I really appreciate it.
Thanks guyfrom7up and Goodhart,
I think parallel port will do this.
Do you think if I connect wires those are in the usb cable
to that simple circuit (picture above) and turn on/off usb port
It will work?
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you can just use a parallel port
Google interfacing parallel port
Have one of the outputs drive a transistor (use an optocouple for more protection) which in turn drives a relay (use a protection diode!)
Do any of the circuits on this Black Box link help?
Thanks, But they weren't useful to me.
My biggest problem is I can't buy these circuits from net
I can't buy anything else because of post problems in here.
But I think it's a very simple circuit that everybody can make in home
but I don't know ho :(
Some of the things listed in the link are Schematics, nevertheless, interfacing with your USB is probably the way to go, and that can be touchy to say the least.