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Messages - OfficerMike

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Say Hi! / Here I am!
« on: June 10, 2008, 02:40:53 AM »
I'm a 19-year-old from Florida and I'm half way through my two-year computer science degree... hopefully I'll figure out what I'm doing with my life in the next year. I discovered Johnny Lee's work through random browsing on Instructables, and I've already built my first IR pen on my own. I'm interested in seeing what the Wii Whiteboard app can do for my dabblings in PhotoShop, so I might become a regular around here for a bit.

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IR Pens / My first pen & power supply
« on: June 09, 2008, 04:57:32 PM »
My idea was to build a reusable power supply box borrowing concepts from ObsidianX's USB/phone cord device. Mine, however, uses a mono audio cable to connect pens, rather than a phone cable, and it also has a resistor built into the supply box, so there is no need for a resistor in each pen. Each new pen only requires a momentary switch, a 1/8" audio jack, and an LED. This also allows me to connect multiple pens just by attaching a splitter.

My power supply has a retractable USB cord from a notebook mouse on clearance at RadioShack ($10), a 68 ohm resistor, a 1" x 2" x 3" project box, and a 6' long 1/8" mono audio cable.



My first pen uses RadioShack's 276-143 LED, a 1/8" audio jack, and one of three ridiculously tiny momentary switches taken from my sacrificial notebook mouse (good device for parts), all inside a normal Crayola marker body. The LED is mounted in the tip with a soft foam earplug.




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