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Indoor Decorative Solar Lights

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I had several solar garden lights left over from the original Solar Shrub project, so I decided to hack a few of them for some colorful indoor decorative lighting.

Typical solar garden lights pack a lot of electronics into a small cheap device. Most contain a solar cell, a Ni-Cad battery with charging circuit, a photoresistor, a booster circuit for the LED, and the LED itself.

Of course garden lights are normally plain white boring lights. I decided to add some color to them by replacing the LEDs and wrapping the electronics in a decorative frosted container.
 
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Step 1: Materials

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Most of what I needed was right there in the garden light. All I really had to do was disassemble the light, replace the white LED with a colored one, and mount the whole thing into a frosted plastic cup.

Here are the materials I used:
  • 1 - Solar Garden Light with round solar cell (Lowes #379421)
  • 1 - Frosted plastic drinking cup
  • 1 - AA battery holder (Radio Shack #270-401)
  • 1 - Red LED
  • 1 - Blue LED
  • 1 - Yellow LED
  • Speaker wire
  • Tie wraps

Step 2: Disassembling the Garden Light

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The garden lights I used had three screws holding the cover to the base. I removed the battery and screws, then cut the wires connecting the solar cell to the circuit board. Next I had to pry the solar cell from the base with a screwdriver (being careful not to crack the cell).

Step 3: Wiring Up the Board

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The garden light circuit board contained battery clip wires and a white LED. I desoldered the battery clip wires and replaced them with the red and black wires of the AA battery holder. Then, I replaced the white LED with a colored one. And finally, I tie wrapped the wires and battery holder together so they could hang down from the solar cell and point up into the plastic cup.
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