Wii Remote Hack Part I : Building the light pens

$150...Really. What made it so expensive?

The capacitor is a great idea. You can buy about 100 micro switches on ebay for $10 plus shipping, or I don't know if you have 99 cent only stores where you are but they sell a little 99 cent FM scan radio that has two micro switches and a lot of other useful parts inside of it.

If you separate the circuit with the LED using a switch and add a spring, you'll have a pen that activates when you press.

can you tell me the specifications of the led you use?

word dey got served

OH! My bad. Not US dollars-- TT.  So about $5 USD a pen. Sorry guys. Nice job.

Nicely done... But $150 for 2 pens!?!?

I did more or less the same thing with dry erase pens but no capacitor and powered it with watch/calculator batteries--about $20 for 4 pens.

My base model is $5.50 shipped, on ebay. Select a pen from user shakespeare1212.

Great job, I've been doing a lot of research, I was wondering, should I get a capacitor just for safe measure?

Multiply that by 2 for for two pens, and you come up with almost the same price that we paid.