Switch Computer on and off without Ethernet

G4nd41f

I do have a desktop computer, which does only have a Wifi connection to the internet over an external USB WiFi Stick. I would like to switch this computer on with my homey and shut it down properly before I cut the power.

The only solution I could think of so far, would be to open a 433 MHz switch for sockets and connect it to the power on contacts of the mainboard. Does anyone have a better idea?

MarcelKuijper

Fibaro binaire sensor, connected to your power switch, basicly the same with a smaller switch.

Als this works on 12v wich u can get from ur power supply.

DieterKoblenz

Perhaps it supports wake from USB? 

0burner0

In Bios there is a modus always on. I thought your device always boot when there is a power cut.
So a simple outlet wil work then.

G4nd41f

@0burner0
Thank you. This works perfectly. But how do I shut my computer down properly without just cutting the power?

RobinVanKekem

By the use of (remote) powershell:
http://www.computerperformance.co.uk/powershell/powershell_stop_computer.htm

Or remote command prompt:
https://technet.microsoft.com/en-us/library/cc770416(v=ws.11).aspx

DieterKoblenz

RobinVanKekem said:

By the use of (remote) powershell:
http://www.computerperformance.co.uk/powershell/powershell_stop_computer.htm

Or remote command prompt:
https://technet.microsoft.com/en-us/library/cc770416(v=ws.11).aspx

Give it proper time to shutdown before you kill the power

G4nd41f

But how do I let homey send the command?

RobinVanKekem

Someone would have to write an app for that: https://www.npmjs.com/package/node-powershell

tim1990

I tryed it with the ssh app and my imac. Would also really love it. Powering down more than starting up. (it had 20 gb ram and a 512gb ssd so it starts real Quick) 

Problem that i had is that osx doesn 't accept an insecure ssh connection

swttt

I have done something like this for fun through a webserver. Used php to execute a shell command. So when I did http://myip/status.php?cmd=shutdown it shuts down the pc. Guess this should work on osx as well, plus you could do some other stuff like checking hdd space left etc.

G4nd41f

I found a solution for shutting a computer down properly: http://www.airytec.com/en/switch-off/

You can use it in combination with the HTTP app of homey to shut down a computer.

kriebelkous

G4nd41f said:

I found a solution for shutting a computer down properly: http://www.airytec.com/en/switch-off/

You can use it in combination with the HTTP app of homey to shut down a computer.

If using this in a flow you might want to use some kind of ping command before cutting the power.

You dont want your system to be installing updates when you kill the power. A timer would seem to unreliable and you have no way of knowing for sure the shutdown command reached the pc.  

I am thinking of constructing something simular for 2 of my servers. Shutting them down of there is nothing on the network that is able to use the services they provide.

swttt

Isn't the terminal/shell command save enough? In other words it doesn't shutdown when it's installing updates? Similar in osx, which can't shutdown when terminal is busy.

kriebelkous

swttt said:

Isn't the terminal/shell command save enough? In other words it doesn't shutdown when it's installing updates? Similar in osx, which can't shutdown when terminal is busy.

Shutting down is'nt the problem. Its when to cut the power. An easy way would be to use a Fibaro wallplug that can sence the power usages (if powerusage is low then kill power). A cheaper way would be to use ping ans a 443mhz wallplug. (If no ping then kill power).

Or is the web interface able to send a message when power goes off?

swttt

Why would you want to kill the power after you have shutdown your pc? 

skandshus

Reviving this thread.. I alsa would LOBE an app to throw a shutdown command to.my.pc so it turns off.. then.i could create a virtual device so I could use it in a flow.. win win !