Posted by Sandy Sound on August 25, 2014 at 4:54am
Hello everyone,I have a problem with my 3dr DIY Quad (running latest release) with mission planner 2 (Mac) setup with Taranis + X8R.Motor #2 does not want to play ball.With Pixhawk armed, prop does not spin like the others until a gentle throttle applied.At 40-50% throttle a beeping sound starts. It does not beep below that threshold.Copter wants to tip backwards when attempting take off.I have swapped ESC #2 with control to a different output on the pdb. No change.I have used a different ESC to drive the motor, no change.I have calibrated the ESC's "all at once" and manually calibrated ESC#2 with no change.You can see and hear the issue here:Is my setup problem ESC related?: http://youtu.be/EIIvVfpp2tA
You need to be a member of diydrones to add comments!
Got my replacement motor in the mail today. Have fittedand tested it and all seems well!
Hope to maiden tomorrow...
Thanks for your help and thanks 3DR for the awesome customer service! :)
Hi Todd, in the video above I have bypassed the Pixhawk and plugged the ESC direct to the receiver, it results in the same behaviour so I know it is not a Pixhawk issue. I have also tried a different ESC on the motor with the same result. I put a different motor on the ESC and it worked fine so I am concluding there is a fault with the motor.
Has anybody had this before and have a fix? If I don't have to send it back to the states it would be great...
When you say "try calibrating all motors individually not all at once" are you referring to calibrating the esc?
I have done that already.
Motor #2 stops responding to more throttle once it starts to beep... so I believe the tipping back is related to a loss of thrust at the rear and not an unbalanced copter.
I have tested with motor #2 on ESC #4 and it reproduces the same fault.
I have tried ESC#2 on Motor #4 and it behaves appropriately so I believe it to be the motor.
This test was done bypassing the Pixhawk and taking channel 3 direct from receiver.
It shudders at low throttle, and then beeping starts around 40-50% throttle and as I increase throttle from there it does not pick up any further speed and the beep turns into a long tone of unhappiness ha ha.
Replies
Hope to maiden tomorrow...
Thanks for your help and thanks 3DR for the awesome customer service! :)
UPDATE: 3DR have agreed it is a faulty motor and are sending me a replacement :) Thanks 3DR!
Has anybody had this before and have a fix? If I don't have to send it back to the states it would be great...
When you say "try calibrating all motors individually not all at once" are you referring to calibrating the esc?
I have done that already.
Motor #2 stops responding to more throttle once it starts to beep... so I believe the tipping back is related to a loss of thrust at the rear and not an unbalanced copter.
Hi Sandro,
I have tested with motor #2 on ESC #4 and it reproduces the same fault.
I have tried ESC#2 on Motor #4 and it behaves appropriately so I believe it to be the motor.
This test was done bypassing the Pixhawk and taking channel 3 direct from receiver.
It shudders at low throttle, and then beeping starts around 40-50% throttle and as I increase throttle from there it does not pick up any further speed and the beep turns into a long tone of unhappiness ha ha.
Any ideas what that could be? Video Here:
https://www.youtube.com/watch?v=ftfXZCHi_IY&list=UUDyOS2q7CLEP7...