.. _arduino:

Working With Arduino
======================

Hardware Connection
---------------------

Use an 8PIN cable to connect, please refer to the pin correspondence table below:

.. list-table:: Pin Correspondence Table
   :header-rows: 1
   :widths: 20 40 40
   :class: longtable

   * - e-Paper
     - Arduino UNO
     - Mega2560
   * - VCC
     - 5V
     - 5V
   * - GND
     - GND
     - GND
   * - DIN
     - D11
     - D51
   * - CLK
     - D13
     - D52
   * - CS
     - D10
     - D10
   * - DC
     - D9
     - D9
   * - RST
     - D8
     - D8
   * - BUSY
     - D7
     - D7

.. .. image:: img/arduino_pin.jpg

Install Arduino IDE
---------------------

You can refer to this tutorial to install Arduino IDE:

:ref:`install_arduino_ide` 

Run The Demo
--------------

Download the code by clicking this link: `Download Code <https://codeload.github.com/lafvintech/LAFVIN-2.13inch-ePaper-HAT/zip/refs/heads/main>`_

`Code Download <https://github.com/lafvintech/LAFVIN-2.13inch-ePaper-HAT/archive/refs/heads/main.zip>`_

After downloading and extracting the files, navigate to the Arduino folder where you'll find the example programs:

.. figure:: img/fold1.png
   :align: center
   :width: 80%
   
   *Arduino Example Folder*

Open the epd2in13_V4.ino file:

.. figure:: img/fold2.png
   :align: center
   :width: 80%
   
   *Opening the Example File*

Select the corresponding Board and Port in the Tools menu of the Arduino IDE:

.. figure:: img/arduino3.png
   :align: center
   :width: 80%
   
   *Selecting Board and Port*

Finally, click upload. A successful upload will look like this (Arduino 2.3.2):

.. figure:: img/arduino4.png
   :align: center
   :width: 80%
   
   *Successful Upload*

After uploading, you will see the example program patterns displayed on your e-Paper screen.

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