Step 4The Circuit
I used two batteries cause the LED needed more than 3V for full polarization...
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It`s scaled down by the site, most images on Instructables are actually much larger than they appear to be =D, click on the "i" box on the upper left of it, or go to this LINK:
then select ORIGINAL SIZE... its actually pretty big nice (3508x2480) 329 KB image =]