How to use relay with arduino - Turn on and off 220V AC lamp

[@Dbfatherinfo]

i like your way and style to teach us thanks.. i got it really fast cause you have teach us very nice

[@miliohm]

Thanks, really apreciate it

[@deepsaha5096]

Can we connect any terminal of the load with the relay. Or we have to connect any specific terminal??

[@rudraryabiswas6446]

i love you brother , my project worked

[@camotobe]

Is there a way to power arduino from that relay???. It would be fine if i have only one power source instead of two.

[@miliohm]

Juat use some AC to DC adapter. Like 5V power supply

[@camotobe]

@miliohm yes but thats two.

[@miliohm]

@@camotobe and the first is?

[@adamwalter2573]

And what if I have a random layout in sockets, when in some of them ground is on left and in others on the irght ? It would mean that relay would be on LOW side and lamp would be always on PLUS side so under voltage ! btw, you did not mention about 3-wire 230v setup...

[@miliohm]

Closed circuit means a lamp should connected to V+ and GND or in AC it means phase and neutral. Any of wire opened it would turn the lights off. No matter which wire. Sorry about three wire setup. In my country only has two wire. But for three wire you can either cut the phase or neutral cable.

[@adamwalter2573]

@@miliohm no problem. I've just solved my problem. I also have 2-wires in sockets, so I connected gnd to neutral and set up my relays, but before I connect my relays to any socket, I need to make sure it has power on left on left side, because this is the line where my relay is. If I forget about it, relay will be on low side. I know, sounds weird, but this is - I guess - the only proper way to set it up. Oh, I need gnd, because I connect also 3-wire tools to this relay. BTW, For some reason my relay does not go into low state when no signal is passed to it. It's still on (!). It's happy to work with even 3.3V signal, but for sometimes it's not enough. Did you also face this problem ?

[@99199678]

Good job 👏 Thank you 🙏

[@miliohm]

You are welcome

[@naufal6560]

Does it works with water pump 220v too?

[@miliohm]

Sure

[@AzizMelb]

Does it matter if I cut the black wire and connect it to the relay instead of the white wire?

[@miliohm]

Nope, that would works too

[@tiagorodrigues3425]

Anyone know how what cables to connect if using the germany cables? brown, blue and yellow/green

[@moussaab8292]

Please, I have a problem when writing pineMode (7,OUTPUT) The relay works directly without typing HIGH

[@miliohm]

Try LOW instead of HIGH

[@moussaab8292]

@@miliohm Yes, it works on the contrary, where is the problem?

[@botanahmed3527]

Nice demo

[@anythingyoulove2385]

Thankyou

[@02herogamer44]

Sir really nice but give me the link of the code

[@wisnuindrawan6496]

ganbatee :D, keep inspiring

[@miliohm]

Thank you, keep comment : )

[@imranali-po7bl]

Mobile technology

[@AleZakko]

your accent... LOL

[@miliohm]

you definitely can't guess where I am from

[@AleZakko]

@@miliohm probably not England or USA and your accent it's just meh 😂

[@jonasdriemel]

halts maul