"Most likely hardware. Somewhere in this thread there was a technical description of the causes of this problem.
And if I remember right there are no genuine 3DR Pixhawks showing this behavior (LSM303D reporting false values)
But I don't think you…"

"If this works for me, i'll just use a spare battery connector and connect the poles. Just plug it in before fligt and voila. Not too difficult..."

"Very nice find!
Looking forward to trying this in the field.
I have some extra capacity in the lines to the ESCs so that fits in quite well.
Did you actually measure the rate the voltage drops when battery is disconnected."

"Power issues is an interesting point.I had some power issues since the beginning (RTFHawk, intermittent LSM303D failures).
I always related it to my usb connection not giving enough power to the board.But unfortunately these problems are quite…"

"You are writing that Tridges log summary shows "more" failures of the LSM303D with clone boards. Do you mean more LSM303D failures than MPU6K failures with clone boards?
I think I haven´t found one statement of LSM303D failure with genuine 3DR…"

"So, since the MPU6K failures are somehow "resolved".
What about the LSM303D.
Are there genuine 3DR Pixhakws with IMU2 Errors. I think Tridge stated that it´s only(?) clones.
And is there any way of knowing if it is a definitive hardware problem."

"Have there been reports of the LSM303D failing mid-flight?
As far as I have been reading it looks like all the related crashes where MPU6K failures.
And is the mentioned maufacturing process affecting only the MPU6K or both IMUs?"

"AutoTune, of course.Looks like an ECG, and you even wrote that you did AutoTune.
Sorry for confusing..."

"I´ve got n RTFHawk ordered in April with lsm303D issues."

"In my opinion this looks like a hardware failure. Could be the MPU6k but RCin also looks strange on channel 4 in the first log and the gyro values on the second log ?!.
And Randy and Tridge stated quite clearly that the MPU6k failing is most…"

"There is still some confusion and a lot of people asking the same questions.
As it is affecting quite some people, let´s try to clarify the issue and perhaps
@ThatJoshGuy
could append the approved findings to the starting post of this thread if…"

"Do you think temperature changes could be part of the problem? I brought it up in the beginning of the thread but my first assumptions regarding my logs were biased.
Anyway, there are a lot of reports related to temperature.
I didn't come up with a…"

"The issue described in the beginning of this thread an commented by Randy is Pixhawk(and Derivates) only. It is related to one of two IMUs failing, APM has only one."

"Thank you from my side, too.
If you suggest any testing routine I would happily do it, when I'm back in Germany in January."

"There have been reports of 3DR boards with the fault, too.
In 3.2 both IMUs data is used for the EKF. That's probably why it is tested more thoroughly.
The "option to disable this check" is already there.
Just disable the prearm checks.
I'm flying a…"

"My baro temperature is actually rising during flights.
It's probably some component heating up the interior of the case.
The baro temperature won't neccesarily correspond to the outside temperaure. Especially as it is normally packed in foam or…"