From: J. L. <vwy...@gm...> - 2010-08-23 17:55:45
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WOW I am shocked I got it in one of better ways of doing it. I knew about the having to watch each cell part thats why I figured would be best to display all cell on the battery and a total voltage and a lowest voltage. Prob a tad overkill but I am a paranoid type. Now to just get my arduinos working with the overo. On Mon, Aug 23, 2010 at 10:47 AM, Robert Vogt IV <ro...@io...> wrote: > Hi JL, > > That is probably one of the best ways to get voltage. Anyhow, you > want to know if they are becoming unbalanced as otherwise you're going > to have problems... You need to monitor the voltage of the lowest to > determine when to shut off, as otherwise you will under-voltage it and > cause damage. > > > Robert Vogt IV > CEO > IOSiX, LLC > 2375 Parkwood Ave > Ypsilanti, MI 48198 > ro...@io... > P: 734-730-9690 > F: 734-482-2337 > > > > On Mon, Aug 23, 2010 at 1:43 PM, J. L. <vwy...@gm...> wrote: >> Looks like a good chip but only does 1 cell lipo's I need to monitor 3 >> and 6 cell lipos. I came up with a way with an arduino to individually >> measure the voltage from the balance port on the battery since each is >> always below 5v and then I have the program add them together to get a >> ball park total on the battery as well as seeing each individual cells >> voltage. While it may not be the most accurate it works for now for me >> >> On Mon, Aug 23, 2010 at 10:14 AM, John Alfredo <jal...@sp...> wrote: >>> Check out the DS2745 battery monitor from Dallas Semiconductor >>> >>> http://www.maxim-ic.com/datasheet/index.mvp/id/4994 >>> >>> It connects via i2c and provides voltage, current, and temperature. >>> >>> Regards >>> >>> On Fri, 2010-08-20 at 21:23 -0700, vwyodapink wrote: >>>> Thanks again Alex I was able to get it working from an arduino and will be >>>> interfacing it by means of i2c to my overo. >>>> >>>> Probably not the best way but seemed and worked out to be the easiest way >>>> for me >>>> >>>> >>>> >>>> Alex Gibson-3 wrote: >>>> > >>>> >> Alex would you mind posting any information about how you made the LVC >>>> >> you use in your project? I have been wondering about those as well and >>>> >> like that yours has to be manually reset. If its a hassle no worries. >>>> >> >>>> >> Using the ADC on the summit seems difficult from what I read. But does >>>> >> sound like the cleanest solution. These are the times I wish I was an >>>> >> electrical engineer so I actually knew what I needed and how to make >>>> >> it :P >>>> >> >>>> >> And again I appreciate the examples and help >>>> >> >>>> > >>>> > The circuit I'm using isn't going to be much use for you as I'm using >>>> > sealed lead acid batteries(gel cells) 6V 12Ah/24Ah . >>>> > >>>> > Some of the newer regulators (switch mode) have low voltage cut outs >>>> > builtin. >>>> > >>>> > See >>>> > Low-battery voltage cutoff consumes just 1 mA >>>> > http://www.edn.com/archives/1998/091198/19di.htm >>>> > http://www.edn.com/archives/1998/091198/pdfs/17d22531.pdf >>>> > >>>> > Just pick the version of the MN1380 that gives the voltage level you want. >>>> > solarbotics sells them(in the US) as does small parts and bearings in >>>> > Australia >>>> > http://www.solarbotics.com/products/1381/ >>>> > >>>> > For another >>>> > similar circuit to the bottom circuit on this page >>>> > except using it to control the output(power) via a solid state relay. >>>> > http://www.siliconchip.com.au/cms/A_104378/article.html >>>> > >>>> > Alex >>>> > >>>> > >>>> > >>>> > ------------------------------------------------------------------------------ >>>> > This SF.net email is sponsored by >>>> > >>>> > Make an app they can't live without >>>> > Enter the BlackBerry Developer Challenge >>>> > http://p.sf.net/sfu/RIM-dev2dev >>>> > _______________________________________________ >>>> > gumstix-users mailing list >>>> > gum...@li... >>>> > https://lists.sourceforge.net/lists/listinfo/gumstix-users >>>> > >>>> > >>>> >>>> >>>> ----- >>>> Just a beginner trying to learn his way around. >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Sell apps to millions through the Intel(R) Atom(Tm) Developer Program >>> Be part of this innovative community and reach millions of netbook users >>> worldwide. Take advantage of special opportunities to increase revenue and >>> speed time-to-market. Join now, and jumpstart your future. >>> http://p.sf.net/sfu/intel-atom-d2d >>> _______________________________________________ >>> gumstix-users mailing list >>> gum...@li... >>> https://lists.sourceforge.net/lists/listinfo/gumstix-users >>> >> >> ------------------------------------------------------------------------------ >> Sell apps to millions through the Intel(R) Atom(Tm) Developer Program >> Be part of this innovative community and reach millions of netbook users >> worldwide. Take advantage of special opportunities to increase revenue and >> speed time-to-market. Join now, and jumpstart your future. >> http://p.sf.net/sfu/intel-atom-d2d >> _______________________________________________ >> gumstix-users mailing list >> gum...@li... >> https://lists.sourceforge.net/lists/listinfo/gumstix-users >> > > ------------------------------------------------------------------------------ > Sell apps to millions through the Intel(R) Atom(Tm) Developer Program > Be part of this innovative community and reach millions of netbook users > worldwide. Take advantage of special opportunities to increase revenue and > speed time-to-market. Join now, and jumpstart your future. > http://p.sf.net/sfu/intel-atom-d2d > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |