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16 Motors?

Posted by Thomas Stanley-Jones on May 19, 2015 at 6:38am

Hi,

I'm curious if Arducopter with a Pixhawk can run 16 motors. 2 ESC's connected to each motor output.

Thanks,

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arducopter, motors, pixhawk

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Replies

Michael Duffy May 27, 2015 at 3:02am

Yes, you can use the x8 configuration and wire up two esc's in parallel. We have done this before:
- Thomas Stanley-Jones > Michael Duffy May 27, 2015 at 5:42am
  
  Those are great looking machines! I'm looking to build something similar to the second picture, but just a ring. How big are those props and the weight of the craft? What autopilot is it using?
Hans H. May 25, 2015 at 7:09am

Yes.
Daniel Nugent May 20, 2015 at 10:24pm

http://diydrones.com/profiles/blogs/what-s-it-like-to-be-an-intern-...
- Sajith > Daniel Nugent July 8, 2020 at 1:54am
  
  Is their a build video
- Thomas Stanley-Jones > Daniel Nugent May 21, 2015 at 9:01am
  
  Thank you! It's good to see it done at least once already.
Scott Reid May 19, 2015 at 8:41pm

As as each member in a pair is applying thrust and torque in the same direction as its twin.
- Thomas Stanley-Jones > Scott Reid May 19, 2015 at 10:05pm
  
  So each rc out will be controlling 2 neighboring motors that are turning the same direction as each other.
  
  I'm thinking of 16" props, based on the size of the copter. I have used a 6S battery to power 4 of these, and it does it nicely. Are there other considerations besides upping the capacity of the battery? With 16 motors turning 16" props, will the standard wiring going from the battery to the ESCs be sufficient? Are there power distribution boards that would handle this?
  - Andre K. > Thomas Stanley-Jones May 20, 2015 at 7:08am
    
    you have lots of reasearch to do.
    
    it's not about how big propellers you have, it's about the energy, how many Watts will a hover need, (depends on motors/props/weight & efficeincy) - you need at least need a current that supports hover current *2 - the rest you can limit in software (such big machines often end up on ridiculous theoretical maximum current)
    
    you have some work ahead of you - so start reading on the theory :)
    - Brad Hughey > Andre K. May 20, 2015 at 5:31pm
      
      The theory is all summed up here. Assume a FM of .60 to get started. Your mileage may vary.
      
      Lifting With Propellers - The Real Math Deal

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