Stationary IR-Source

From Smoothboard

The Presenter requires just one IR-Source to obtain a high tracking resolution. A stationary IR-Source is just that, a source of infrared light that is stationary.

Make a stationary IR-Source

A stationary IR-Source is essentially an IR-Pen with a open/closed (manual on/off) switch instead of a momentary switch. Follow the IR-Pen instructions but use a more appropriate housing and an open/closed switch.

Home made stationary IR-Source

This stationary IR-Source is relatively easy to build. The magnets allows it to be placed anywhere on the whiteboard. Because I am over-powering the IR-Led with 2.4v I have used a resistor to protect the IR-Led.

• Parts:
  • Vishay TSAL6400
  • 8ohm resistor (Gold/Black/Red/Brown stripped resistor)
  • A double AAA-battery case with switch
  • 2x AAA NiMh batteries
  • Magnets

• Construction
  • Remove wires from case
  • Cut 1 leg IR-Led short
  • Crimp resistor to leg
  • Wrap components into case and crimp/solder to improvised connections inside battery case
  • Epoxy glue IR-Led to front of case
  • Epoxy magnets to other end
  • Cover magnets with electrical tape to reduce surface scratching

Buy a Stationary IR-Source

The Nitendo Wii requires a 'Sensor Bar' which is a just a stationary IR-Source. A 'Wiress Sensor Bar' is what you will require. These can be purchased from ebay or from a variety of electonic, computing or gaming retail shops for less than $20US.