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DIY stereo tube amp

DIY stereo tube amp

10/20/2009

Gio writes in to tell us about his latest vacuum tube-based audio amplifier design, the 5751 SRPP / EL84 (6BQ5)...

Touch-sensitive faucet

Touch-sensitive faucet

10/17/2009

Does grabbing onto a grimy faucet to turn on the water to rinse your hands strike you as an odd...

Energy-harvesting rocking chair

Energy-harvesting rocking chair

10/16/2009

Rochus Jacob designed this energy-harvesting rocking chair. It works by storing energy while you rock during the day, then lights...

Using sonar to save power

Using sonar to save power

10/15/2009

Here's a neat idea: using the standard microphone and speakers that are built into most recent laptops, researchers from Northwestern...

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Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 16th iteration!

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