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Battery voltage input

Posted by Stuart Brookes on June 29, 2014 at 3:04am in VRµBRAIN - support and discussion

Thanks for creating a microbrain room!

Ultimately would like the voltage input to be optionally used for current, but in the mean time I wired up battery voltage. But I am getting zero volts in mission planner and logs. I tried the various input options in the settings, but all show 0V. Is this working in the current firmwares?

Thanks,

Stu

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Replies

  • emile June 30, 2014 at 4:42am

    Be sure you have your parameter BAT_VOLT_PIN set to 10.

    There is an error in the default value that sets it to 100, this is wrong. It should be se to 10, and 10.1 for the BAT_VOLT_MULT.

    If you want to use it for current set the parameter BAT_CR_PIN to 10, but be aware that the resistor on the board will divide your voltage in by 10.

    Emile

    • Stuart Brookes > emile June 30, 2014 at 6:34am

      Cheers Emile!

      Just looking at that now, I now have a volts reading, although not battery volts...but that may be a strang interaction with my power module, I am going to resolder it to the current output.

      Cheers for your help,

      Stu

  • Stuart Brookes June 29, 2014 at 4:45am
    Hi Roberto. Yes that is where I have connected. Ground common to the 5v that powers the board. Battery is 3s so in limits.

    Stu
    • Roberto Navoni > Stuart Brookes June 29, 2014 at 5:19am

      Mhhh strange what parameter do you have in mission planner ? in battery voltage input parameter ? 

      can you send me your file configuration ... 

      best

      Roberto

  • Roberto Navoni June 29, 2014 at 4:10am

    Where you connect the external VBAT ? Are you check in the wiki ? 

    vrmicrobrain_top.png?width=650

    You need to connect the lipo batt on V_bat it's a pin near buzzer ... 

    best

    Roberto

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