Game Show Buttons

[youtube http://www.youtube.com/watch?v=JdY2uYVzm34?wmode=opaque&w=620&h=349] In this project, taken from Charles Platt’s book Make: Electronics, we’re going to breadboard a fairly complex circuit using 555 timers and an OR logic gate. Using these and some other, common components, we’ll build a game show button system. When one button is pressed, it automatically locks... Read more »

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