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How to get voltage & current equal to 2xAA batteries from APM2.5?

Posted by Ahmet YILDIRIM on August 7, 2013 at 3:01pm

Hi everybody,

I'm planning on attaching a camera onto my quadcopter. It is powered by 2 AA batteries, and it weights much less without them.

So how can I get voltage & current equivalent from APM2.5?

Camera : http://reviews.cnet.com/digital-cameras/canon-powershot-a410/4507-6501_7-31475449.html

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Replies

  • Phil P August 7, 2013 at 8:27pm
    3.3v regulator is most common. You could use that with a diode to drop the 0.3v
  • Phil P August 7, 2013 at 8:20pm
    Incorrect! A voltage divider only works with a constant load resistance, which your camera is not. You need a 3v regulator.
  • Moderator
    Nathaniel Caner August 7, 2013 at 4:01pm

    What you need is a voltage divider. Though I wouldn't try to take power directly from the APM, I would splice a voltage divider on the main power connection before power reaches the APM. Check out the following page to learn about constructing a voltage divider. Remember to keep in mind your current requirements as well as what you expect the min/max voltages at the source to be, then design the circuit to meet those parameters.

    Regards,

    Nathaniel ~KD2DEY

    Voltage Divider
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