Here is my quad video:



Power board doesn't exists, just I soldered + wires together and - wires together.

APM 1.4 with latest ArduCopter code. Uploaded via Mission Planner.

Did leveling process successfully

Did radio setup process successfully

Did frame set to + mode

Before everything just erased eeprom using erase command on terminal

IMU Shield is attached as you may see in video

ESCs calibrated all at once successfully.

Propellers CW and CCW successfully attached and front, back, left, right attached to APM properly.


Frame is made from Balsa Wood.


ESC: DualSky ESC 25A

Motors: DualSky 980KV (XM2830CA-12)

Battery: 3000mah 11.1V 30C


Entire quad weight: 910 grams


What do you think now?

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Also can you post the log from your last flight, using Mission Planner -> terminal -> download logs?

It would be help to see what's happening with the quad.

Logs attached, please check my last 3 comments in this thread

can you get over to NJ sometime?  It would be easier to troubleshoot in person,

I work in Paterson NJ, if you can get over during the week we can meet up in a local park or something and figure this out.

I'm out of country. Will try when I return back. But thanks for suggesting.

It almost looks like it's going to fly in some of those shots.  It could just need a bit of correction at liftoff.

Have you ever flown a quad before?  I get the feeling maybe not, but forgive me if you already know this.  It requires a bit of practice.  First time, it took me a while to get off the ground without crashing.  I spent quite some time with the motors at just below liftoff point sliding the copter around on smooth ground (concrete) to get the feel of the controls.  Then when you do get off the ground, fly keeping the tail facing directly towards you so that the controls parallel the movement of the copter - i.e. stick left = roll left.  After quite a bit of practice (days) with this, then learn how to rotate your brain as the platform rotates, flying first left/right and ultimately flying back towards yourself where left/right fwd/back are all reversed (I'm still working on that one!)

Here's a good site: http://www.rchelicopterfun.com/how-to-fly-rc-helicopters.html

To help with this, you'll want to wrap some bright coloured tape around the front leg of the quad to show you which is front.

BTW, what flight mode are you using?  Stabilise would be best.  There is Simple mode that flies in a set direction regardless of the orientation of the copter.  However, I notice you don't have a GPS or Magnetometer, so Simple mode won't work.

I have flied with Parrot and XAircraft for so much time, parrot has a takeoff feature and that solves a lot of problems. But overally I have played with Quads for some time. But thanks for suggestions.

I always use Stabilize mode and I'll add GPS and magnetometer. But I have to takeoff properly at first, always two sides of my quad rotates faster.



Changes made during last hours, learned them here in comments.

a) Connected Ground and Signal connection on ALL ESCs.

b) Manually calibrated EACH ESC.

c) Balanced ALL propellers properly.

d) To protect noise and that extension cables which may caused noise, I used original ESC cable extender and just cutted + wire on it.

Now after above changes NO ANY SIMPLE change! Everything behaves as before, exactly as originally uploaded video.

What do you think now?


More images attached:


Recent fly logs attached


Mark here's a graph of your last log, with roll_in(red) and roll(blue) plotted.

As you can see, you roll_in is not zero, which it should be if your trims and stick was centred.  From the looks of things, You have not calibrated your radio, AFTER centreing all the trims on your radio transmitter.

Also from you description of your motor test, one or more of you motors is getting intermitent signals.  This is either a bad connection at the signal in, or at the bullet connectors.  You need to check all of them and re-run your motor test.  There's no point in trying to fly, if the motor test does not pass.  You will just crash it.

I re-calibrated radio again.

All cable connections including signals etc. is proper.

Recently I get sometimes (random) takeoffs, but after takeoff my quad always tries to go on some direction, like after random takeoff it tries to always go to left.

Cables are OK. But in motors test just 2 motors spin for short period of time and after some random takeoff, it always try to go on a direction.

I got a strange point, if it makes difference.

I go to terminal, I enter setup -> motors

Motor 1 spins a little and stops

Motor 2 spins a little and stops

Motor 3 no diff but waits necessary delay

Motor 4 no diff but waits necessary delay

Then motor 1 spins again a little and stops and so on.

Anything here?


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