For Greg Ruhlander's complete instructions on how to build your own computer keyboard with integrated am/fm radio, click here.
Unable to function without his trusty portable am/fm radio at his side—especially while working—Greg hit upon the idea of integrating it directly into his computer's keyboard. The big plus is no batteries required since the keyboard powers the radio. Taking a standard keyboard and small, portable radio, he designed a simple voltage reduction circuit to step down the keyboard's 5V to 3V, and there you have it: a convenient combination of two items or a boombox for geeks.
Tricked Out Keyboard Parts List
Allied Part #
Op amp, dual
680 Ù resistor
1K Ù resistor
10K Ù resistor
C1,C2 0.1 µF capacitor
Additional parts required: Standard computer keyboard; small radio (auto or manual); phone jack
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
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Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.