - back
    :figclass: align-center

    ESP32-S2-Kaluga-1 - back (click to enlarge)


The description of components starts from the ESP32-S2 module on the left side and then goes clockwise.

**Reserved** means that the functionality is available, but the current version of the kit does not use it.


.. list-table::
   :widths: 30 70
   :header-rows: 1

   * - Key Component
     - Description
   * - ESP32-S2-WROVER Module
     - Module integrating the ESP32-S2 chip that provides Wi-Fi connectivity, data processing power, and flexible data storage.
   * - 4.3" LCD FPC Connector
     - (Reserved) Connect to a 4.3" LCD extension board using the FPC cable.
   * - ESP Prog Connector
     - (Reserved) Connection for Espressif's download device (ESP-Prog) to flash ESP32-S2 system.
   * - JTAG Switch
     - Switch to ON to enable connection between ESP32-S2 and FT2232; JTAG debugging will then be possible using USB-UART/JTAG Port. See also :doc:`../../api-guides/jtag-debugging/index`.
   * - Breakout Header 2
     - Some GPIO pins of the ESP32-S2-WROVER module are broken out to this header, see labels on the board.
   * - USB-to-UART/JTAG Bridge
     - FT2232 adapter board allowing for communication over USB port using UART/JTAG protocols.
   * - Camera Header
     - Mount a camera extension board here (e.g., ESP-LyraP-CAM).
   * - Extension Header
     - Mount the extension boards having such connectors here.
   * - Reset Button
     - Press this button to restart the system
   * - Boot Button
     - Holding down **Boot** and then pressing **Reset** initiates Firmware Download mode for downloading firmware through the serial port.
   * - USB-UART/JTAG Port
     - Communication interface (UART or JTAG) between a PC and the ESP32-S2 module.
   * - USB Power Port
     - Power supply for the board.
   * - Battery Port
     - Connect an external battery to the 2-pin battery connector.
   * - Power On LED
     - Turns on when the USB or an external power supply is connected to the board.
   * - Power Switch
     - Switch to ON to power the system.
   * - RGB Jumper
     - To have access to the RGB LED, place a jumper onto the pins.
   * - RGB LED
     - Programmable RGB LED and controlled by GPIO45. Before using it, you need to put RGB Jumper ON.
   * - Power Regulator
     - Regulator converts 5 V to 3.3 V.
   * - I2C FPC Connector
     - (Reserved) Connect to other I2C extension boards using the FPC cable.
   * - Breakout Header 1
     - Some GPIO pins of the ESP32-S2-WROVER module are broken out to this header, see labels on the board.
   * - Touch FPC Connector
     - Connect the ESP-LyraP-TouchA extension board using the FPC cable.
   * - Touch Switch
     - In OFF position, GPIO1 to GPIO14 are used for connection to touch sensors; switch to ON if you want to use them for other purposes.
   * - 3.2" LCD FPC connector
     - Connect a 3.2" LCD extension board (e.g., ESP-LyraP-LCD32) using the FPC cable.


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

Before powering up your ESP32-S2-Kaluga-1, please make sure that it is in good condition with no obvious signs of damage.


Required Hardware
^^^^^^^^^^^^^^^^^

- ESP32-S2-Kaluga-1
- Two USB 2.0 cables (Standard-A to Micro-B)

  - For power supply
  - For UART/JTAG communication

- Computer running Windows, Linux, or macOS
- Any extension boards of your choice


Hardware Setup
^^^^^^^^^^^^^^

1. Connect the extension board(s) of your choice (go to their respective user guides if necessary)
2. Plug in both USB cables
3. Turn the **Power Switch** to ON - the Power On LED will light up


.. _user-guide-esp32-s2-kaluga-1-kit-software-setup:

Software Setup
^^^^^^^^^^^^^^

Please proceed to :doc:`../../get-started/index`, where Section :ref:`get-started-step-by-step` will quickly help you set up the development environment.

The programming guide and application examples for your ESP32-S2-Kaluga-1 kit can be found in `esp-dev-kits <https://github.com/espressif/esp-dev-kits/tree/master/esp32-s2-kaluga-1>`_ repository on GitHub.


Contents and Packaging
----------------------

Retail orders
^^^^^^^^^^^^^

If you order one or several samples of the kit, each ESP32-S2-Kaluga-1 development kit comes in an individual package.

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32s2-kaluga-1-kit-v1.3-package-3d.png
    :align: center
    :alt: ESP32-S2-Kaluga-1 - package
    :figclass: align-center

    ESP32-S2-Kaluga-1 - package


The contents are as follows:

- Main Board
    - ESP32-S2-Kaluga-1
- Extension Boards:
    - ESP-LyraT-8311A
    - ESP-LyraP-CAM
    - ESP-LyraP-TouchA
    - ESP-LyraP-LCD32
- Connectors
    - 20-pin FPC cable (to connect ESP32-S2-Kaluga-1 to ESP-LyraP-TouchA)
- Fasteners
    - Mounting bolts (x8)
    - Screws (x4)
    - Nuts (x4)

For retail orders, please go to https://www.espressif.com/en/company/contact/buy-a-sample.


Wholesale Orders
^^^^^^^^^^^^^^^^

If you order in bulk, the boards come in large cardboard boxes.

For wholesale orders, please go to https://www.espressif.com/en/contact-us/sales-questions.


Hardware Reference
==================


Block Diagram
-------------

.. Image of v1.2 is used as there are no visual changes

A block diagram below shows the components of the ESP32-S2-Kaluga-1 and their interconnections.

.. figure:: https://dl.espressif.com/dl/schematics/pictures/esp32-s2-kaluga-1-v1.2-block-diagram.png
    :align: center
    :alt: ESP32-S2-Kaluga-1 block diagram
    :figclass: align-center

    ESP32-S2-Kaluga-1 block diagram


Power Supply Options
--------------------

There are four ways to provide power to the board:

- Micro USB port, default power supply
- External battery via the 2-pin battery connector
- 5V and GND header pins
- 3V3 and GND header pins


.. _user-guide-esp32-s2-kaluga-1-kit-ext-board-compatibility:

Compatibility of Extension Boards
---------------------------------

If you want to use more than one extension board at the same time, please check the table given below.

.. list-table::
   :widths: 20 15 33 32
   :header-rows: 1

   * - Boards Used
     - HW Conflict
     - Limitations
     - Solution
   * - 8311A v1.3 + CAM v1.1
     - I2S Controller
     - ESP32-S2 has only one I2S interface. But both extension boards require connection via the ESP32-S2's I2S interface (LyraT-8311A in Standard mode, ESP-LyraP-CAM in Camera mode).
     - Utilize time division multiple access, or use a different audio module that can be connected via other GPIOs or DAC.
   * - TouchA v1.1 + LCD32 v1.2
     - IO11, IO6
     - Touch actions cannot be triggered because of the multiplexed pin IO11. ESP-LyraP-LCD32 will not be affected because its BLCT pin will be disconnected from IO6.
     - Do not initialize IO11 (NETWORK) for your ESP-LyraP-TouchA, or configure the BLCT pin to `-1` (= do not use BLCT) for your ESP-LyraP-LCD32.
   * - 8311A v1.3 + LCD32 v1.2
     - IO6
     - BLCT pin of ESP32-S2-Kaluga-1 will be disconnected from IO6.
     - Configure the BK pin to `-1` (= do not use BLCT) for your ESP-LyraP-LCD32.
   * - TouchA v1.1 + 8311A v1.3
     - Pin BT_ADC on ESP-LyraT-8311A
     - This pin is required for initialization of the six button on ESP-LyraT-8311A. At the same time, ESP-LyraP-TouchA needs this pin for its touch actions.
     - If you plan to use buttons on ESP-LyraT-8311A, do not initialize pin IO6 (PHOTO) for your ESP-LyraP-TouchA.
   * - TouchA v1.1 + CAM v1.1
     - IO1, IO2, IO3
     - Cannot be used simultaneously because of the mentioned multiplexed pins.
     - For ESP-LyraP-TouchA, do not initialize IO1 (VOL_UP), IO2 (PLAY), and IO3 (VOL_DOWN).
   * - TouchA v1.1 + LCD32 v1.2 + CAM v1.1
     - IO1, IO2, IO3, IO11
     - Conflicts on the mentioned multiplexed pins.
     - For ESP-LyraP-TouchA, do not initialize IO1 (VOL_UP), IO2 (PLAY), IO3 (VOL_DOWN), and IO11 (NETWORK).
   * - TouchA v1.1 + LCD32 v1.2 + 8311A v1.3
     - IO6, IO11
     - If ESP-LyraT-8311A's pin BT_ADC is used to initialize the board's six buttons, IO6 and IO11 will not be available for the other boards.
     - Do not initialize IO11 (NETWORK) for your ESP-LyraP-TouchA. Also, if you need to use BT_ADC, do not initialize IO6 (PHOTO).

Also, all extension boards and the :ref:`JTAG interface <jtag-debugging-tip-jtag-pins-reconfigured>` share the same pins IO39, IO40, IO41 and IO42. For this reason, the following may disturb the JTAG operation:

* Plugging in any extension board
* Debugging an application that is using an extension board


Hardware Revision Details
=========================

ESP32-S2-Kaluga-1 Kit v1.3
--------------------------

* The following pins re-assigned to fix the download issue

  * Camera D2： GPIO36
  * Camera D3： GPIO37
  * AU_I2S1_SDI： GPIO34
  * AU_WAKE_INT： GPIO46

* RGB pin header moved to the board's edge
* All dip switches moved to the flip side for convenient operation


ESP32-S2-Kaluga-1 Kit v1.2
--------------------------

:doc:`Initial release <user-guide-esp32-s2-kaluga-1-kit-v1.2>`


Related Documents
=================

.. toctree::
    :hidden:

    user-guide-esp32-s2-kaluga-1-kit-v1.2.rst
    user-guide-esp-lyrap-cam-v1.1
    user-guide-esp-lyrap-lcd32-v1.2
    user-guide-esp-lyrat-8311a_v1.3

- `ESP32-S2-WROVER Datasheet <https://www.espressif.com/sites/default/files/documentation/esp32-s2-wrover_esp32-s2-wrover-i_datasheet_en.pdf>`_ (PDF)
- `ESP Product Selector <https://products.espressif.com/#/product-selector?names=>`_
- :doc:`../../api-guides/jtag-debugging/index`

- `ESP32-S2-Kaluga-1 Schematic <https://dl.espressif.com/dl/schematics/ESP32-S2-Kaluga-1_V1_3_SCH_20200526A.pdf>`_ (PDF)
- `ESP32-S2-Kaluga-1 PCB Layout <https://dl.espressif.com/dl/schematics/ESP32-S2-Kaluga-1_V1_3_PCB_20200526AE.pdf>`_ (PDF)
- `ESP32-S2-Kaluga-1 Pin Mapping <https://dl.espressif.com/dl/schematics/ESP32-S2-Kaluga-1_V1.3-Pin-Mapping-v0.1.xlsx>`_ (Excel)

For other design documentation for the board, please contact us at sales@espressif.com.


    