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excellent Cheap Easy to use sturdy
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  • Works great with Arduino Uno

    posted by diypwn on 05/27/2013

    Involvement:General (knows how to use it) - Ownership:more than 1 month


    Works out of the box with 5V microcontroller boards like the Arduino Uno. Just hook it up to Ground, 5V and a pin of your choice. Use writeDigital(HIGH) or LOW to switch the relay on or off (or rather close the circuit Common - Normally Open).


    The screw terminals (NO, NC, C) are not properly labeled so you will have to figure out which one is which by yourself. The Common terminal is in the middle :)

    The click is pretty loud and may be a bit annoying if you put your completed project in the bedroom.


    I have only used this relay with 12V DC fans that together draw less than 1A current. Even if the relay is rated higher I would not take the risk to go anywhere near the rating.


    Good value for money if you only need a single relay. Works great with 5V boards like Arduino Uno.

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