MultiWii

I have this type of flight control board with a 2.1 GUI (default settings). I notice that the fc board reading (motor in particular) are not balance and sometimes intermittent. However, I've read from other thread or groups that it's normal.

Here's the reading when armed.


Notice here that front_L, front_R, read_L & rear_R motors has different readings when throttle up.


I take the risk, I give it a try and Trim my transmitter put on my battery and propellers. When throttle, I notice that motors 3 & 10 are not spinning. Motor 11 & 9 spinning fine.

And here's odd thing happens, when I move my yaw stick to the right (just a stick) I notice that motor's 10 & 11 spins normal BUT 3 & 9 spin at stuttering state?!

My questions are:
1. Is it the flight control board has that problem? If yes, what should be the possible solution to correct this?
2. Is it the motors?
3. Is it the ESCs? by the way all ESC's are manually calibrated.


Here's other specs of my quad.

Transmitter: Hobby King 2.4Ghz 6Ch Tx & Rx V2
Battery: Lipo Nano-Tech 25-50c discharge rate 3s1p
Frame: SK450 Glass Fiber Quadcopter Frame 450mm
ESCs: 30amp
Motor: 2212-13- Brushless Outrunner Motor 1000kv 150w
Props: 10 x 4.5

You might have better luck posting in the right section.
But, looking at your RC values, they should be fixed.
Clear all trims, note what value most channels want to be at (usually 1500 or 1520), change your MIDRC to that, then trim (once) until they're all centered at that value.
Dont touch trims again after that for this model

@timecop.

thank you for your immediate reply.

sorry if I posted it here. I'm new here. again sorry.

you mean I also need to clear the subtrim in my transmitter? please clarify.

another problem appear after several tries.


observed my Aux 2, it is moving independently.
what will be the possible solution for this


One thing I notice, the board is lying in flat surface (i mean in a stable position), I notice that the roll & pitch indicator in the GUI is not in its balance or on its stable position. Should it be on its balance or stable flat position in the GUI? Please confirm. or I just got a lemon copy?

thanks.

I notice that motor's 10 & 11 spins normal BUT 3 & 9 spin at stuttering state?!

Indicates bad connectin between Esc and motors.
Don't use Bulletconnectors! Solder well and isolate!...

observed my Aux 2, it is moving independently.

It sounds like theres no valid signal in on AUX2.
Are you using PPM or do you feed each channel from RX?
Check connections or test to move another channel to aux2.

Bad connections is the most common fault for this kind of projects.

I updated my GUI to 2.0 and Aux2 doesn't move any longer. is that normal? hmmm sounds mysterious.

I'm not familiar about PPM, so sorry i'm just a newbie on this.

thanks for your help.

i had the same problem changing the min throttle to 1100 (props spin when armed) fixed this problem

I just got the Hobbyking 328 P with FTDI board. When I took it out of the bag and hooked it up all of the channels in MultiWii GUI were stable. After flashing with the recommended settings from the files section on the hobbyking site with 2.1 now the Aux 2 values jump all over.