In this tutorial I will show you how to connect a relay board to a Raspberry Pi, relays are an electromagnetic switch that allows you to control a high voltage electrical circuit by opening and ...
In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...
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