Discussions

Battery monitor issue

Posted by Franco Marinelli on October 24, 2011 at 9:17am

hi guys, this time im back because i detect some issue refer to battery monitor system in last mission planner.

On battery tab in APM setup screen its impossible write manualy any values..

and the battery voltage indicated is for example : 10.66 v but if i test the battery with my manual voltimeter it show me 11.35 v !!! why is that diference in mesurement?

 

my settings are: Monitor 1:3 Cell  Capacity 6000

(I have a lipo battery Dualsky 3 cells 11.1v,  6000 capacity.

 

franco.

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Developer
    Michael Oborne October 24, 2011 at 4:39pm
    the voltage monitor screen only works on the yet unreleased version of APM
  • Kirill October 24, 2011 at 12:43pm

    I am using AttoPIlot sensor. Had to rescale the voltage divider ratio to get the right values too.

    The difference in measurements may be explained as a voltage drop, because when you define voltage using multimeter - it doesn't cause big current flow (and a voltage drop as a consequence).

  • Farooq Niaz October 24, 2011 at 10:12am

    Hi

     

    Faced the same issue and I changed the value of the Voltage Divide Ratio (Rescaled it).

    //#define VOLT_DIV_RATIO 12.6
    #define VOLT_DIV_RATIO 14.364  //scaling 1.14 times

    # define BATTERY_EVENT    ENABLED

    # define LOW_VOLTAGE            10.5

    # define CURR_AMP_PER_VOLT        27.32

    I am using AttoPilot voltage and current sensor. Now I am approximately measuring the exact values

     

     

This reply was deleted.

Activity