Conecting a relay - General Electronics - Arduino Forum
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I've noticed in several pictures that a relay is controlled by the arduino by connecting the 5v arduino pin to the relay and the ground is connected through a transistor, with is controlled by another pin on the arduino. In other pictures I se that a normal output pin from the arduino is connected to the relay, and no transistor is used. What is the difference between these two approaches. Is there an advantage in using the transistor, or are these just two ways of doing the same thing? I put tw
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Looking for small relay part - General Electronics - Arduino Forum
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Electronic equilevant of latching relay circuitry - General Electronics - Arduino Forum
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Help on my Electronic Project Deployment - Project Guidance - Arduino Forum
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Relay stops working after mostly 2 times when LOAD is connecetd - Project Guidance - Arduino Forum
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How best I connect floor lamp to relay ? - General Electronics - Arduino Forum
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How to get a 5v relay to Work - General Electronics - Arduino Forum
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Do you need a resistor on a relay module? - General Electronics - Arduino Forum
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Hi Logic Driven Mechanical Relay - General Electronics - Arduino Forum
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Logic Level Converter with half voltage - General Electronics - Arduino Forum
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Schematic Help - General Electronics - Arduino Forum
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Connecting 8 Channel Relay Module To Arduino - General Electronics - Arduino Forum
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Wiring a Opto-Isolated Relay to Arduino - General Electronics - Arduino Forum