diff --git a/USB PD ST4500 Set voltage/.gitignore b/USB PD ST4500 Set voltage/.gitignore
new file mode 100644
index 0000000..89cc49c
--- /dev/null
+++ b/USB PD ST4500 Set voltage/.gitignore	
@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
diff --git a/USB PD ST4500 Set voltage/include/README b/USB PD ST4500 Set voltage/include/README
new file mode 100644
index 0000000..194dcd4
--- /dev/null
+++ b/USB PD ST4500 Set voltage/include/README	
@@ -0,0 +1,39 @@
+
+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 usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+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/USB PD ST4500 Set voltage/lib/README b/USB PD ST4500 Set voltage/lib/README
new file mode 100644
index 0000000..6debab1
--- /dev/null
+++ b/USB PD ST4500 Set voltage/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 executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, 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
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html
diff --git a/USB PD ST4500 Set voltage/platformio.ini b/USB PD ST4500 Set voltage/platformio.ini
new file mode 100644
index 0000000..11709e3
--- /dev/null
+++ b/USB PD ST4500 Set voltage/platformio.ini	
@@ -0,0 +1,20 @@
+; 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:nucleo_f411re]
+platform = ststm32
+board = nucleo_f411re
+lib_archive = false
+framework = arduino
+lib_deps = 
+    sparkfun/SparkFun STUSB4500@^1.1.5
+    wire
+monitor_port = COM5
+monitor_speed = 115200
\ No newline at end of file
diff --git a/USB PD ST4500 Set voltage/src/main.cpp b/USB PD ST4500 Set voltage/src/main.cpp
new file mode 100644
index 0000000..22127ac
--- /dev/null
+++ b/USB PD ST4500 Set voltage/src/main.cpp	
@@ -0,0 +1,116 @@
+#include <Arduino.h>
+
+#include <Wire.h>
+#include <SparkFun_STUSB4500.h>
+
+STUSB4500 usb;
+
+void setup() 
+{
+  Serial.begin(115200);  
+  Wire.begin(); //Join I2C bus
+  
+  delay(500);
+  
+  /* The Power Delivery board uses the default settings with address 0x28 using Wire.
+  
+     Opionally, if the address jumpers are modified, or using a different I2C bus,
+     these parameters can be changed here. E.g. usb.begin(0x29,Wire1)
+  
+     It will return true on success or false on failure to communicate. */
+  if(!usb.begin())
+  {
+    Serial.println("Cannot connect to STUSB4500.");
+    Serial.println("Is the board connected? Is the device ID correct?");
+    while(1);
+  }
+  
+  Serial.println("Connected to STUSB4500!");
+  delay(100);
+
+  /* Read the Power Data Objects (PDO) highest priority (1-3) */
+  Serial.print("PDO Number: ");
+  Serial.println(usb.getPdoNumber());
+
+  /* Read settings for PDO1
+     - Voltage fixed at 5V
+     - Current value for PDO1 0-5A, if 0 used, FLEX_I value is used
+     - Under Voltage Lock Out fixed at 3.3V (but will always return 0)
+     - Over Voltage Lock Out 5-20%
+  */
+  Serial.println();
+  Serial.print("Voltage1 (V): ");
+  Serial.println(usb.getVoltage(1));
+  Serial.print("Current1 (A): ");
+  Serial.println(usb.getCurrent(1));
+  Serial.print("Lower Voltage Tolerance1 (%): ");
+  Serial.println(usb.getLowerVoltageLimit(1));
+  Serial.print("Upper Voltage Tolerance1 (%): ");
+  Serial.println(usb.getUpperVoltageLimit(1));
+  Serial.println();
+
+  /* Read settings for PDO2
+    - Voltage 5-20V
+    - Current value for PDO2 0-5A, if 0 used, FLEX_I value is used
+    - Under Voltage Lock Out 5-20%
+    - Over Voltage Lock Out 5-20%
+  */
+  Serial.print("Voltage2 (V): ");
+  Serial.println(usb.getVoltage(2));
+  Serial.print("Current2 (A): ");
+  Serial.println(usb.getCurrent(2));
+  Serial.print("Lower Voltage Tolerance2 (%): ");
+  Serial.println(usb.getLowerVoltageLimit(2));
+  Serial.print("Upper Voltage Tolerance2 (%): ");
+  Serial.println(usb.getUpperVoltageLimit(2));
+  Serial.println();
+
+  /* Read settings for PDO3
+     - Voltage 5-20V
+     - Current value for PDO3 0-5A, if 0 used, FLEX_I value is used
+     - Under Voltage Lock Out 5-20%
+     - Over Voltage Lock Out 5-20%
+  */
+  Serial.print("Voltage3 (V): ");
+  Serial.println(usb.getVoltage(3));
+  Serial.print("Current3 (A): ");
+  Serial.println(usb.getCurrent(3));
+  Serial.print("Lower Voltage Tolerance3 (%): ");
+  Serial.println(usb.getLowerVoltageLimit(3));
+  Serial.print("Upper Voltage Tolerance3 (%): ");
+  Serial.println(usb.getUpperVoltageLimit(3));
+  Serial.println();
+
+  /* Read the flex current value (FLEX_I) */
+  Serial.print("Flex Current: ");
+  Serial.println(usb.getFlexCurrent());
+
+  /* Read the External Power capable bit */
+  Serial.print("External Power: ");
+  Serial.println(usb.getExternalPower());
+
+  /* Read the USB Communication capable bit */
+  Serial.print("USB Communication Capable: ");
+  Serial.println(usb.getUsbCommCapable());
+
+  /* Read the POWER_OK pins configuration */
+  Serial.print("Configuration OK GPIO: ");
+  Serial.println(usb.getConfigOkGpio());
+
+  /* Read the GPIO pin configuration */
+  Serial.print("GPIO Control: ");
+  Serial.println(usb.getGpioCtrl());
+
+  /* Read the bit that enables VBUS_EN_SNK pin only when power is greater than 5V */
+  Serial.print("Enable Power Only Above 5V: ");
+  Serial.println(usb.getPowerAbove5vOnly());
+  
+  /* Read bit that controls if the Source or Sink device's 
+     operating current is used in the RDO message */
+  Serial.print("Request Source Current: ");
+  Serial.println(usb.getReqSrcCurrent());
+}
+
+void loop()
+{
+}
\ No newline at end of file
diff --git a/USB PD ST4500 Set voltage/test/README b/USB PD ST4500 Set voltage/test/README
new file mode 100644
index 0000000..9b1e87b
--- /dev/null
+++ b/USB PD ST4500 Set voltage/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