Wiimote Smartboard With a handmade light pen Theory

Wiimote Smartboard With a hand-made light pen

Theory • An infra-red sensor is in the wiimote • HID(Human Interface Device) inside the wiimote makes the pen control the pointer • It detects the orientation of the controller from xy- z- axes • A bluetooth connection is set up to computer • When the pen emits infra-red in different positions, wiimote receives the signals and sends it to computer

Reasons for choosing this topic • We have a wiimote • Creative • Interesting • Challenging • Low cost

Materials Material Quantity Bluetooth USB 1 Nintendo Wiimote 1 AAbattery 2 Cost ----------------------------- AAA battery 1 $1. 75 Battery case 1 $2 Momentary switch 1 $5. 6 Marker pen 1 $5 Infra-red LED 1 $7. 5 Total : $21. 85

Procedure • 1. Remove ink from the pen • 2. Drill holes on the pen and Saw • 3. Add a LED to the tip of pen • 4. Weld the circuit and connect to a battery

Difficulties • Short circuit after welding • Wrong polarities • Making holes • Calibrating positions

Advantages • Less costly compared with the professional one • Easy to make • Convenient in teaching • Environmentally friendly • Broaden the use of wiimote

Applications • Teaching aid • Entertainment

Demonstration

Discussion