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Messages - jmWii

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1
IR Pens / Re: My Radio Shack IR Marker Wii Light Pen
« on: June 08, 2008, 11:19:34 AM »
I used 276-143 100 mA nominal 1.2V IR LED with max rating of 1.6V forward voltage, so no resistor was required with a 1.5V N cell battery.

The battery holder is definitely worth it for simple changes. It fits perfectly (with just a little sanding) inside the marker.

Jeff

2
Other / Modified LED Safety glasses for IR Headtracking
« on: June 06, 2008, 03:32:21 PM »
I took Johnny's idea of using LED safety glasses and swap with IR LEDs for head tracking. The LED glasses from Granger had two 3V batteries per LED for a total of 6V. I removed one cell (now 3V with neg side up) and soldered on a 15 ohm resistor for the 1.6V max IR LED from radio shack (nominal 1.2V) on negative lead. (See completed assembly on the lower right of the picture.) It works great with a "sporty" form factor :-)

Jeff


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IR Pens / My Radio Shack IR Marker Wii Light Pen
« on: June 06, 2008, 03:20:51 PM »
I made my pen with readily available radio shack parts: IR bulb, 1.5V N cell battery / holder, and momentary switch. The IR bulb sticks out of the pen, so it works great! I used string to pull down the assembly and pliers to pull up the switch out of the marker housing. Electrical tape around the bulb holds it in place with plenty of friction. I did have to trim the base of the LED to get it to fit through the marker. Johnny Lee's white board software is amazing!  :D

Jeff




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