Driving a Relay with Arduino
This video shows how to drive a relay using a transistor to turn it on and off using Arduino code.162-Driving a bare relay with a transistor and controlling it with an Arduino
Language: C++
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Resources & references
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External16 Channel Relay module 5V relay voltage fixedyoutube.com
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ExternalDatasheet for 2N3904 transistor (PDF)media.digikey.com
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External
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Internal
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