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Cutting power by software - what device do i need?
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Robert Hyatt



Joined: 27 Feb 2006
Posts: 15819
Location: Birmingham, AL
PostPost subject: Re: Cutting power by software - what device do i need?    Posted: Tue Mar 20, 2012 4:45 am Reply to topic Reply with quote
diep wrote:
Adam Hair wrote:
Is it possible to control an individual usb port? If so, then you could use a usb controlled power strip. It monitors the 5 volt usb output and shuts down when the voltage ceases.

If not, then you might have to do what Bob suggested. Get a usb relay, and use that to control the power to an intermediate receptacle outlet which you plug the switch into. I found one here that is not too expensive:
http://www.pencomdesign.com/1ch_usb_relay.htm


I'm not such a fan of USB. Actually the motherboards have a com port, RS232, so maybe i can use some old fashioned thing there.

Same principle applies then i suppose.

Usually in bios i turn off usb entirely - too easy to hack machines that have usb enabled.

Now i want to control of course the fans of the switch, the next thing to also monitor is the fans i intend to build to blow air in and out of the room, though i have some months for that to go when it gets a tad hotter and it has to lose the cluster heat to outside - that will be a lot easier to control though and probably no relays needed as just have to shutdown the machines then.

p.s. the relays you advice seems a windoze only relay - not gonna work at linux here Smile


I have seen RS232 to USB and such scattered around over the years, although it might be less common today...
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Subject Author Date/Time
Cutting power by software - what device do i need? Vincent Diepeveen Mon Mar 19, 2012 8:54 am
      Re: Cutting power by software - what device do i need? Robert Hyatt Mon Mar 19, 2012 4:46 pm
            Re: Cutting power by software - what device do i need? Vincent Diepeveen Mon Mar 19, 2012 6:06 pm
                  Re: Cutting power by software - what device do i need? J. Wesley Cleveland Mon Mar 19, 2012 6:19 pm
                        Re: Cutting power by software - what device do i need? Vincent Diepeveen Mon Mar 19, 2012 8:05 pm
                              Re: Cutting power by software - what device do i need? Robert Hyatt Mon Mar 19, 2012 11:36 pm
                  Re: Cutting power by software - what device do i need? Ben-Hur Carlos Langoni Mon Mar 19, 2012 8:54 pm
                        Re: Cutting power by software - what device do i need? Vincent Diepeveen Mon Mar 19, 2012 9:27 pm
                              Re: Cutting power by software - what device do i need? Ronald de Man Mon Mar 19, 2012 10:27 pm
                                    Re: Cutting power by software - what device do i need? Vincent Diepeveen Mon Mar 19, 2012 11:15 pm
                                    Re: Cutting power by software - what device do i need? Robert Hyatt Mon Mar 19, 2012 11:37 pm
                  Re: Cutting power by software - what device do i need? Robert Hyatt Mon Mar 19, 2012 11:27 pm
                        Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 12:00 am
                              Re: Cutting power by software - what device do i need? Robert Hyatt Tue Mar 20, 2012 12:22 am
                                    Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 12:40 am
                                          Re: Cutting power by software - what device do i need? Robert Hyatt Tue Mar 20, 2012 1:15 am
                                                Re: Cutting power by software - what device do i need? Adam Hair Tue Mar 20, 2012 2:05 am
                                                      Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 2:39 am
                                                Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 2:40 am
                                          Re: Cutting power by software - what device do i need? Adam Hair Tue Mar 20, 2012 2:22 am
                                                Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 2:48 am
                                                      Re: Cutting power by software - what device do i need? Robert Hyatt Tue Mar 20, 2012 4:45 am
                                                            Re: Cutting power by software - what device do i need? Vincent Diepeveen Tue Mar 20, 2012 12:31 pm
                                    Re: Cutting power by software - what device do i need? Ben-Hur Carlos Langoni Tue Mar 20, 2012 2:49 pm
                                          Re: Cutting power by software - what device do i need? Vincent Diepeveen Wed Mar 21, 2012 12:17 pm
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