How?

[vko-online]

How do you connect room light bulb to rapsberry pi?

[bholota]

@vko-online:
It would be done with simple electronic part called relay it has hight voltage input and output, circuit is open (or closed - depends from type) when some small voltage is provided into control input.

[deepsyx]

Hey @vko-online. I'm using the following relays (http://img.dxcdn.com/productimages/sku_121354_2.jpg) for the high power elements. They're wired similar to this: https://static.bocoup.com/blog/relay-breadboard.png