I want to control lava lamps using Arduino. I think it shouldn't be hard project, but I have no experience with hardware projects so I'm not sure witch design will feet best for me.
I consider using S202T01 Series Solid State Relays (I already have two of them). I think it's the easiest way to do it (Am I right?, Are my SSR good for that?). Probably I could use LED blinking example and use SSR instead of LEDs. I think there are some other advantages of this approach. It's safety because of optoisolation, and it can switch very fast. Unfortunately SSR are quiet expensive and I need control ten devices.
I'm looking for cheaper solution (but not much harder to use, and also safety). Me by I should use TRIACs (if yes what models)?
And one more question: how about cooling? Should I use radiator on Solid State Relays or TRIACs?