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DIY Science Projects

How to use ? - Lighthouse

  • Step 1

    Make two holes in a film can near its opening.

    Press two straw pieces as bush bearings.

  • Step 2

    This is a view from the top with the two straws push through the holes of the film can.

  • Step 3

    Take a piece of rubber and stick two neodymium magnets in between.

  • Step 4

    Poke a piece of bicycle spoke in the rubber as the axle or the shaf.

  • Step 5

    And now weave the two bicycle spokes in the two bearings.

  • Step 6

    One hole in the film can is split.

    This helps to put the axle in place.

  • Step 7

    Wind 800 turns of thin enamelled (insulated) copper wire (36 gauge) aroung the film can.

  • Step 8

    Scrape the copper wire ends with sand paper and connect them to a LED.

  • Step 9

    When rotating the spoke, the LED should light up.

  • Step 10

    Fold a strip of stiff card to create a turbine.

  • Step 11

    This is the turbine finished

  • Step 12

    Attach the turbine to the end of the bicycle spoke.

  • Step 13

    Using two sticks, fix and glue the generator to a bottle cap with a hole.

  • Step 14

    Screw the cap on a plastic bottle with the bottom part cut off.

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