500-piece assortment

Infrared String Bass

Infrared String Bass

[youtube http://www.youtube.com/watch?v=acoaN4IIqNw?wmode=opaque&w=620&h=349] In this project we’re going to take inspiration from Len Keeler’s original Elastic String Bass. We’ll pick it up (no pun intended) and run with it, adding multiple strings for different tonal qualities, etch our own printed circuit board (PCB), and of course, demonstrate the instrument. First we will breadboard the basic version […]

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Projects in Motion: Control Three Types of Motors with 555 Timers

Projects in Motion: Control Three Types of Motors with 555 Timers

[youtube http://www.youtube.com/watch?v=VJfBJJ2Y1kA?wmode=opaque&w=620&h=349] With an estimated one billion 555 timers manufactured annually, you know this component must be versatile! We’re going to learn how to build and control drivers for three very different types of motors using a breadboard, resistors, diodes, transistors, and some 555 timers (along with a sprinkling of CMOS logic). These motor drivers […]

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Game Show Buttons

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 the other one out, until […]

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