The Magic of Hall Effect Sensor

Demonstration of Hall effect in Action. Flipping the polarity of the magnet switches between the Red LED and yellow LED

 

YouTuber Solder Hub shares this quick video explaining how Hall effect sensors work. The little sensors are inexpensive and abundant. Many devices use them for proximity, motion sensing and more! Solder Hub recovered the one used for the experiment from an old CPU Fan.

In this video, I will show you how to build a simple and fascinating DIY project using a 4-pin Hall Effect Sensor. This project is powered by a 3.7V battery and uses two LEDs with a 100Ω resistor to demonstrate how magnets can control electronic circuits without any physical contact.

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Looking for more quick hits of electronics education? Checkout Collin’s Lab where we dive into sensors, soldering, solenoids and so much more!

 

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