Recent content by jguan

  1. J

    Mikrokopter Propellers selection

    I am going to build up an eight motors helicopter using T-Motor MT2814-10 and 4s battery. But not too sure about the propellers. A few options, see http://www.foxtechfpv.com/tmotor-281410-kv770-motor-p-824.html. Which size is best? And all the propellers are made by APC, but they are too...
  2. J

    Working voltage for motors

    Hi, Just wondering what is the maximum working voltage for motors, like DJI 2212, TMotor MT2814-10? I am using 4S battery, which could provide the maximum voltage around 16.5V. Do you think the motors can survive under 24V? Thx, James
  3. J

    question for DJI 450

    Thx. I will try a powerful Plug-In-PSU.
  4. J

    question for DJI 450

    Under Manual mode, the motors can speed up and make the heli hover in the air. However, under Atti or GPS mode, you can figure out by sound that the rotating speed of the motors are significantly lower than the Manual mode. There could be some extra protection under Atti and GPS mode.
  5. J

    question for DJI 450

    I do have batteries. But I want to try some other way to make it fly. I am using a Plug In PSU, which provides 12V and only 17A maximum output. Not high enough current could be the reason. Thx.
  6. J

    question for DJI 450

    Hi, I tried to power the helicopter by a 12V DC power supply (which equals to the normal voltage for 3S LiPo battery), and it worked fine under Manual mode, but did not work under Atti mode and GPS mode. The motors could start but could not speed up under GPS mode and Atti mode. Anything wrong...
  7. J

    freshman's questions on F450

    Thank you so much. It is so glad to see it hovering in air.
  8. J

    freshman's questions on F450

    Thx. I reset the original right direction to the front direction and adjusted the propellers. But it did not work well, either.
  9. J

    freshman's questions on F450

    Hi all, New guy to helicopter. Bought a DJI F450 a couple weeks ago with Naza M. I have a JR X9503 2.4 transmitter, a JR 921X2.4 receiver (including a remote receiver), no GPS, no Gimbal. The attached images show the frame and the setup with Naza Assistant 1.8. All the wires connections are...
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