Peter Harrison wrote:
>
> On Thu, Feb 4, 2010 at 1:57 PM, Claudio Izzi <
> <cizzi%40claudioizzi.com>> wrote:
> > Thanks for all the replies, I just thought since in the product
> > description it mentions its ideal for "solar applications" I told myself
> > they are referring to a standard 12VDC deep cycle battery thus reading
> > its voltage in the ADC.
>
> It's ideal primarily because it accepts a wide range of voltages, and
> thus does not require a separate power supply, or for the power to be
> regulated from the battery. I am using the TS-7260 with a solar
> powered autonomous boat. The power supply is a real help, although if
> you are running several devices off the USB you may brown out.
>
> > I'll look for a ready made solution, maybe a
> > device I can attach via the USB or serial port that will give me the
> > reading from the source.
>
> The TS-7260 has a very limited number of AD channels, so using it for
> voltage is probably a bad move. The approach I have used with success
> is the Phidget Interface, which connects via USB and provides 8 AD
> channels, 8 Digital Out, and 8 Digital In. A major advantage of using
> Phidgets is that they have a library and API for virtually every
> language, and thus are potentially "cross platform" in terms of being
> able to swap out the SBC without too much hassle. The libraries make
> interfacing easy, and they have ready to go sensors for things like
> voltage, current, temperature and many more. For non-electrical
> engineers who are mainly prototyping this solution is pretty good.
>
> Thats not to say that directly connecting to the TS-7260's IO lines
> isn't perfectly acceptable.
>
> Also, I have actually used the Phidgets on the TS-7260, so I know it
> works. I can help you get some precompiled binaries for the drivers if
> you wish, as I doubt you will be able to compile them on the stock
> TS-LINUX distro. I would strongly suggest moving to booting your
> TS-7260 off USB into Debian in order to get all the goodies :)
>
>
That was my first solution, to use the TS-7260 with the phidget
interface, I'm glad to hear they work well together. My concern would be
power efficiency, does the phidget interface + voltage sensor use up a
lot of watts? I mean, I'm trying to use existing specifications in terms
of PV array and battery size so I don't have to purchase additional
equipment. I like the 7260 because of its low power consumption.
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