Buzzer

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30 Dec: How to Amplify a Piezo Buzzer

You probably looked this up because you wanted to know how to make your piezo buzzer more deafening. Or maybe you have a small battery to power your buzzer so the sound is too soft. In this tutorial, I will cover the Science behind Piezo Buzzer and how to amplify it with a simple technique. Hardware Required 3.7V Lithium Ion Battery Piezo Buzzer DC to DC Step Up Converter Software Required None The Concept So how...
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15 Sep: Thief Detector !!

Hi guys! Do you enjoy action movies or fancy make pretends about being a detective prodding for clues and analyzing cold hard cases? If the answer is yes, then you’re in for a treat! Today I am going to show you how to be a detective in your very own house. First, we will build a ‘Thief Detector’ that only involves a simple circuit. Even though it is simple, it offers an interesting solution where...