Relay Shield for Arduino

By on March 5, 2011
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Shield to control 6 relay, 6 digital input and 6 analog input with Arduino Duemilanove, Arduino UNO or Seeeduino. The digital inputs and relay outputs are equipped with an LED that indicates the status. The lines of I/O are connected to the Arduino through corresponding pin-strip pitch 2.54 mm. It gets its power directly from the Arduino module, which provides the 5 volt regulator derived from their contacts between the 5V and GND. The mini-relay Shield of work at 12 volts, so that the relays are working properly will have to connect the Arduino module with an external power supply can provide this voltage. The card can be used in many applications and in many ways. Find in this page a little sketch as to manage I/O via serial commands.

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  2. Federico

    May 3, 2011 at 8:05 PM

    Very good job, just what i need, y will buy, it is posible you make one for Arduino Mega 1280 with 16 relay, if you send my proto details, y will pay you, how can i contact you?

  3. Giuseppe

    June 7, 2011 at 10:38 AM

    Two questions:

    What type of relays do you have on the board?
    Normally Open?, Normally Closed?, Bistable?

    Where can I buy it?
    I don’t see the option to add it to the cart


  4. Kevin Mai

    July 7, 2011 at 3:05 PM

    Is there a way of adapting this circuit to an arduino board?

    The relays I found are bigger than the space on the board.. do you have the EAGLE or PCB Wizard file, in order for me to go ahead and adapt it?



  5. Boris Landoni

    July 8, 2011 at 8:24 AM

    The shield has the same dimensions of Arduino. I haven’t the eagle file. I used Easy PC (Number One) . If it could be useful for you, I’ll public the files.

  6. Kevin Mai

    July 20, 2011 at 2:45 AM

    it’d be really useful as I found the relays but are milimeter or two bigger and won’t fit on the pcb.

    By the way, I’m reading 4,75v on the diode in parallel with the relay and the led + resistor.

    Where am I failing to get the 12v? correct me if wrong, but is it the NPN transistor’s fault, not to amplify up to 12v?

    also, on the schematic.. I see J1, J2 and J3.. how are they connected between? I’m pretty new on electronics and it’s getting complicated..

    Greetings from Argentina ^^

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  8. John Bassett

    August 17, 2012 at 3:15 PM

    What is the relay specification/ part number ? for example Amps DC, ? Volts DC AC, dimensions.

  9. Quang Phúc Trần

    November 15, 2013 at 5:51 AM

    can you pulish PCB Wizard file ? thank you

  10. Pingback: Relay Shield para Arduino | Automatismos Mar del Plata

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