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PC shut down timer
How To Use A Watch
Build a Tone Generator--Improve Your Snap Circuits by Adding a 555 Timer IC
The Time Machine || An Awesome Clock Hack
Build an Optical Theremin--Improve Your Snap Circuits by Adding a 555 Timer Integrated …
How to Make 555 Timer IC Projects With Circuit Diagram
555 Timer IC
Servo Motor Tester
learn about the 555
How to make a 555 timer chip circuit
Posted:Feb 18, 2009
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