Re: Auto shutdown/restart software for FreeBSD?
On Tue, 15 May 2007 00:16:34 -0500 WizLayer [EMAIL PROTECTED] wrote: On Monday 14 May 2007 08:27:48 pm you wrote: On May 13, 2007, at 7:13 PM, WizLayer wrote: On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. Indeed. UPSes are designed to start recharging their (usually 12V sealed lead-acid) batteries at around the 5-hour rate, which might be say 2.4A for a 12Ah battery, for a say 300VA UPS, tapering that off as voltage rises. Using (just) the UPS to recharge a say 100Ah vehicle battery at that rate would take maybe 2 days, assuming the UPS didn't overheat and perhaps blow up trying. However a simple (regulated) charger on the external battery is fine, though possibly thoroughly confusing the UPS' brains about how long recharge should take, available capacity and such. For adding external batteries, simple 'dumb' UPSes are usually better than 'smarter' ones. [..] This is another approach that seems like it would be practical: Use deep cycle car batteries, trickle charge with solar panels. Sure, you can do that, assuming it's sunny during/after a power outage. Here at least, outages mostly tend to correlate with stormy weather. If a desktop computer can run on square wave generated by dc/ac converter, use that as a power backup system, It would have to have some kind of switching system to detect main power drop and switch to the backup system. That's pretty much what a UPS is doing, though they usually provide a 'modified square wave' that somewhat more closely approximates a sine wave output. Note however that a UPS has to switch cleanly from mains to battery power supplying the last stage inverter within just a few milliseconds, ie a small fraction of a single mains 50 or 60Hz cycle. Perhaps someone would be willing to, with engineering expertise put together servers that would work on laptop batteries, like a laptop. I do have one machine that has Yellow Dog linux (Mac Powerbook 3400c) that runs 24/7 as my backup DNS server. JK Laptops as servers is sure the way to go on solar-powered houses; hard to find or make a better UPS than a laptop p/s. For desktop boxes, there are available computer power supplies that run straight off 12V. I hunted for a mob called DC-PC, but they may be defunct. eg check: http://www.powerstream.com/mini-itx.htm http://www.mini-box.com/s.nl/sc.8/category.13/.f Why settle for a square wave? It's not hard to clean that up, and besides... Very much easier said than done :) and besides .. Wouldn't that bring mayhem and havoc on a scanner (ie, I'm pretty sure that you your screen would do very unhappy things)? LCD screen? don't know. (or a system's power supply over long term? hmmm) Devices that aren't happy with non-sinewave power include such as laser printers, but those you mention here use switching supplies themselves, and are usually happy enough running on square-wave inverters, as long as the inverter can handle the peak startup currents often demanded. Computer power supplies aren't fazed by square wave (or for that matter, high voltage DC) input, as they're chopping the input waveform anyway. Also, you probably don't want printers and such running off the UPS. As far as the type of batteries, deep cycle marine batteries, whatever. It doesn't really matter except to say that some types can be fully discharged and some would be ruined on a full discharge. The health and monitoring portion of the UPS would have to be designed with those limits in mind (and, hey... That could be part of the embedded mprocessors job, too... more options). Well that's just what any decent UPS does. While I wouldn't want to discourage anyone from learning embedded design and programming, it's terrific fun, but you can expect to spend hundreds of hours and not a little cash doing so by trial and error, to save on a what, $200 UPS? Switching power from one source to another is something that I've not had a lot of luck with, esp with sensitive stuff like a computer's power supply (touchy). On the other hand clean, dc power in a parallel circuit is as simple as it gets. Edison had a good idea after all. Look at the battery as your constant source, and work away from that. Your secondary source merely compliments the battery. So long as you use regulators for your other sources, it will stay Clean by default. :) As far as switching power sources from regular charger to something like solar panels, same concept... Don't switch from-to anything. Keep it constantly hooked up in parallel with the battery. For best efficiency, most UPSes use the mains as long as it's available, even in a degraded state such as under- or over-voltage, using 'boost' and 'buck' windings/circuits
Re: Auto shutdown/restart software for FreeBSD?
Ok great I will try that too. On 5/15/07, NetOpsCenter [EMAIL PROTECTED] wrote: Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. Aloha Aftab, This was the first thing I tested. I unplugged the unit and let it run on battery all day while I was in town. Then I plugged in the UPS and its internal charger did its thing until the next day and I tested the current with a big amp meter I got from an auto sourse store and it was fully charged in less than 24 hrs. It was not fully discharged by the way even when the battery ran the 2 servers for the 9 hours. Al Hey welcome to visit Dhaka. Regards- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh +880152635208 -http://www.DhakaStockExchangeGame.com Spyware detector -http://www.google.com/search?q=kayoty On 5/13/07, NetOpsCenter [EMAIL PROTECTED] wrote: jekillen wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Jeff K. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] Aloha Jekillen, I had a similar problem here in Hawaii with our 2 noc servers. I replaced the small UPS battery with a 100 amp stationery battery out side the box. It now will run for about 10 hours if we have a power outage for that long. ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol -- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh http://www.DhakaStockExchangeGame.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
Thats all comes down to switching IC with bigger AMPERE or darlington circuit. Anyway I dunno any circuit publicly available to make one UPS using microcontroller. If u anyone has one, kindly post it here. We definitely do not want to get ripped off by the UPS makers!!! On 5/15/07, WizLayer [EMAIL PROTECTED] wrote: On Monday 14 May 2007 08:27:48 pm you wrote: On May 13, 2007, at 7:13 PM, WizLayer wrote: On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. What's wrong with that? Trickle-charge the battery and ride the computers from the battery at the same time... That's an uninterrupted power supply. A voltage regulator, converter, and a few filters will give you a clean, constant supply. It will last longer, and it's a lot cheaper in comparison. Actually, this is a project of mine that's been on the back burner for years now. I'd like to add a network interface for remote controls, some health checking, and test modes, but would have to incorporate an embedded processor (serial port and/or USB interfaces are just as possible). Being that I've never messed with such, any suggestions as far as a good processor to start with? It doesn't necessarily have to be a processor that will do the whole kit-n-kaboodle. Right now, I'm just looking for something I can learn the basics with. I know it's not a BSD-related question, but I figured I'd ask anyway. Thanks WizLayer This is another approach that seems like it would be practical: Use deep cycle car batteries, trickle charge with solar panels. If a desktop computer can run on square wave generated by dc/ac converter, use that as a power backup system, It would have to have some kind of switching system to detect main power drop and switch to the backup system. Perhaps someone would be willing to, with engineering expertise put together servers that would work on laptop batteries, like a laptop. I do have one machine that has Yellow Dog linux (Mac Powerbook 3400c) that runs 24/7 as my backup DNS server. JK Why settle for a square wave? It's not hard to clean that up, and besides... Wouldn't that bring mayhem and havoc on a scanner (ie, I'm pretty sure that you your screen would do very unhappy things)? LCD screen? don't know. (or a system's power supply over long term? hmmm) As far as the type of batteries, deep cycle marine batteries, whatever. It doesn't really matter except to say that some types can be fully discharged and some would be ruined on a full discharge. The health and monitoring portion of the UPS would have to be designed with those limits in mind (and, hey... That could be part of the embedded mprocessors job, too... more options). Switching power from one source to another is something that I've not had a lot of luck with, esp with sensitive stuff like a computer's power supply (touchy). On the other hand clean, dc power in a parallel circuit is as simple as it gets. Edison had a good idea after all. Look at the battery as your constant source, and work away from that. Your secondary source merely compliments the battery. So long as you use regulators for your other sources, it will stay Clean by default. :) As far as switching power sources from regular charger to something like solar panels, same concept... Don't switch from-to anything. Keep it constantly hooked up in parallel with the battery. Some simple logics could perform circuits acts for the solar panels (if sun is good and elec_co's bad , then close... however you want to hack it.) Same for dis/associating the charger. I just need someone to point me in the right direction as far as embedded mprocessors. I've googled it, and found a few hobby kits, but I'd rather hear it from someone who deals with stuff like this and can suggest a start here. I hate jumping into something only to have to unlearn in order to learn it right. WizLayer PS When I finally get this finished, I'm going to find some way of modifying the BSD license to apply it and release the whole thing to the public. One would only have to buy the parts, program, and assemble the thing... Why? Because UPS prices are a rip-off and some jerk told me I couldn't. :) -- Life is better with a BSD. For more info, www.bsd.org. -- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh http://www.DhakaStockExchangeGame.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
On May 13, 2007, at 7:13 PM, WizLayer wrote: On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. What's wrong with that? Trickle-charge the battery and ride the computers from the battery at the same time... That's an uninterrupted power supply. A voltage regulator, converter, and a few filters will give you a clean, constant supply. It will last longer, and it's a lot cheaper in comparison. Actually, this is a project of mine that's been on the back burner for years now. I'd like to add a network interface for remote controls, some health checking, and test modes, but would have to incorporate an embedded processor (serial port and/or USB interfaces are just as possible). Being that I've never messed with such, any suggestions as far as a good processor to start with? It doesn't necessarily have to be a processor that will do the whole kit-n-kaboodle. Right now, I'm just looking for something I can learn the basics with. I know it's not a BSD-related question, but I figured I'd ask anyway. Thanks WizLayer This is another approach that seems like it would be practical: Use deep cycle car batteries, trickle charge with solar panels. If a desktop computer can run on square wave generated by dc/ac converter, use that as a power backup system, It would have to have some kind of switching system to detect main power drop and switch to the backup system. Perhaps someone would be willing to, with engineering expertise put together servers that would work on laptop batteries, like a laptop. I do have one machine that has Yellow Dog linux (Mac Powerbook 3400c) that runs 24/7 as my backup DNS server. JK ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. Aloha Aftab, This was the first thing I tested. I unplugged the unit and let it run on battery all day while I was in town. Then I plugged in the UPS and its internal charger did its thing until the next day and I tested the current with a big amp meter I got from an auto sourse store and it was fully charged in less than 24 hrs. It was not fully discharged by the way even when the battery ran the 2 servers for the 9 hours. Al Hey welcome to visit Dhaka. Regards- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh +880152635208 -http://www.DhakaStockExchangeGame.com Spyware detector -http://www.google.com/search?q=kayoty On 5/13/07, NetOpsCenter [EMAIL PROTECTED] wrote: jekillen wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Jeff K. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] Aloha Jekillen, I had a similar problem here in Hawaii with our 2 noc servers. I replaced the small UPS battery with a 100 amp stationery battery out side the box. It now will run for about 10 hours if we have a power outage for that long. ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
On Monday 14 May 2007 08:27:48 pm you wrote: On May 13, 2007, at 7:13 PM, WizLayer wrote: On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. What's wrong with that? Trickle-charge the battery and ride the computers from the battery at the same time... That's an uninterrupted power supply. A voltage regulator, converter, and a few filters will give you a clean, constant supply. It will last longer, and it's a lot cheaper in comparison. Actually, this is a project of mine that's been on the back burner for years now. I'd like to add a network interface for remote controls, some health checking, and test modes, but would have to incorporate an embedded processor (serial port and/or USB interfaces are just as possible). Being that I've never messed with such, any suggestions as far as a good processor to start with? It doesn't necessarily have to be a processor that will do the whole kit-n-kaboodle. Right now, I'm just looking for something I can learn the basics with. I know it's not a BSD-related question, but I figured I'd ask anyway. Thanks WizLayer This is another approach that seems like it would be practical: Use deep cycle car batteries, trickle charge with solar panels. If a desktop computer can run on square wave generated by dc/ac converter, use that as a power backup system, It would have to have some kind of switching system to detect main power drop and switch to the backup system. Perhaps someone would be willing to, with engineering expertise put together servers that would work on laptop batteries, like a laptop. I do have one machine that has Yellow Dog linux (Mac Powerbook 3400c) that runs 24/7 as my backup DNS server. JK Why settle for a square wave? It's not hard to clean that up, and besides... Wouldn't that bring mayhem and havoc on a scanner (ie, I'm pretty sure that you your screen would do very unhappy things)? LCD screen? don't know. (or a system's power supply over long term? hmmm) As far as the type of batteries, deep cycle marine batteries, whatever. It doesn't really matter except to say that some types can be fully discharged and some would be ruined on a full discharge. The health and monitoring portion of the UPS would have to be designed with those limits in mind (and, hey... That could be part of the embedded mprocessors job, too... more options). Switching power from one source to another is something that I've not had a lot of luck with, esp with sensitive stuff like a computer's power supply (touchy). On the other hand clean, dc power in a parallel circuit is as simple as it gets. Edison had a good idea after all. Look at the battery as your constant source, and work away from that. Your secondary source merely compliments the battery. So long as you use regulators for your other sources, it will stay Clean by default. :) As far as switching power sources from regular charger to something like solar panels, same concept... Don't switch from-to anything. Keep it constantly hooked up in parallel with the battery. Some simple logics could perform circuits acts for the solar panels (if sun is good and elec_co's bad , then close... however you want to hack it.) Same for dis/associating the charger. I just need someone to point me in the right direction as far as embedded mprocessors. I've googled it, and found a few hobby kits, but I'd rather hear it from someone who deals with stuff like this and can suggest a start here. I hate jumping into something only to have to unlearn in order to learn it right. WizLayer PS When I finally get this finished, I'm going to find some way of modifying the BSD license to apply it and release the whole thing to the public. One would only have to buy the parts, program, and assemble the thing... Why? Because UPS prices are a rip-off and some jerk told me I couldn't. :) -- Life is better with a BSD. For more info, www.bsd.org. pgpyjmF4nRC5O.pgp Description: PGP signature
Re: Auto shutdown/restart software for FreeBSD?
On 12/05/07, jekillen [EMAIL PROTECTED] wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Sounds like quite the varied selection of hardware. I am sure there are people here with experience in this area, but as a starter, look at: http://www.freebsd.org/cgi/ports.cgi?query=upsstype=allsektion=sysutils and perhaps: http://www.networkupstools.org/ -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Auto shutdown/restart software for FreeBSD?
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, 13 May 2007 5:19 PM To: jekillen Cc: FreeBSD Mailing List Subject: Re: Auto shutdown/restart software for FreeBSD? On 12/05/07, jekillen [EMAIL PROTECTED] wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Sounds like quite the varied selection of hardware. I am sure there are people here with experience in this area, but as a starter, look at: http://www.freebsd.org/cgi/ports.cgi?query=upsstype=allsekti on=sysutils and perhaps: http://www.networkupstools.org/ -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] Network UPS tools in the ports tree can do this... cd /usr/ports make search key=network ups will find the main port and the optional addons. mjt --- The information transmitted in this e-mail is for the exclusive use of the intended addressee and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of it, or the taking of any action in reliance upon this information by persons and/or entities other than the intended recipient is prohibited. If you received this in error, please inform the sender and/or addressee immediately and delete the material. E-mails may not be secure, may contain computer viruses and may be corrupted in transmission. Please carefully check this e-mail (and any attachment) accordingly. No warranties are given and no liability is accepted for any loss or damage caused by such matters. --- ### This e-mail message has been scanned for Viruses by Bytecraft ### ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. Hey welcome to visit Dhaka. Regards- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh +880152635208 -http://www.DhakaStockExchangeGame.com Spyware detector -http://www.google.com/search?q=kayoty On 5/13/07, NetOpsCenter [EMAIL PROTECTED] wrote: jekillen wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Jeff K. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] Aloha Jekillen, I had a similar problem here in Hawaii with our 2 noc servers. I replaced the small UPS battery with a 100 amp stationery battery out side the box. It now will run for about 10 hours if we have a power outage for that long. ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- Aftab Jahan Subedar CEO/Software Engineer Subedar Technologies Ltd Soubedar Baag Bibir Bagicha #1 North Jatra Bari Dhaka 1204 Bangladesh http://www.DhakaStockExchangeGame.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
On Sunday 13 May 2007 07:17:14 pm Aftab Jahan Subedar wrote: Would it recharge the battery fully after discharge? I dont think so. So you got to recharge the external battery EXTERNALLY after power failure. What's wrong with that? Trickle-charge the battery and ride the computers from the battery at the same time... That's an uninterrupted power supply. A voltage regulator, converter, and a few filters will give you a clean, constant supply. It will last longer, and it's a lot cheaper in comparison. Actually, this is a project of mine that's been on the back burner for years now. I'd like to add a network interface for remote controls, some health checking, and test modes, but would have to incorporate an embedded processor (serial port and/or USB interfaces are just as possible). Being that I've never messed with such, any suggestions as far as a good processor to start with? It doesn't necessarily have to be a processor that will do the whole kit-n-kaboodle. Right now, I'm just looking for something I can learn the basics with. I know it's not a BSD-related question, but I figured I'd ask anyway. Thanks WizLayer -- Life is better with a BSD. For more info, www.bsd.org. pgpPpQaL1GQvi.pgp Description: PGP signature
Auto shutdown/restart software for FreeBSD?
Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Jeff K. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Auto shutdown/restart software for FreeBSD?
jekillen wrote: Hello again; Is there software for ups auto shutdown and restart for use with a ups system that has the capacity; I.E. a serial connection and references in the manual to software (for Windows mostly) download? Currently I have a Vesta Pro 600 unit. I had one made by Minuteman that crapped out on me last night. It had been doing ok and was a replacement for one made by Tripp Lite, which also failed permanently. I am running one desk top FreeBSD system, headless but with high speed SCSI drives in addition to the boot drive. I am away during the week for at least 8 - 9 hours during the week and cant be there if the power goes down to shut the system down before the ups exhausts its battery. Thanks in advance for any suggestions. Jeff K. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] Aloha Jekillen, I had a similar problem here in Hawaii with our 2 noc servers. I replaced the small UPS battery with a 100 amp stationery battery out side the box. It now will run for about 10 hours if we have a power outage for that long. ~Al Plant - Honolulu, Hawaii - Phone: 808-284-2740 + http://hawaiidakine.com + http://freebsdinfo.org + [EMAIL PROTECTED] + + http://internetohana.org - Supporting - FreeBSD 6.* - 7.* + All that's really worth doing is what we do for others.- Lewis Carrol ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
