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Electronics from scrap?

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    hollyda31 started this thread.
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    Electronics from scrap?

    I found some button batteries & LEDs in my bucket from computer breakdowns, and my sons have entertained themselves all evening with making simple circuits (after a short instruction). Any other ideas for electronics projects that can be made from scrap?


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    Mechanic688's Avatar
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    Google it, there's a ton of stuff out there. If you need resistors and such for a project, you can use a donor piece of equipment. Just need a resistor calculator. Hmmm where would we find one??

    Resistor color code calculator - 3, 4 and 5 band resistors

    LED calculator for single LEDs
    P & M Recycling - Specializing in E-Waste Recycling.
    If you enjoy your freedom, thank a vet.

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    I have been using the battery clip from motherboards and the led from the front of the computers to flatten the batterys I get from the motherboards.
    The blue ones work best.
    I don't want any partly charged batterys sitting around. They can short out, heat up, explode. Had it happen to me.

    Ok, ideas? Add a photoresistor so it only glows at night time..?
    Make them flash with some sort of circuity.
    Joule theif using parts from a CFL lightbulb.

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    Otto's Avatar
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    Homemade electromagnets can be fun for kids. Wrap some wire around a small iron bar, then hook the wire up to a battery. (Use some common sense on the selection of the battery or batteries.)

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    look at Instructables - DIY How To Make Instructions.

    Lots of simple to complexed tutorials.

    Eric
    I buy Tantalum Capacitors and offer other services. Check out my thread for more info.

    http://www.scrapmetalforum.com/scrap...-cap-more.html

    http://recycletantalumcapacitors.com/


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