MultiWii

the problem was solved
I had to replace the whole propellers.

Very hard to tell but it looks like the props are on the wrong motor and/or the motors are all turning the wrong way. Is Green props the front and red the back. If so then recheck the MW Wiki and tutorials plus the beginnre's thread. Show us a screen shot of Multiwiiconfig.exe with the RX/TX on and...

my config.h

I've shared a video on youtube . watch the video and help me please

http://youtu.be/zh3OmCTiQsw

Is there anyone who can help ?

waltr wrote:This sounds more like a Bad solder joint between ESC and Motor or a broken wire inside the motor.
OR- very badly out of balance motors or props or both.

when throttle %50 and right stick pull right or left, flipped my quadcopter (left or right motors turns normally)

DOES NOT fly Vibrates more

Why are you using GY80IMU ?

waltr wrote:Re-calibrate all the ESCs directly from the RX throttle channel.

How do I make it ?

when I connect esc direct rx ch3 motors turn very fastly

yes I'm activate the define ESC_CALIB_CANNOT_FLY

hi, I'm new
I make a quadcopter "quadx"
I use
1100 kv motor
25 A esc
multiwii SE v2.5
3s 2200 mah battery

but the motors does not turn fast enough and not flying quadcopter.
please help me