Cheap interactive whiteboard.

A very cheap solution(about 50$) to transform your flat screen display(projected screen or flat panel) into an interactive whiteboard, an idea by Johnny Chung Lee.

- A computer with a bluetooth adapter(most laptops have built-in bluetooth chipsets), or buy one(about 15$).
- An infrared pen. You can build the pen yourself or get a pre-made one.
- A Nintendo WII Remote Controller(about 35$).
- A flat surface display (projected screen or flat panel).
- Windows operating system.

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