"Hi Glenn, I haven't changed the design since 2013. It is still in the config as shown on page 12 of this blog. This config is better than the original, because it protects the battery and the half-pool noodle at the bottom gives extra crash…"

"To Glenn, thanks for the picture, I think it looks great!! I'm curious whether the GPS/Compass? on the pedestal helps to prevent compass drift on long distance auto flights? As I mentioned before, it normally can tend to drift when flying in a…"

"First to Zaozhi Gao: Sorry, but somehow I only see your great build now after more than 3 years! Well done, hope you could get your center of gravity sorted and kept the weight down."

"A fantastic achievement, but sharing the technical info of how you did it makes it even better! Thanks."

"I use center board 198 x 76.2mm to allow for some manufacturing tolerances. Arms lengths are 258mm.
On page 12 of this blog you can see more dimensions on drawing done by mdrm. Also picture of the current configuration I am still flying of this…"

"We did something similar recently building a data logger for aircraft.Have a look at http://diydrones.com/profiles/blogs/apm-as-a-flight-data-recorder

In short, if you want to log data onboard for extended periods, get a Pixhawk. We also learned a…"

"Another good reason to upgrade to Pixhawk. Thanks."

"Thanks Stephen, I'll look into that option. Sounds like quite a lot of hardware though that could start interfering with the compass in the box.
Can't I just write code to redirect the onboard logging to one of the spare serial ports where I connect…"

"Interesting to see these other applications for the APM. I'll be sure that there is a reliable manual overide before I let the APM control the plane I'm in though!
We are still working on a good solution to record data of flights longer than 20min…"

"Thanks! I'll update the blog."

"I see droneshare identifies the vehicle as Arducopter. Maybe I had Arducopter code loaded - could that be the problem?"

"I just did my first upload to droneshare. Hope this link is sufficient for you to view the log file:
http://upload.droneshare.com/view/d4jk7xr
Could the high airspeed (around 100 knots) be the problem?"

"Hi Andrew,
Yes I have logs although it is quite a large file as the flight was about 2hrs. GPS velocity was correct I think, as it plots accurately in Google maps and I use a Ublox GPS. I can upload to droneshare if you are interested.
What wasn't…"

"@Gisela & Joe: That is one of the reasons for this blog. I usually use arducopter code, but we loaded Arduplane on the APM (Some version current in November 2013). I'm not familiar with Arduplane, but am surprised to see this fundamental error and…"