//Rotational Stepper:
#define step1 2
#define dir1 5
#define enableRotMotor 8
#define rotMicrostep 16  //MicrostepMode, only 1,2,4,8,16 allowed, because of Integer-Math in this Sketch
//Pen Stepper:
#define step2 3
#define dir2 6
#define enablePenMotor 8
#define penMicrostep 16 //MicrostepMode, only 1,2,4,8,16 allowed, because of Integer-Math in this Sketch

#define servoPin 9

C:\Program Files\Inkscape\share\extensions

def findPort():
    # Find first available Arduino by searching USB ports.
    # Return serial port object.
    try:
        from serial.tools.list_ports import comports
    except ImportError:
        return None
    if comports:
        com_ports_list = list(comports())
        ebb_port = None
        for port in com_ports_list:
            #inkex.errormsg(gettext.gettext(port[1]))
            if port[1].startswith("Arduino"):
                ebb_port = port[0]  # Success; EBB found by name match.
                break  # stop searching-- we are done.
        if ebb_port is None:
            for port in com_ports_list:
            	#inkex.errormsg(gettext.gettext(port[2]))
                if port[2].startswith("USB VID:PID=2341:0043"):
                    ebb_port = port[0]  # Success; EBB found by VID/PID match.
                    break  # stop searching-- we are done.
        return ebb_port

def listEBBports():
    # Find and return a list of all Arduino units
    # connected via USB port.
    try:
        from serial.tools.list_ports import comports
    except ImportError:
        return None
    if comports:
        com_ports_list = list(comports())
        ebb_ports_list = []
        for port in com_ports_list:
            port_has_ebb = False
            if port[1].startswith("Arduino"):
                port_has_ebb = True
            elif port[2].startswith("USB VID:PID=2341:0043"):
                port_has_ebb = True
            if port_has_ebb:
                ebb_ports_list.append(port)
        if ebb_ports_list:
            return ebb_ports_list


def list_named_ebbs():
    # Return discriptive list of all Arduino units
    ebb_ports_list = listEBBports()
    if not ebb_ports_list:
        return
    ebb_names_list = []
    for port in ebb_ports_list:
        name_found = False
        p0 = port[0]
        p1 = port[1]
        p2 = port[2]
        if p1.startswith("Arduino"):

def testPort(port_name):
    """
    Open a given serial port, verify that it is an Arduino,
    and return a SerialPort object that we can reference later.

    This routine only opens the port;
    it will need to be closed as well, for example with closePort( port_name ).
    You, who open the port, are responsible for closing it as well.

    """
    if port_name is not None:
        try:
            serial_port = serial.Serial(port_name, timeout=4.0)  # 1 second timeout!