Using a standalone relay with an arduino.

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1

I am trying to figure out how to control a stand alone mechanical relay with an arduino to turn on and off a lamp using the serial monitor in IDE. The relay is 6vDC. I have a 6vDC battery. I was going to plug an extension cord into an outlet and splice one of the wires. I would then wire one wire to the common terminal on the relay and the other to the normally open terminal. I would then connect the relay to the 6vDC battery positive and negative leads. I don't know how I would connect the arduino to the circuit so that I could control it through serial monitor. Any help would be greatly appreciated.
Thanks!
Shawn.

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This tutorial shows how to hook up a relay to an Arduino

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And this one shows how to use grab characters from the serial monitor.

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If you are switching AC line make sure to switch the hot side, not neutral.

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Thanks for the tip groundfungus. JimboZA I have a seperate relay that I'm trying to connect to my arduino. I want to control the coil using the serial monitor. Can that be done?

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welchsc:
JimboZA I have a seperate relay that I'm trying to connect to my arduino. I want to control the coil using the serial monitor. Can that be done?

Check those tutorials.... One shows how to control a relay from a data pin. The other shows how to control a data pin from the serial monitor. So, yes.