diff --git a/arduino-example/.idea/.gitignore b/arduino-example/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/arduino-example/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/arduino-example/.idea/editor.xml b/arduino-example/.idea/editor.xml
new file mode 100644
index 0000000..ead1d8a
--- /dev/null
+++ b/arduino-example/.idea/editor.xml
@@ -0,0 +1,248 @@
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diff --git a/arduino-example/.idea/misc.xml b/arduino-example/.idea/misc.xml
new file mode 100644
index 0000000..ff62fa7
--- /dev/null
+++ b/arduino-example/.idea/misc.xml
@@ -0,0 +1,12 @@
+
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\ No newline at end of file
diff --git a/arduino-example/.idea/vcs.xml b/arduino-example/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/arduino-example/.idea/vcs.xml
@@ -0,0 +1,6 @@
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\ No newline at end of file
diff --git a/arduino-example/empty b/arduino-example/empty
deleted file mode 100644
index e69de29..0000000
diff --git a/arduino-example/include/README b/arduino-example/include/README
new file mode 100644
index 0000000..49819c0
--- /dev/null
+++ b/arduino-example/include/README
@@ -0,0 +1,37 @@
+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the convention is to give header files names that end with `.h'.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html
diff --git a/arduino-example/lib/README b/arduino-example/lib/README
new file mode 100644
index 0000000..9379397
--- /dev/null
+++ b/arduino-example/lib/README
@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into the executable file.
+
+The source code of each library should be placed in a separate directory
+("lib/your_library_name/[Code]").
+
+For example, see the structure of the following example libraries `Foo` and `Bar`:
+
+|--lib
+| |
+| |--Bar
+| | |--docs
+| | |--examples
+| | |--src
+| | |- Bar.c
+| | |- Bar.h
+| | |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+| |
+| |--Foo
+| | |- Foo.c
+| | |- Foo.h
+| |
+| |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+ |- main.c
+
+Example contents of `src/main.c` using Foo and Bar:
+```
+#include
+#include
+
+int main (void)
+{
+ ...
+}
+
+```
+
+The PlatformIO Library Dependency Finder will find automatically dependent
+libraries by scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html
diff --git a/arduino-example/platformio.ini b/arduino-example/platformio.ini
new file mode 100644
index 0000000..ff32615
--- /dev/null
+++ b/arduino-example/platformio.ini
@@ -0,0 +1,14 @@
+; PlatformIO Project Configuration File
+;
+; Build options: build flags, source filter
+; Upload options: custom upload port, speed and extra flags
+; Library options: dependencies, extra library storages
+; Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:uno_r4_minima]
+platform = renesas-ra
+board = uno_r4_minima
+framework = arduino
diff --git a/arduino-example/test/README b/arduino-example/test/README
new file mode 100644
index 0000000..9b1e87b
--- /dev/null
+++ b/arduino-example/test/README
@@ -0,0 +1,11 @@
+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html