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Netduino and 5v relais 220v

Started by TalbotEv, Feb 18 2013 01:44 PM

relais

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2 replies to this topic

#1 TalbotEv

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7 posts

Posted 18 February 2013 - 01:44 PM

Hi there!

I have a project where i need to switch on and off a light. I have this relais of 5v which switches 220v on or off.

No i was wondering can i hook the relais on the netduino and have it switch te relais by using a digital io ?

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#2 Stefan

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1965 posts

LocationBreda, the Netherlands

Posted 18 February 2013 - 01:55 PM

Hi Talbot,

It is possible, but you'll need a transistor for that too. A relay pulls quite a lot of current which can't be provided by a GPIO pin.

See http://www.pcbheaven...istor_Circuits/ for more information about such a circuit.

Also: be very careful when interfacing with 220V. A mistake is easely made and can be quite fatal for you(r equipment).

_{"Fact that I'm a moderator doesn't make me an expert in things." Stefan, the eternal newb!}
My .NETMF projects: .NETMF Toolbox / Gadgeteer Light / Some PCB designs