Motion Controlled Ultrasonic Lamp using Arduino

Recently I've been learning about Ultrasonic waves and how to harness their power. It's simple enough to make some type of sonar device, but I wanted to take at a step cooler and see if I could use Ultrasonic waves to not only detect movement, but also the direction of that movement. So let's take it to the ultimate level of awesomeness and use ultrasonic waves to make a motion controlled desk lamp. There's ...

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