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Thread: Control ESC as Servo

  1. Control ESC as Servo

    Has anyone had any luck or complete lack of lucking running two large (say 60 amp) ESCs and motors off of one of the Serializer Digital Servo ports (external power suppy of course).


  2. #2
    Join Date
    Apr 2008
    Sacramento, CA, USA Area
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    Re: Control ESC as Servo

    Sure - I've run a 2.5 channel 160A/channel Robot Power Solutions motor controller from it.

    You just need to pick an ESC that is PWM driven. Any should work fine.
    I Void Warranties´┐Ż

  3. Re: Control ESC as Servo

    Cool I need to run two Electric Ducted fan/Motors and using the serializer to run the ESC will make my life much easier. :-). The flying robot project has become somewhat more complicated then I originally though (I am guessing thats a pretty common revelation)

  4. #4

    Re: Control ESC as Servo

    Yes its a common revelation... though I seem to keep having the revelation over and over again with my robot project

    Trial and error is fun though!

    Love to hear more about your project I'm currently deciding if I want to play around with UAV stuff.

    FYI if you haven't seen it has a ton of good info

  5. #5
    Join Date
    Apr 2008
    Sacramento, CA, USA Area
    Rep Power

    Re: Control ESC as Servo

    I *really* don't think you're going to be lifting a Serializer, two 60A motor controllers, the batteries to power that, the weight of the ducted fans, ... It's gonna take a lot more than 60A motors/controllers to lift that kinda weight. The energy density isn't high enough. Have you considered JP1 (Jet fuel) and a carbon composite monoque frame?
    I Void Warranties´┐Ż

  6. Re: Control ESC as Servo

    You might be right and If I have to go bigger I can... However currently two 60Amp EDFs put out about 48oz of static thrust give or take a bit. My current weights are...

    chassis 8oz
    Serializer 3oz
    Motors 3.5x 2 for 7oz
    battery about 8 oz
    ESC 2.1 oz x 2 for 4.2oz

    plus a few more oz of random stuff should bring me to 35oz flying weight not really much of a buffer zone for lift but the chassis is easily reconfigurable for addition of a third motor (which was really my plan from the get go) the other option is to upgrade to some 30oz thrust fans (they weigh a little more and draw 14.1v as upposed to the 11.1v in the 24oz fans but actually draw less amps and would over all be an upgrade)

    Weight and gravity are a pain in the ass...:-)

  7. Re: Control ESC as Servo

    another part of this question would be. using the serializer as a motor controller what "position" do you have as "off" on the seralizer. Servo motor position = 0 or Servo motor position = -100


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