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Step 4Battery Holders
So I used 2 kinds of battery holders (to go with the two joule thief circuits) because I wanted to use 3 batteries with the red LEDs and only 1 battery with the blue LEDs. This was because there were many more red LEDS than blue ones and because my red ones were 12000 mcd and the blue ones were only 6000 mcd. Putting them in separate circuits allowed me to dedicate more battery power to the reds.
Image 1: This first image shows how I made a battery terminal using xtank5's design, it's simple and again I will leave you to the original instructable for it.
http://www.instructables.com/id/Battery-Holder-Version-2/
Image 2: This second battery holder was made out of a pill bottle I found lying around. Basically, a hole in the lid for the (+) wire that connects to a piece of aluminum foil, then batteries (3 in this case) and a piece of foil at the bottom that is connected to the (-) terminal, which is supported by some small pieces of folded cardboard (to make it somewhat "springy").
Image 1: This first image shows how I made a battery terminal using xtank5's design, it's simple and again I will leave you to the original instructable for it.
http://www.instructables.com/id/Battery-Holder-Version-2/
Image 2: This second battery holder was made out of a pill bottle I found lying around. Basically, a hole in the lid for the (+) wire that connects to a piece of aluminum foil, then batteries (3 in this case) and a piece of foil at the bottom that is connected to the (-) terminal, which is supported by some small pieces of folded cardboard (to make it somewhat "springy").
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