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by Joshua

  1. Strip the ends of all wires, including the Battery Holder.
    • Strip the ends of all wires, including the Battery Holder.

  2. Solder the Diode to the + (Positive) solder point on the solar cell.
    • Solder the Diode to the + (Positive) solder point on the solar cell.

    • Note: The Diode has a black bar on it. That side is soldered to the Red wire, and the non black bar side is soldered to the solar cell.

    • Solder the Red wire to the other side of the diode.

    • Cute excess Diode leg lengths.

    • Twist the Red Solar Cell wire together with the Red wire from the Battery holder.

    • Solder the Red wires to the Positive terminal on the USB Circuit.

    • Solder the loose Black wire to the Negative side of the Solar Cell.

    • Twist the Black Solar Cell wire together with the Black wire from the Battery Holder.

    • Solder the Black wires to the Negative terminal on the USB Circuit.

    • Move the white switch back towards the Negative terminal. (That sets the USB circuit to the "on" position.)

    • Clip the red and white LEDs off the USB Circuit. They're not used in this project.

    • The rechargeable AAs may be dead, charge them up quickly with a wall AA charger.

    • In a pinch, use regular AAs for a quick test. NEVER try and solar charge regular AAs.

    • When in doubt, try a different USB device.

    • While an Altoids tin works well, it is metal and conductive.

    • Using a $1 Store plastic food container or cheap wooden box is always a good solution.

Finish Line

Attached Documents

Joshua

Member since: 11/16/2017

47 Guides authored

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