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1 August, 11:42

How to make your own earthquake detector

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Answers (1)
  1. 1 August, 12:00
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    (x2) 741 OpAmps (Radioshack Catalog #: 276-007)

    (x1) 9V Relay (Radioshack Catalog #: 275-005)

    (xvar) jumper wires (Radioshack Catalog #: 276-102)

    (x2) Heavy duty 9V battery clips (Radioshack Catalog #: 270-324)

    (x2) 9V batteries (Radioshack Catalog #: 23-866)

    (x1) Prototyping PCB (Radioshack Catalog #: 276-170)

    (x1) Piezo Buzzer (Radioshack Catalog #: 273-080)

    (x1) 5K Ohm Potentiometer (Radioshack Catalog #: 271-1714)

    (x1) Potentiometer cap (Radioshack Catalog #: 274-415)

    (x1) 470 Ohm Resistor (Radioshack Catalog #: 271-1317)

    (x1) 3" diameter acrylic tube

    (x1) Magnet (Radioshack Catalog #: 64-1888)

    (xvar) lamp-pull ball-chain

    Tools:

    Solder

    Soldering Iron

    Wire Snips

    Hot Glue Gun

    I used a laser cutter to make my own personal enclosure, but one could easily modify a pre-made project enclosure to suit the needs of this project.
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