Try several LEDs in parallel, with a 100 Ohm resistor to EACH ONE.
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Do you mean mA or V ? Most LEDs I've met need 10s of mA to work.Steve
I want to use these LEDs from amazon. http://www.amazon.com/microtivity-Clear-Blue-Resistors-Pack/dp/B004UZCADG/ref=sr_1_14?ie=UTF8&m=A2E0IHQCUI9LTK&s=generic&qid=1325176601&sr=1-14
3.0 or 3.2V