VIN Power

Discussion in 'UDOO NEO' started by Gary Huband, Nov 14, 2016.

  1. Gary Huband

    Gary Huband New Member

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    The Udoo Neo doc pages in Power Management have:

    Power sources
    You can power up the board in 3 ways

    • DC-jack: internal positive, Voltage 6 to 15.
    • microUsb: 5 Volts up to 2 Ampere
    • Vin / GND pin on external pinout
    Where is Vin/GND on the external pins? What is the max voltage for Vin?
     
  2. Andrea Rovai

    Andrea Rovai Well-Known Member

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    The VIN / GND pin is on the internal row - there was an error in the documentation, I've just edited. If you just read from J7 to J5 pins you'll find the Vin pin between GND and A0.
    WARNING: if you power up the board via VIN do not power it up via the standard power supply at the same time.
     
  3. Gary Huband

    Gary Huband New Member

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    What is the max voltage for VIN? 3.3V? 5V?
     
  4. Andrea Rovai

    Andrea Rovai Well-Known Member

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  5. Gary Huband

    Gary Huband New Member

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    No power light. I'm using a programmable power supply set at 3.3V output with a max of 2A. It shows no current draw.
     
  6. Andrea Rovai

    Andrea Rovai Well-Known Member

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    I'm really, really sorry: I gave you the wrong answer. The correct answer is that the range goes from 5 to 12 V.
     
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  7. Gary Huband

    Gary Huband New Member

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    It doesn't boot at 5V but it does at 6V and above (I tested at 6V, 7V, and 12V). Thanks.
     
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  8. Andrea Rovai

    Andrea Rovai Well-Known Member

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    How have you powered it up? UDOO Neo boots at 5V via micro USB.
     
  9. Gary Huband

    Gary Huband New Member

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    Yes, I've powered it up using 6V, 7V, and 12V. It would not power up at 5V. I've been using 12V for a couple of days with no problems.
     
  10. Andrea Rovai

    Andrea Rovai Well-Known Member

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    Have you done it via micro USB?
     
  11. Gary Huband

    Gary Huband New Member

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    Yes, no problems.
     
  12. Andrea Rovai

    Andrea Rovai Well-Known Member

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    So if you power it up via the power jack at 5V it doesn't boot, does it?
    Another question: with "yes, no problems" you mean that you powered it up at 5V via micro USB, do you?

    EDIT: we've just powered it up with a 5V 1.3A power supply via power jack to double-check your problem, and it boots.
    Are you maybe trying to power it up at 5V while an LVDS is attached?
     
  13. Gary Huband

    Gary Huband New Member

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    Using Vin/GND pins on the inner header I've powered the board using 6V, 7V, and 12V (5V did not power). I've powered the board using the micro usb when plugged into the usb of my computer. I haven't used the barrel jack to power the board.

    My original question was how to power from Vin/Gnd pins, which you answered.
     
  14. Andrea Rovai

    Andrea Rovai Well-Known Member

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    We have just tried to power the board via VIN and ground exposed on the pinout at 5V with a 5V power supply connected to the barrel jack with mouse and keyboard attached, and it boots.
     
  15. Gary Huband

    Gary Huband New Member

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    OK, I want to use the Vin/Gnd without the barrel jack, which is working great! Thanks.
     
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  16. menegolli

    menegolli New Member

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    So, what is the correct voltage and current to apply to VIN pin? Can you please update the Docs?
    Thanks
     
  17. waltervl

    waltervl Well-Known Member

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  18. Evan Morris

    Evan Morris New Member

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    can you please update this? The documentation doesn't even tell us a voltage range for powering via Via/GND pins. I assume it's 5V - 12V, but I'd really like some actually specs on it.
     

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