arduino dc motor projects

Does anybody knows where to find projects about high voltage dc motor controling with arduino? Intresting is that posible and if someone did that before. And also Is there a place where people put their completed projects that they could share with others?

"High voltage" is relative. For an Arduino, it starts about 5.5 volts

I mean voltage about 110V, 220V. Is arduino can do that, not directly of course. Saw on youtube how one guy did that, but he do not put link. So I wondering where i can find about it.

Using relays might be what you want.