DIY Solar Lantern - Part 3/3

solar flashlightThis is how the cover looks after screwing the switch and pressing down the mini solar module/solar cell with double sided adhesive tape.

Next would be to tape the terminal block to the battery.

solar lantern

The way I did it is to tape a horizontal terminal block and then add 2 vertical terminal blocks on each side. One side would be wired to the negative terminal of the battery and the other side to the positive. The positive side goes to the switch first and not directly to the battery so I can turn it on and off when needed.

Below is a closeup view of the blocking diode. I used an old IN4001 . The diode has a white bar. The white bar is wired to the terminal (going to the side of the battery) while the other side of the diode goes to the ( ) side of the solar cell.

diy solar lantern blocking diode

Here’s how it looks from the other side. At first I thought of using just 1 big LED but later on, I decided to use many smaller bright white LEDs.

diy solar lantern

Here’s a top view shot

diy solar lantern wiring

Here’s a closeup of one of the LEDs. One side is connected to the (-) vertical terminal block and the other side at the ( ) terminal block.

solar LED lights

Top view shot of the 6 LEDs. 3 on each side. The LEDs in a way hold the 2 vertical terminal blocks together which is kinda neat.

solar LED lights

Side view.

solar lantern

Lastly, here’s the finished product.

solar powered lantern

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4 Responses to 'DIY Solar Lantern - Part 3/3'

  1. V. Grissom - May 7th, 2008 at 9:48 pm

    Maybe turn the jar around, and mount the solar cell inside it. This way, the whole thing is rainproof - switch on the underside, solar cell inside.

  2. Peter - May 7th, 2008 at 10:22 pm

    How about a picture of the lamp lit?

  3. noel - May 11th, 2008 at 9:50 pm

    @V.Grissom

    I might just try that.

    @Peter

    I’ll post it soon

  4. Doug - June 11th, 2008 at 11:31 pm

    Hi Noel, I’m an editor at Popular Science, and was wondering if you’d be interested in adapting this project for the magazine. Please let me know when you have a chance.


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