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Thread: volt meter

  1. #1
    Low Bitrate
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    Post volt meter

    What I want to do is somehow connect an accurate volt meter either via usb, serial, etc and monitor the battery voltage.

    I know there are real volt meters and autotap can measure volts only when the car is on (ign).

    Anyone know if there is a volt meter to be used with a PC? I'm sure there has to be one somewhere or a way to make one.

  2. #2
    Newbie
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    Jan 2001
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    San Francisco, CA, USA
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    Post

    Ok, I think I know what you are looking for since I have been looking for the same thing. I just haven't wanted to bite the bullet just yet. Check out Data Acquistion Boards
    They will have what you are looking for there. A little pricy but you could do a lot more with it. They do have USB versions as well. Good Luck. And if you find anything better, please let me know.

  3. #3
    Variable Bitrate
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    Mar 2001
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    Any recommendations on inexpensive ones that have their own LCD? i.e. don't hookup to the computer?
    Player: Celeron II 633MHz, 256MB RAM, 20GB IBM 9mm 2.5" Laptop HD (180G/2ms), onboard ethernet/sound/video/tvout, 10"11"x3" case, MPBS1 70W DC-DC PS w/auto-shutdown controller, in-dash lighted switches, 7" NTSC TFT widescreen in-dash LCD, touchscreen, rear-window brake light installed Garmin GPS35 GPS, credit card sized IR remote w/IRMan, mini-wireless keyboard/mouse (sits under seat), PowerMate black knob, MP3s and GPS Navigation (Winamp, CoPilot, SA8.0).
    Car: 1993 Nissan Maxima, Black Emerald

  4. #4
    Low Bitrate
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    I have a handheld voltmeter...bought it at a local car parts store. The thing with that one is it's not very accurate.

    I've been searching all morning for something. Came across a basic stamp rs-232 volt meter software...but I'm not too familiar with that yet. By the looks of it, it should work...

    I looked at iotech and I'm sure those would work, but for the price, I would need other uses for it as well.

    I'm gonna keep looking around.

  5. #5
    Maximum Bitrate gizmomkr's Avatar
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    Smyrna, Ga, USA
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    a couple of ideas on this -

    1 a basic meter w/ digital display - In the US, Target & Walmart both sell a digital display that has a cig-lighter plug on it, all it does is shov voltage of whatever you plug it into. it goes for about 15.00

    Radioshack also sells these, in a kit or module form, for about the same price. I think they call it a digital voltage display module.... it would look nicer than the target one, especially if you were coing to custom case it. I can dig up a link to radioshack.com if someone wants it.

    as for the pc side - I have been working on the basic stamp for about 6 months. I love these things, they have so manny possibilities. annyhow..... the volt meter module would work great, all you need is the module ( actually just an adc ) and the stamp, together they should cost about 50 - 70 bucks. depends on what stamp you get. the stamps are fun to play mith though, the larger one was like 7 1/0 lines anda serial interface ( plug into pc) and its pretty easy to write software to talk to the stamp, you could hook up all kinds of stuff between the stamp and pc, and use it to roll up windows, allarm, lock doors... tempature control. ok, Im rambeling. but that would work, and the software for the voltage meter is allready written, and freely availbel.

    the last option would be - go to radioshack, or radioshack.com they sell a DVM that is pretty nice , that has an rs-232 interface on it, and comes with the software, it can read & report to the pc volts, amps, resistance ...etc. I have one, I can look at the model number if annyone wants to know. it cost me about 60 - 70 USD I think.
    Gizmo-
    Techonlogy on Wheels
    http://www.hjnetworks.com/car

  6. #6
    Maximum Bitrate
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    I know my Asus motherboard can tell you all that. It tells you all the precise voltages, fan speed, and temp in the software.
    http://www.mp3car.com/usersites/Maveric/ M.A.V.I.C. System
    Asus MB, PII 266, 192 MB Ram, 6.8" LCD, 6 Disk CD-ROM, 21 Gig HD, All-in-Wonder Video w/ TV Tuner, Irman, Windows ME, Winamp, Cobra III -- All in a custom acrylic case.

    http://www.mp3car.com/usersites/listings/ MP3car Listings - Please add to it! :)

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