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Latest Blog Posts

  • 555 Timer Monostable Mode

    How to Use a 555 Timer in Monostable Mode

    It’s been about a year since my last tutorial. Over the last year I learned that teaching in the real world will take away time from teaching in the virtual world. Many people have contacted me asking about a tutorial for the 555 timer in Monostable mode. The great thing about this mode is that you […]

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  • GPS Tracker

    Anatomy of a Malicious GPS Tracker

    This is the kind of stuff I love. Recently I was given a GPS tracker from an individual. This tracker had been embedded in a victim’s car for 6 years. The following video examines the tracker’s components and method of install. Below the video you’ll find some close-up photos of the device. GPS Tracker Photos […]

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  • Math of the 555 Timer

    Math of the 555 Timer

    If you’ve been following along with the 555 timer series, this video describes how to derive the formula that describes the timing of the circuit. Starting with just 2 components, we’ll work our way to an answer.

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