Re: Controlling a relay via cellular phone.....
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Posted by on July 12, 2006, 6:23 pm
Please log in for more thread options Maybe he needs to reboot because the computer gets locked up, in which case he would need an "outside line". > EsDee wrote:
> >
2
> > Hello, > > > > Since a few weeks I am running a webcamserver . It is stationed 40 > > Kilometers away. I control it via an UltraVNC connection. However, about > > times a week I need to hard-reset the computer manually.
GSM
> > I am looking for some kind of construction to reset the computer via a > > cellular phone.
the
> > The only thing I need is a relay that I can switch by making a call to > > GSM phone. So, I need only 1 channel.
> > This relay could switch the reset-button. > > > > Can anyone help me out? > > > > Thanks in advance. > > > > Marcel >
> > Why not use the printer port and just issue the right command to pull > the reset line low with a DIP or reed relay? > > > -- > Service to my country? Been there, Done that, and I've got my DD214 to > prove it. > Member of DAV #85. > > Michael A. Terrell > Central Florida | |||||||||||||||||||||||||||||||||||||
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Posted by Michael A. Terrell on July 12, 2006, 8:44 pm
Please log in for more thread options tapwater@roomtemperature.deg wrote: >
> Maybe he needs to reboot because the computer gets locked up, in which case > he would need an "outside line". If it's locking up, the printer port makes even more sense. Output a pulse at a regular interval. If it stops, your controller resets the computer. A simple missing pulse detector and a little thought will show you how it works. Think of it as an external watchdog timer. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida | |||||||||||||||||||||||||||||||||||||
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Posted by on July 12, 2006, 9:28 pm
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Thank you. You are correct, I think. I didn't catch on to the use you had in mind. > tapwater@roomtemperature.deg wrote:
> >
case
> > Maybe he needs to reboot because the computer gets locked up, in which > > he would need an "outside line".
>
> > If it's locking up, the printer port makes even more sense. Output a > pulse at a regular interval. If it stops, your controller resets the > computer. A simple missing pulse detector and a little thought will > show you how it works. Think of it as an external watchdog timer. > > > -- > Service to my country? Been there, Done that, and I've got my DD214 to > prove it. > Member of DAV #85. > > Michael A. Terrell > Central Florida | |||||||||||||||||||||||||||||||||||||
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Posted by Spehro Pefhany on July 12, 2006, 10:30 pm
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On Thu, 13 Jul 2006 00:44:51 GMT, the renowned "Michael A. Terrell" >tapwater@roomtemperature.deg wrote:
>>
>> Maybe he needs to reboot because the computer gets locked up, in which case >> he would need an "outside line". >
> > If it's locking up, the printer port makes even more sense. Output a >pulse at a regular interval. If it stops, your controller resets the >computer. A simple missing pulse detector and a little thought will >show you how it works. Think of it as an external watchdog timer. You can buy cards that implement the WDT function for PCs. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com | |||||||||||||||||||||||||||||||||||||
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Posted by on July 12, 2006, 10:35 pm
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Buy? Wait, I have to turn the crank on my home-made electrical generator. There, that will hold it for a few minutes. What means this word "buy"? Thank you for the information, and if I ever get some money I will learn to buy stuff. > On Thu, 13 Jul 2006 00:44:51 GMT, the renowned "Michael A. Terrell"
> > >tapwater@roomtemperature.deg wrote:
> >>
case
> >> Maybe he needs to reboot because the computer gets locked up, in which > >> he would need an "outside line".
> >
> > > > If it's locking up, the printer port makes even more sense. Output a > >pulse at a regular interval. If it stops, your controller resets the > >computer. A simple missing pulse detector and a little thought will > >show you how it works. Think of it as an external watchdog timer. >
http://www.trexon.com
> You can buy cards that implement the WDT function for PCs. > > > > Best regards, > Spehro Pefhany > -- > "it's the network..." "The Journey is the reward" > speff@interlog.com Info for manufacturers: > Embedded software/hardware/analog Info for designers:
http://www.speff.com
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