Electric motor malfunction

Discussion in 'General Electronics Chat' started by Billtull, Apr 30, 2015.

  1. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    have a hexcopter, I built it but it never flew, I burned up 8 motors or more, I put an 11.1 v 25 c battery on it, I bought 1000 kv 12 volt max motors for it a kk2.1.5 flight controller , 6 Electronic speed controllers, My Problem is 1.)i keep frying the motors 2.) I rarly see all motors spinning at the same time, so it always crashes before level flight, now, I decided that it was pulling so much current that it couldnt deliver enogh power to all 6 motors so, I put in 3 ohm resistors to lower the current going to the speed controllers and then motors, a modest 3 ohms, fried them emediatly, what should I do to make this work, anyone got an idea?
     
  2. Reloadron

    Active Member

    Jan 15, 2015
    963
    232
    I would start with posting a schematic and data sheets for the motors.
    What exactly is a 1000 kv 12 volt max motor? More information, data sheets and pictures would go a long way in getting help.

    Ron
     
  3. Billtull

    Thread Starter New Member

    Apr 30, 2015
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  4. Billtull

    Thread Starter New Member

    Apr 30, 2015
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  5. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    SUNNYSKY-Angel-A2212-2212-980KV-Brushless-Motor-for-Multi-copter-KK-QuadCopter
     
  6. BR-549

    Well-Known Member

    Sep 22, 2013
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    Have you ever done anything like this before?
     
  7. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    yup, i got 10.45 props on
     
  8. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    no not before, im a noob, an old noob, 55
     
  9. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    we didnt reallly have standard ways of doing stuff when i started, i tore apart and repaired some tvs, went to appliance repair school, wasing mashins, dryers electric ranges toasters etc
     
  10. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    hahaa my typing is not so good toooo.....
     
  11. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    I do know the ole e/i=r stuff but thats about it
     
  12. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    I was a jet mechanic when i was 20 something and i know mass x force= acceleration but its not helping me here thou
     
  13. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    Here is the only data I got for the motors
    Specification:
    Name: SUNNYSKY Angel A2212-980KV Brushless Motor
    Model: A-2212
    KV (rpm/v): 980
    Stator diameter: 22mm
    Stator length: 12mm
    Shaft Diameter: 3mm
    Motor size: Φ27 × 30mm
    No.of cells(Lipo): 2-3s
    Maximum Continuous Current: 14.5A/180s
    Max efficiency current: (4-9A)>80%
    No load current / 10V: 0.5A
    Internal resistance: 120MΩ
    Motor weight: 50g
     
  14. Reloadron

    Active Member

    Jan 15, 2015
    963
    232
    Well I did manage to fine this:

    Copter Motor.png

    Depending on the configuration these motors can draw some serious current. You mention the motors were burning up? I don't see how as long as the supply voltage is correct. The fact that all 6 do not spin up together would have me looking at the motor controllers and the flight controller.

    Ron
     
  15. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    here is the data for the electronic speed controllers
    • Constant Current: 30A
    • Input Volt: 6V - 12V
    • Max Current: 40A
    • Low-Voltage Cutoff: Auto detect and set
    Specifications:
    • High rate PWM
    • Low resistence
    • Sixteen cells Max (with BEC disabled)
    • User programmable brake
    • Low voltage auto setting based on battery
    • Throttle range self-adjusting
    • Soft start ramp up
    • Auto motor cutoff with reset
    • Runs motor in forward or reverse
    • Safe power arming program ensures motor will not run accidentally after turn on
    • Low torque start
    • Auto shut down when signal is lost
    • -----------------------
    kk2 board specs
    Specs:
    Size: 50.5mm x 50.5mm x 12mm
    Weight: 21 gram (Inc Piezo buzzer)
    IC: Atmega644 PA
    Gyro/Acc: 6050MPU InvenSense Inc.
    Auto-level: Yes
    Input Voltage: 4.8-6.0V
    AVR interface: standard 6 pin.
    Signal from Receiver: 1520us (5 channels)
    Signal to ESC: 1520us
    Firmware Version: 1.9S:pre-installed firmware.
    Dualcopter
    Tricopter
    Y6
    Quadcopter +
    Quadcopter X
    Hexcopter +
    Hexcopter X
    Octocopter +
    Octocopter X
    X8 +
    X8 X
    H8
    H6
    V8
    V6
    Aero 1S Aileron
    Aero 2S Aileron
    Flying Wing
    Singlecopter 2M 2S
    Singlecopter 1M 4S
    Firmware is 1.9S1.
    Package size: 10 * 10 * 3 cm / 4 * 4 * 1.2 in
    Package weight: 40 g / 1.45 oz
     
  16. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    its all pretty simple construction but just doesnt work.
     
  17. BR-549

    Well-Known Member

    Sep 22, 2013
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    But you have done this before and it did work.....right?
     
  18. Billtull

    Thread Starter New Member

    Apr 30, 2015
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    watched many videos on how to do it but, thats wher it ends till you get to the PI settings and reciever settings, did that , bought the T-shirt, not happening....
    i can get 4 or 5 motors running at the same time but not 6, put the quadcopter 4 motors together, same problem, something is missing
     
  19. Billtull

    Thread Starter New Member

    Apr 30, 2015
    27
    0
    not yet
     
  20. Billtull

    Thread Starter New Member

    Apr 30, 2015
    27
    0
    watched many videos on how to do it but, thats wher it ends till you get to the PI settings and reciever settings, did that , bought the T-shirt, not happening....
    i can get 4 or 5 motors running at the same time but not 6, put the quadcopter 4 motors together, same problem, something is missing
     
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