question for DJI 450

J

jguan

Member
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?

Thx,
James
 

OneStopRC

OneStopRC

Dirty Little Hucker
When you say a 12V DC power supply, what do you mean this? like a car battery or a Plug In PSU?

If your using something that plugs into an outlet for instance, you may find the load on the supply is not enough to run your Naza as your Motors and ESC's are drawing the current away from the Naza. In any case, I would not attempt to do such a thing as you could inadvertently pull current through the Naza or your receiver and toast either or both.

Your ESC's are marked 30A Opto, if your can't supply a decent amperage using your Power Supply to feed at least 30A, you probably won't get things to work right. Do you not have a battery for it?
 

Bowley

Bowley

Member
I was imaging you were using some kind of PSU and wondering how you knew it was working in manual mode. my thoughts were along with Deanots but current deficiency should apply in manual mode as in Att/GPS.
 

J

jguan

Member
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.
 

J

jguan

Member
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.
 

OneStopRC

OneStopRC

Dirty Little Hucker
Mine does the same thing in Atti, the motors are slower. 17 amps is not enough, and I suspect the load is being pulled away from your controls. I don't know how the Naza works internally, but it would seem it routes direct control from your receiver when in manual mode? Never-less, 17 Amps is not enough, and pulling current like that could damage components.
 


hershey

hershey

Someday Finally Got Here
Maybe I'm missing something but I have to ask, Why? Theres got to be a wire connection involved and range would have to be very short and the proper ga. wire for even a 10' long cord would have to be like 6 or 8 ga. to carry the amperage needed to fly. Way to heavy for any control of the copter.
 


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