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Playdough For Fun and Profit

Posted by timothy on from the not-the-trademarked-version dept.

morgan_greywolf writes with this snippet from Wired:"You're never too young (or too old) to start learning the joys of electronics. You don't need to know how to solder, or even how to plug circuit components into a breadboard. As long as you're past the 'I'm going to stick this up my nose' phase, this homemade playdough circuit project is a great way to introduce kiddos and adults alike to basic circuits and electricity."

1 of 70 comments (clear)

  1. Re:Kirkchoff's law fail by Clueless+Moron · · Score: 3, Insightful

    No, LEDs are only full brightness or off. To make an LED dim you pulse the current through it. It isn't actually dimmer, it just looks dimmer because it's turning on and off faster than you can see.

    Nonsense. You can make an LED anything from barely lit to full tilt by nothing more than controlling the current via the loading resistor. Try it yourself.