Hobbyking pro multiwii gps motors uneven

[XpitcherX]

So I got my quadcopter built and setup and running but when I am testing it one of the motors was slowing and then stopping while there was still throttle on and all the other motors were still going. So I connected it and checked it in the GUI and noticed that front right and rear left would both drop in speed but the left rear was the only one that would get slow enough to stop. Right front would get down to about 50%. I brought max throttle up to 2000 in arduino but am at a loss as to why these motors would be doing this. I have calibrated acc and mag and gps is working properly. This thing is ready to test fly as soon as I can get this problem fixed. Any help would be great thank you

[waltr]

Did you calibrate the ESCs?
Was the quad level during this test run?
Were the props on or off?
Are all the solder joints from the battery to ESC to motor good?
Was the quad motionless when the MW FC board was doing the Gryo Calibration after bootup?

Changing Max throttle in the code will not change this.

[XpitcherX]

I calibrated the escs with the plush programming card and I think I did it with the ardrino code to no avail. I also have been starting and testing it flat on my table never moving it. I'm at a loss

[waltr]

Calibrating the ESCs is done by connecting them to the receiver. I don't think the programing card does a calibration to your RC transmitter/receiver.
Like this:
http://aeroquad.com/showwiki.php?title= ... g+the+ESCs

[XpitcherX]

I will try that today. The wired thing is that they all spin up to full throttle and then the two slowly creap down, one to half throttle and the other to no throttle. I really appreciate the help and am very thankful for this forum as it is the only one that has been helpfull. Your awesome. I will keep you posted. The other thing it does is when the motors are slowed if I give it a little yaw they will go back to full throttle then creap down again.

[waltr]

Ok, when the motors are slowing down check their ESCs for temperature, are they getting hot?
Same with the motors, are they getting hot?
There also could be a few bad solder joints that increase resistance as they heat.

which flight mode is the FC in? Try Acro (no other mode enabled).

[XpitcherX]

All the escs and motors seem the same temp. I got in contact with hobby king and they determined it was a bad board so they are going to send me a new one and I guess we will see if it is in the code or the board when the new one gets here. Thank you so much. I still will try to program the escs individually later and will let you know if it resolves the issue.

[gun2killer]

Is your battery loaded enough? the first time I used it, I also saw a moter went off, that was becose the battery couldn't give that much power anymore.

I reloaded it, and then it was over. I fly with a quadcopter, and when my battery goes under 30% a moter went down....

[bao]

while the quad is not flying the motors will slow down, if you throttle up and just stay still the motors (2 of them) will slow down, its not a bad board its just what multiwii does....
if you just go out and fly they will work perfectly i assure you , i just explained in mp the very same thing to someone and lo and behold it flies perfectly , i even did a test on my multiwii pro hex and if i throttle up and leave the throttle engaged , in the gui 3 motors slow down and also on the hex, it flies flawlessly.
Hobbyking are sending you another board, thats all benefit to you as you will have 2 working multiwii pro's and you will see the new board will act exactly as your first board but believe me they work

[XpitcherX]

I have to tell you I was quite unsure about flying with the stock settings due to the motors slowing but you were absolutly right. That should be documented somewhere. You saved me so much hair pulling out. Thank you so much.

[XpitcherX]

Now my other question is should it return to level in acro or is it purely just user inputs. It returns in angle mode but not in acro. Those are the only modes I have tried.

[scrat]

Acro mode for returning to level is just user inputs.

[waltr]

Think of it this way: Acro mode = Rate mode.
This means the the stick movement changes the "rate" at which the quad pitches or rolls. So when the stick is centered the rate of pitch or roll change is zero.
This mode is harder to learn to fly but has advantages. I'm now getting pretty good with it ans the one thing I like is once in forward motion the stick is left centered (even hands off) and the quad maintains the forward speed like 'cruse control'.

Angle In mode the stick controls the Angle in Pitch or Roll. So to maintain a constant forward speed you must hold the stick at that angle. \
With the stick centered the quad levels and stops forward motion.