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Voltage & Amp Meter

Discussion in 'Computers, Cabling & Other Miscellaneous Hardware' started by Noel Richards, Aug 12, 2019.

  1. Noel Richards

    Noel Richards Apprentice Elf

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    Just wandering if anyone can tell me how this gets wired I know the black and red is power but wandering about the 3 wire I think would be data power and neutral but which is which. Will not load picture so colours are Blue Green and Yellow.
     
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  2. Dave_Szoka

    Dave_Szoka Full Time Elf Generous Elf

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    We kinda need to see what you are wanting to wire so we can help

    Sorry
     
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  3. AAH

    AAH I love blinky lights :) Community Project Designer

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    Definitely need a link and/or a photo.
    Voltmeters are easy as they are typically just the plus and minus. Current meters are more complicated. Some have a built in resistor shunt and some are designed for an external shunt. The external shunt ones will typically have light wires from the meter as they are actually measuring voltage across the shunt. The internal shunt versions will have heavy wires to handle the 5A/10A or whatever or alternately solder pads for mounting heavy wires direct to the pcb.
     
  4. OP
    OP
    Noel Richards

    Noel Richards Apprentice Elf

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    Trying to up load but keeps coming back saying can't do it will try and down size the res.
     
  5. OP
    OP
    Noel Richards

    Noel Richards Apprentice Elf

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    DSCN0737.JPG

    Finally by down grading the res to VGA.
     
  6. AAH

    AAH I love blinky lights :) Community Project Designer

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    [​IMG]
    That's from an Aliepress page i found by searchingon google with "voltage current shunt connection"
     
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  7. battle79

    battle79 Full Time Elf Generous Elf

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    Looks the same as how I wired mine up. Work a treat.
    Good luck with it.
     
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  8. OP
    OP
    Noel Richards

    Noel Richards Apprentice Elf

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    Thankyou very much.
     
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