(in)visible

sew a bigger circuit, step 1:

•You will need the following materials: two stiff felt squares, 1 infrared LED, 1 regular LED, 2 3-volt batteries, 1 2-cell battery holder, 2 resistors (~180 ohms), 2 pairs of snaps, needle-nose pliers and a needle with conductive thread. (See the resources page for retailer suggestions.)

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