Arduino enthusiasts looking for a new project to keep them busy this weekend might be interested in how to use the Arduino IoT Cloud and Amazon Alexa to interact with your sensors. A new project ...
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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