"Ed, it looks like your battery is right next to the GPS and the power wires connecting battery are not twisted. I would try twisting those wires and moving the battery to the bottom of the craft away from the GPS and MAG."

"a higher mast for the GPS and MAG helps immensely, anything to get away from the battery and power wires where the most current is flowing. Make sure your power wires are twisted. This has a lot of useful info, im sure u have already seen though...…"

"Hey DG, very nice Y6B! I have a similar Y6B build with tritrooper/skyhero 750 frame. What did you use to mount the GPS mast to the back arm?

Don't mean to thread jack, I was looking on what prop sizes to go with for my MT2814-11 710Kv motors on my…"

"Bill I just built APM Planner v2.0.16-rc1 from git and everything works as it should for my camera gimbal. I suspect maybe the windows binary for APM Planner may have not been built from code that has the fix yet?

Thanks to everyone for their help"

"I got no tone and lsusb shows connected.

I just figured it out guys, kind of weird. I run sudo apt-get remove modemmanager and it outputs: Package 'modemmanager' not installed. dmesg shows TTY_ACM0 being connected as PX4 3D Robotics but then last…"

"I actually had already added the user to the dialout group, I tried latest GIT version as well. I think it might be an issue with Pixhawk and 14.04, I am going to try loading diff version of ubuntu.

I really like APM Planner and plan on using it in…"

"For all I know the issues I am having may be caused by Pixhawk and Ubuntu 14.04, everyone has different computers and OS running on them. My point is to try different software, not trying to make this APM planner vs Mission Planner.

And the bug…"

"Kind of makes sense in your situation with OSX being a UNIX like environment. I have had numerous USB issues in virtual environments which is probably why not flashing correctly. I bet it would work using bootcamp without issue.
I am not trying to…"

"What version of Linux are you running? I am on Ubuntu 14.04 LTS and modemmanager is removed.

I don't think the gimbal issue was solved, hence the camera problems. My point is that it is very hard to troubleshoot hardware issues with faulty…"

"Thanks Randy!
I see in the code where it looks for the external led first and if not found then loads the internal led. Im tempted to mess with the code, but i agree that just adding another led to the i2c splitter is the simpler solution."

"How would one go about implementing that both the internal and external LEDs light up?
I installed the external led on the bottom of my Y6 with the thinking of being able to see it while flying. Unfortunately I lose the ability to see the light…"

"Ok I soldered the three connections, loaded the test firmware but getting this error:

Failed to initialise ADNS3080

Any ideas?"

"Also I am running APM2 with 2.5.4 and using APM Planner 1.1.80 mav 0.9"