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raspberry-pi with relay
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Hello, previously, we have seen the working of an ultrasonic sensor and its use in the real world. In this tutorial, we are looking at one of the most discussed topics, which is the relay module. After the completion of this topic, you will underst
The Basics of Optocoupler Relay
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We have all heard of the term relay in our life at one point or another. So, what is a relay? What is it used for? What are its types? In this article, we will get to know about all of the above questions. But, more specifically about the optocoupler