Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Low voltage alarm on way - Need advice

Discussion in 'General Discussion' started by ace5000, Jul 31, 2014.

  1. ace5000

    Joined:
    Jul 14, 2014
    Messages:
    23
    Likes Received:
    0
    Hello Guys

    I'm new at this and have done some searching but am getting different answers...

    I am flying a stock FC40 with no minimal extra weight (a 2800 battery at times).

    1. What should I set the low voltage limit at on the alarm which will be attached to the battery balance plug while flying?

    2. Should I also change the limits in NAZA? To what?

    Thanks!
     
  2. locoworks

    Joined:
    Jul 4, 2014
    Messages:
    471
    Likes Received:
    10
    set it to whatever it should be for 3 cells lipo??
     
  3. EMCSQUAR

    Joined:
    Sep 5, 2013
    Messages:
    1,692
    Likes Received:
    6
    Location:
    N 44.895 W 93.354 Minnesota
    Set 1st level at 10.8, 2nd level at 10.4
     
  4. ace5000

    Joined:
    Jul 14, 2014
    Messages:
    23
    Likes Received:
    0
    Thanks, but there is loaded and non loaded settings I don't understand. Can you be more specific for the NAZA settings?

    Also, per my question, what voltage should I set the aftermarket alarm to on the battery?
     
  5. J.James

    Joined:
    Apr 21, 2014
    Messages:
    1,882
    Likes Received:
    162
    Location:
    Upstate NY
    Best advise it to set the alarm buzzer a lil bit high when You first get it so it goes off early. Like 3.6v per cell so You have plenty of warning and time to land. and 2nd pcs of advise is just turn the phantoms low battery thing off when you get the alarm buzzer thing. SO it dont try to auto land and crash on you or land some place were you cant find it. Its pretty hard to fly when the 2nd level is hit and you have to keep laying on the left stick to keep it in the air while trying to fly back. Which also eats power to. making it that much more less app to make it back to the landing point. and even return to home don't work to well when its trying to land instead of flying back.
     
  6. ElGuano

    Joined:
    Sep 4, 2013
    Messages:
    2,219
    Likes Received:
    4
    When flying, your battery is under load so that is the only value you need to ever work with. Unloaded voltage is when your battery is resting, unused, and it will be higher than loaded voltage. The resting voltage actually is a better indicator of charge state, so you can refer to t after your flight.

    If you are flying by timer and will be back home and ready to land by the time your buzzer goes off, you can set it fairly low, like 3.5v/cell (it will be loaded that your buzzer will be seeing). If you are flying around and will rely on the buzzer to let you know when it's time to come home and land, set it higher, like 3.6v/cell.

    Your buzzer is independent of the phantom's own low voltage protection, so you should make sure you know what that is set to as well.
     
  7. ace5000

    Joined:
    Jul 14, 2014
    Messages:
    23
    Likes Received:
    0
    OK many thanks, I'm starting to get this. So when I get the alarm - turn protection off in NAZA - and set the alarm to 3.5?

    Can I set the 2nd level protection to a low level like 10 so it never trips to land but I still get warning lights?