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Arduino Relay's and Light Dimming

e14 Contributor

Hey guys, I am working on hooking up an Arduino UNO to the ceiling lights in my room so that I can control them remotely. My current plan is to unhook the switch from the wiring  then in it's place hook the wiring to some kind of a relay then hook the relay to the Arduino UNO. The only problem is that I have no idea what relay i should get or even where to get one. So firstly if you could provide any information on how to pick the correct relay (or even provide a link to a specific type) then that would be great. Secondly I want to have the lights be able to dim so if you all could provide any information on how to set up dimmers and such  that would also be great. And finally it would be a huge help if you all could provide any additional information that I may need for this project. Thanks so much, I'm kind of a newbie to this stuff so sorry I had a lot of broad or stupid sounding questions.

 

Thanks again

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    You don't want to do voltage dimming with relays.  They have a maximum switching speed and would probably weld themselves if you tried to use them as dimmers.  Also they would make a nasty chattering.  Look at AC SSR's if you plan on PWMing or turing on and off rapidly.  You could also look into Triacs and SCR's though your electronics will get more complicated with those.

     

    Also, I agree that you shouldn't be playing with AC as a starter project.  Try using LED's instead to get some concepts down.

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    You don't want to do voltage dimming with relays.  They have a maximum switching speed and would probably weld themselves if you tried to use them as dimmers.  Also they would make a nasty chattering.  Look at AC SSR's if you plan on PWMing or turing on and off rapidly.  You could also look into Triacs and SCR's though your electronics will get more complicated with those.

     

    Also, I agree that you shouldn't be playing with AC as a starter project.  Try using LED's instead to get some concepts down.

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