LED Light Pen

It sparkles! It draws! It shoots energy balls!  It’s the LightPen!  This was my first success integrating code with a physical object.  Perhaps the documentation of this simple project will be useful to someone out there.

It works like this: Pen talks to PIC Micro Controller, PIC talks to a Processing applet on my PowerBook. Camera tracks the LED. It’s that simple!

Download PIC code (PicBasic):
Download Processing code:


Click on pictures for a larger image: