Rexz

I control a smoke machine for my halloween display, I use a small relay which can flip an AC circuit, but I'm not using an arduino to power it (it's powered off a 12v relay board connected to a PC. If you're fog machine is like all the ones I've seen, it's simply running the 120v line voltage to the remote and back if you press the switch. It's not a lower trigger voltage to control a relay in the machine itself. Because it's controlling a motor/pump I'd get a more hefty relay that can handle more current than the one you picked out to handle spikes if they occur.

Hey well today I did find that infact the line voltage (240v here) runs straight through the remote, however, the element is heated from the switch on the back so no high current. The pump the remote powers is 240v 16w.

For this, you will want to use something like a small solid state relay, as well as a transistor to drive it with the Netduino.

Would something like this work?

http://uk.farnell.co...ross_price=true

Completely off topic, but the song "supermassive black hole" is now running through my head.

Haha yeah very good song

Anyway I decided that maybe this was a bit above my head. I can code in C# but very basic C so decided to opt for using a small atom computer to handle voice and just use the netduino as an interface.