I have “motor stop” checked, but I’l try not checking it, sounds like a good idea. So you don’t know what might be causing the props to turn when no throttle is given and MAG is turned on? I have done ESC calibration, should I do it again?
First thing you might want to try is connect the PC and WinGUI while setting the MAG option.
Look at the motor outputs and see if there is any differences.
Ok, I’ll try this. I wanted to ask about one other thing also. The only way I can arm the copter is by first doing a gyro calibration with the joysticks (left stick low left, right stick low center), is this normal?
This is not normal but you need to be on a LEVEL surface when trying to arm unless it’s not possible.
Either you made the calibration on a not level surface and need to re-do it or you are not on a level surface when arming.
I screwed up, when I enable BARO is when the props spin even with no throttle, not MAG, sorry. Any idea what is causing that or is this normal?
Baro is a mode to keep the altitude.
It should be trigger un flight once you have the other modes calibrated.
Ok, thanks. You were right about the arming issue, I re-calibrated on a more level surface and now it arms without calibrating the gyro. The only other issue I have is a few minutes into flight the left rear motor stops turning causing a crash. I checked my connections, all seem good. I’m going to try a flight tomorrow and get a accurate time into the flight when this occurs.
Regarding above post, I flew the copter thru 2 batteries and the motor didn’t shut off, though the batteries weren’t fully charged. Hopefully it just had something to do with the ACC not being calibrated correctly. I didn’t enable BARO yet so next time I’ll try it and see how it goes. I did have another question; on the FCT should I make adjustments to the “Frame Size” and “Frame Aspect Ratio” when using a Hunter V-Tail 500? I’m going to experiment a little.
Regarding “motor stop” in flight sometimes it’s the controller sending a signal to the ESC which is bellow the minimum they are programmed for.
It can be the ESC calibration being done with wrong values OR the “Min Command / Min Throttle” values.
No need to change aspect ratio. The biggest change or adjustment with a VTail is the Yaw PID settings.
Having a very strong Yaw that need to be calmed down 
I calibrated the ESC’s using the advanced ESC calibration method thru the software in the FCT. If I continue to have a motor stop should I try re-calibrating the ESC’s? My “Min Command” is set at 1000 and “Max Command” is set at 2000, “Min Throttle” is set at 1220 in the FCT for reference.
Those values look fine, maybe the ESC shut down on Low battery ?
Just did a flight, left rear motor stopped. Battery was fully charged.
Only one motor ?
Which motor / prop / esc are you using exactly ?
Yes only one motor, it’s always the same motor. I bought the T-Motor Combo Kit RB-LYN-875. I am using the.T-Motors and Lynxmotion ESC’s that came with the kit. I was using the stock props that came with the kit until they broke due to crashes. I bought some Masterairscrew 10x4.5 props that I just started using yesterday.
Rear left would be connected to D6 right ?
I’m saying because if it was D3 (Rear Right) it would be the ESC that’s powering the Quadrino from it’s internal BEC of 5V.
It’s happening while hovering ?
Yes, rear left is connected to D6, D3 is connected to rear right motor. I think it has happened in flight and hover.
One thing you can do is swap the ESC between the two rear to see if the problem change position.
Ok I’ll try that next chance I get. Do I need to recalibrate the ESC’s after swapping them? I’m thinking no.
No they should have the same calibration already.
The calibration is actually sending the same signal to all of the ESC’s when calibrating.
If the problem move that mean a bad ESC and we will look at replacing it.
Otherwise it could be the motor.
I switched the ESC’s then connected the battery, now the left rear (D6) motor beeps once every few seconds. What does this mean?