6 replies to this topic

[Wayneio]

Hi, I'm looking at controlling mains appliances with a netduino.

 

Will this product work for UK power (240V)? http://www.seeedstud...ield-p-693.html

I assume it's pretty simple in terms of code, just turning the relay on and off?

 

Also, from anyone's experience, is it still easy to access the other Digital IO ports for controlling other items?

[Wayneio]

Actually scratch that, this looks much safer! http://www.powerswit...es/PSTKKit.aspx

 

The only problem is it's out of stock and looks to have a USA style plug.

[Paul Newton]

EDIT: this reply was for the first part.

 

NO!!

 

The relay board says 70Watts at just 35Volts.

You need a part that is rated for 240Volts AC.

I think the web page is poor given that you have to follow a link to a separate Wiki to find the voltage of the relay contacts.

 

I am not sure your exact requirements, maybe this one from Hobbytronics. Miniature relay board. They have a few others too.

The description says 250VAC and 10 Amps. It can be driven with a TTL signal (you just have to connect it to a GPIO output - it has the driver transistor built in).

This is not a part I have used myself, but I can recomend Hobbytronics for supplying electonic components in the UK.

 

Hope this helps save your project from bursting into flames - Paul

 

Be extra careful with mains projects. If in doubt consult a qualified engineer.

[Paul Newton]

Yes.

Second one looks good.

Probaly better than the relay I suggested beacuase it has a housing to keep fingers out.

Much better to use a module for mains control.

Note that you have to provide you own power cord.

Paul

[Wayneio]

Hi Paul. Thanks for the info. That one you linked looks good, and it's nice and small compared to the options I found, which will be really useful.

[Paul Newton]

Hi Paul. Thanks for the info. That one you linked looks good, and it's nice and small compared to the options I found, which will be really useful.

Better to be safe than small.

[Wayneio]

Better to be safe than small.

 True, but also the price difference was quite big, especially as I will be buying a few.

 

So i'v also bought a cheap plastic box to keep the relay in and fingers out.