How to Make a Potato Clock

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  • 1). Assemble your supplies. You'll need two common galvanized nails; three alligator clip/wire units - that is, alligator clips connected to one another with wire; two short pieces of heavy copper wire; a simple low-voltage LED clock unit; and two potatoes. Obtain a simple LED clock unit that functions from the power of a 1- to 2-volt, button-type battery.

  • 2). Open the battery compartment and remove the battery.

  • 3). Note that there is a positive (+) and a negative (-) terminal point where the battery was installed.

  • 4). Identify the potatoes as number one and number two.

  • 5). Insert one nail in each potato.

  • 6). Insert one short piece of heavy copper wire in each potato, placing it as far from the nail as possible.

  • 7). Use one alligator clip/wire to connect the copper wire inserted in potato one to the positive terminal in the clock unit.

  • 8). Use one alligator clip/wire to link the nail in potato two to the negative terminal in the clock unit.

  • 9). Use the final alligator clip/wire to link the nail in potato one to the copper wire in potato two.

  • 10

    Set your clock.

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