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Video Overview

Connect an Arduino Ground Pin to the Ground Pin of your relay.
  • Connect an Arduino Ground Pin to the Ground Pin of your relay.

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Connect the Arduino 5V pin to the Relay's middle pin.
  • Connect the Arduino 5V pin to the Relay's middle pin.

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Connect Pin 13 to the Relay's Signal pin.
  • Connect Pin 13 to the Relay's Signal pin.

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Insert the LED into the bread board so that the Cathode (shorter pin) is on the left hand side.
  • Insert the LED into the bread board so that the Cathode (shorter pin) is on the left hand side.

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Insert a 220 Ohm Relay so that one pin is in line with the LED's Anode (longer leg). The 220 Ohm Relay has the bands: Red, Red, Black, Black, Brown.
  • Insert a 220 Ohm Relay so that one pin is in line with the LED's Anode (longer leg).

  • The 220 Ohm Relay has the bands: Red, Red, Black, Black, Brown.

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Connect the Cathode to a Ground pin on the Arduino.
  • Connect the Cathode to a Ground pin on the Arduino.

  • The Cathode is the negative (shorter) leg of the LED.

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Connect the 3.3V Arduino Pin to the Relay.
  • Connect the 3.3V Arduino Pin to the Relay.

  • The 3.3V jumper should go to the NC side of the screw socket.

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Connect the Relay's (middle screw socket) to the 220 Ohm Resistor.
  • Connect the Relay's (middle screw socket) to the 220 Ohm Resistor.

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  • Grab the code and upload it to your board.

  • You should start to hear the click, click of the relay switching on and off. There is also a red light on the module to tell you when it switches.

  • The Relay can be use to control up to 250VAC but we DO NOT recommend you play with this sort of voltage / current unless you are an electrician!

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  • This is what a working relay looks (and sounds) like!

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Finish Line

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Madeleine Schappi

Member since: 09/27/2017

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