I've been asked if I could make something for a local church and their exhibition or something of the sorts - didn't really get much info what it is for at the church, but it's temporary anyway so I'll just leave my Arduino in the enclosure for the time needed. The project requires a 60W Incandescent light bulb to switch on and off at 30second intervals. I've been doing the searches and have found a wonderful post http://www.glacialwanderer.com/hobbyrobotics/?p=9 where the poster does exactly what I want circuit wise, only his is applicable to 120VAC.
The reason I ask is cause I want to make sure it works since it is high voltages.
For my application, I think a electro-mechanical relay will work perfectly fine (30s switching shouldn't be to straining....I think). I found this relay: http://za.rs-online.com/web/p/electromechanical-relays/6168708/
As for the circuit, I pretty much use the one in the blog post over at glacialwanderer.
Am I correct with my deductions for my application, specifically the use of the electro-mechanical relay?