diff --git a/Processing/Adalight/Adalight.pde b/Processing/Adalight/Adalight.pde
index 9911cce..cdcbe64 100644
--- a/Processing/Adalight/Adalight.pde
+++ b/Processing/Adalight/Adalight.pde
@@ -121,8 +121,20 @@ void setup() {
   float                   f, startX, curX, curY, incX, incY;
 
   dh   = new DisposeHandler(this); // Init DisposeHandler ASAP
-  // Comment out this line to test the software without Arduino:
-  port = openPort();               // Open serial port to Arduino
+
+  // Open serial port.  As written here, this assumes the Arduino is the
+  // first/only serial device on the system.  If that's not the case,
+  // change "Serial.list()[0]" to the name of the port to be used:
+  port = Serial(this, Serial.list()[0], 115200);
+  // Alternately, in certain situations the following line can be used
+  // to detect the Arduino automatically.  But this works ONLY with SOME
+  // Arduino boards and versions of Processing!  This is so convoluted
+  // to explain, it's easier just to test it yourself and see whether
+  // it works...if not, leave it commented out and use the prior port-
+  // opening technique.
+  // port = openPort();
+  // And finally, to test the software alone without an Arduino connected,
+  // don't open a port...just comment out the serial lines above.
 
   // Initialize screen capture code for each display's dimensions:
   ge = GraphicsEnvironment.getLocalGraphicsEnvironment();