This code is installed and run in a personal computer to communicate with arduino microcontroller. The code includes functions to set PID gains and send a desired pressure waveform. The code is coded in C sharp (i.e., C++ ) code and can be installed as a standard Windows software, uninstalled in the Control Panel of Windows. Once the software is installed, one can find the program Valve Control Interface and Communication GUI in Start up> All programs. Through a computer, this code talks to an arduino board, which is already downlowed for the embeded code, which will be described in the section 7. The GUI enables the user to interact graphically and control the controller unit. Communication elements such as BAUD rate are easily accessible from the GUI. A graph in GUI shows the current pressure as it is received. Access to a PID controller parametes is allowed and the target pressure can be either constant or varying. The communication is done over a Serial port. Significant parts of this program are segments of open source code found over the internet called ZedGraph (http://sourceforge.net/projects/zedgraph/).