Date: Mon, 8 Sep 1997 22:56:50 -0700 (PDT) From: "Jamil J. Weatherbee" <jamil@counterintelligence.ml.org> To: jbryant@tfs.net Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: upsd? Message-ID: <Pine.BSF.3.96.970908225306.1655E-100000@counterintelligence.ml.org> In-Reply-To: <199709090527.AAA02326@argus.tfs.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Might want to look at linux powerd program --- I hacked this once for a ups you can just print out the serial line statuses and see what changed when it get disconnected etc. I took apart a ups the other day and was amazed to find that it used a 12 volt battery, kind of like a motor cycle battery, I was thinking of connecting it to 4 deep cycle marine batteries in parallel to increase the time it will keep the system up. I think the marine batteries are 110 Amp hour and the ups is like 12 Amp hours. giving me like 30X the rated time on the ups. On Tue, 9 Sep 1997, Jim Bryant wrote: > isn't there something like a "upsd" out there to handle automatic > powerdown upon serial port notification of a power failure? > > i just came across a working 540VA UPS this weekend for $25.00 [APC 520ES] > > i'm guessing it's a 540VA as the 120VAC outlets on the back say 4.5A > max, even though the model is the 520... > > it has a serial port [DB-9] on the back of it, and what looks like > discrete logic on the charger/inverter board, so i'm assuming it does > something like toggle the DSR/DTR, RTS/CTS, or maybe even the CD... > > any pointers to existing code would be great, as this came with no > dox... > > jim > -- > All opinions expressed are mine, if you | "I will not be pushed, stamped, > think otherwise, then go jump into turbid | briefed, debriefed, indexed, or > radioactive waters and yell WAHOO !!! | numbered!" - #1, "The Prisoner" > ------------------------------------------------------------------------------ > Inet: jbryant@tfs.net AX.25: kc5vdj@wv0t.#neks.ks.usa.noam grid: EM28PW > voice: KC5VDJ - 6 & 2 Meters AM/FM/SSB, 70cm FM. http://www.tfs.net/~jbryant > ------------------------------------------------------------------------------ > HF/6M/2M: IC-706-MkII, 2M: HTX-212, 2M: HTX-202, 70cm: HTX-404, Packet: KPC-3+ >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.96.970908225306.1655E-100000>