Knock (Piezo Sensor) Explained in 2 minutes

(30 Days of Arduino 25/30)
In this video, we’ll show you how a Piezo (knock) sensor works and how to use it in your own projects. You’ll learn how the sensor creates voltage when you press or tap it, and how to read that voltage using a multimeter.

Then, we’ll connect it to an Arduino and turn an LED off when the sensor detects a knock. It’s a simple and fun project that can be used in many creative ways!

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