ESC's calibrated now but still have an issue

 

Thanks for the posts.  Here is what I did last night.  I had some good sucess but now I have a new concern. 

I decreased the throttle trim from the 25% (1/2 down from the default 50% setting) to 0% (full down).  This got the PWM value down to 1017 (see picture ending in _212836.jpg).  I tried to calibrate the ESCs after that but the Motors/ESCs would still beep and twitch.

Then I went into the “Travel Adjust” menu on my DX-7 Transmitter and while watching the throttle value on the “Radio Calibration” screen of the Mission Planner software, I adjusted the “Low Throttle” travel adjust over 100% until the PWM went down to 980 (see picture ending in _213725.jpg).  The “Travel Adjust” setting that yielded the 980 PWM value was 108% (see picture ending in _213758.jpg).  After doing this I tried to calibrate the ESCs again but they would still beep and twitch.

Then I re-calibrated the ESCs again.  It seemed to calibrate correctly and after the “confirmation” beep I raised the throttle and all of the motors spun up at the same speed.  Then I disconnected the Flight Battery and reconnected it again.  This time it sounded the initiation series of beeps (three beeps to indicate a 3S battery pack) then no beeping or twitching…. Hooray!

At this point I had the props off.  With the motors seeming to run okay, I would put in a Yaw input and I could hear the motors change speed but when I gave it a series of yaw and/or pitch or roll inputs, all of the sudden all six motors went to full speed and I could not get the speed to come down until I disconnected the Flight Battery pack.  This is not good!!  What do you think is causing this to happen?  Now that I have the ESCs calibrated should I change the setting of the “Travel Adjust” back to 100%, and/or should I adjust the “throttle trim” setting back to 50% (default)?  If I change the setting on either of these settings should I do the “Radio Calibration” using the Mission Planner software again?

Please let me know what you think because I do not want to try to fly my Hexacopter if it is going to arbitrarily go to full throttle on all six motors!

 

Thanks,

Dale

P.S. When I was running the motors (without props) I noticed a lot of vibration on several motors.  Once I get the “Motors going to full throttle issue” fixed I want to try to balance the motors.  Like I was asking before, is there a Command Line Interface (CLI) that I can use to select only one motor at a time so that I can balance the motors one at a time?

20130619_212836.jpg

20130619_213725.jpg

20130619_213758.jpg

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