5.Upload the Main Program
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This section will guide you on how to upload the code to your device.

First, open the main program file (Drawing.ino) that you downloaded

.. image:: img/upload0.png

Then connect the device to your computer using the included mini USB cable, open Arduino IDE, and select the correct port and board (Arduino Nano).

.. image:: img/upload1.png

.. attention:: 
    You need to remove the HC-04 Bluetooth module before uploading the code, otherwise you will get an error.

Then click the upload button and wait for the upload to complete.

.. image:: img/upload2.png

At this point, we have completed the installation of the main program.