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Questions regarding one of the article [How-to guide: Pixhawk with 6S batteries (> 4S)]

Posted by Liu PanLing on May 6, 2015 at 5:50am

http://diydrones.com/profiles/blogs/how-to-guide-pixhawk-with-6s-batteries-4s?id=705844%3ABlogPost%3A1558085&page=-1#last_comment

Hi, guys. I have some questions regarding the calculation part for the above article,

can someone explain to me ?

I thought Rl suppose to be 0.44 micro ohms instead of 44 k ohms ?

and where did you get the 73.2 k ohms ?

Thanks.

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Replies

  • MR60
    Hugues May 6, 2015 at 10:11am

    Hi Liu, i post here the same message to answer the same question asked in the original post : it is advised not to use resistor dividers but rather use the 180 amps version of attopilot, if you need to measure more than 90 amps of current. The reason is that adding resistors on the attopilot output interacts with the "internal" resistors and capacitors of attopilot and makes the readings unreliable. For more details on this, you would have to read the pages where this is explained in the original post.

    Cheers,

    Hugues

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