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3 x AAA Battery Holder with On/Off Switch and 2-Pin JST : ID 727 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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LED Mini Bike Light
LEDs for Beginners : 9 Steps (with Pictures) - Instructables
LEDs for Beginners : 9 Steps (with Pictures) - Instructables
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Tinkercad Circuits
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LED FlashLight 6 LED Light from 1.5V AA battery Circuit Unassembled Kit - - Amazon.com
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