Heat sinks are in the store. http://www.thecustomsabershop.com/88...ole-P1138.aspx
Might be out of stock but give it time. Second, read the forum especially the noob sections, not being rude, there is a lot of information and learning there that you'll need and find useful. Since you are using the NB the formula for calculating the resistors is in the manual, read it several times before you wire anything. Or look up ohms law in the forums. You'll need to know the forward voltage of the led you are using as well as the battery voltage...sine using the NB this wil be 3.7v.
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