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For what it is worth here is some more detailed background on gain and rate control for Multicopters. http://wiki.openpilot.org/display/Doc/Stabilization+Tuning++Multirotor including a video etc. PID loop tuning is very common to our industry.

Yves.... Can I then assume from your information that voltage protection for a 3S battery supply would be as follows? 3.55 x 3 = 10.65 so for - 10 deg C this works out as follows: 1st level protection: 10.65 - 0.7 = 9.95 volts (under load) 2nd level protection: 9.95 - 0.7 = 9.25 volts (under load)

Bradatech...... Thank you for the excellent information. I realized that battery, i.e., electrochemistry is greatly affected by temperature but did not realize that the DJI voltage monitor would be off at that temperature. In any case I will need to make these adjustments using NAZA Assitant on...

That really caught me off guard......as I had intended to swap out that short cable for one slightly longer for the field. A cable with the same plug gender at both ends is quite uncommon but I did find one. Now I need to do a detailed continuity test before using it. And then there is the issue...

Reduced my troublshooting time by not getting involved with the iOSD at all.... had enough on my plate without that extra challenge. I drove to a flying site that had no internet access, booted up GCS and selected connect to my 900Mhz datalink system and there was the MR shown at the appropriate...

My voltage protection settings are as follows: (these are fairly new Hyperion 4S batteries c/w battery calibration via NAZA and multimeter).

When I accelerate my MR motors hard, the red led begins to blink indicating 1st level voltage protection but only momentarily (until I return to a lower throttle speed). Once the red led blinks consistently I land asap. I assume the intermittent red led blinking is because the motors, during...

Looks like a good soldering iron system c/w temperature control and replaceable tips. Just use the larger flat sided tips to transfer heat more rapidly..... the small pointed tips are only for fine pcb and/or smt work. Tinning the tip immediately before applying the tip to to copper wire will...

Others will be better qualified to answer that as I have not yet switched mine to GCS autonomous control. First.... what was that strange puff of smoke or debris appearing in your video around the 5 second mark. Here is a still snip of when it occurred. I assume you completely flight trimmed...

Faulty DJI GCS USB cables? With all the Quality Assurance directed toward the complex electronics, firmware and software, it is unlikely time and effort would be invested by DJI to investigate the quality of a cheap cable they had produced by a 3rd party cable manufacturer. But a $2.00 faulty...

Trust you were able to get GCS working as per the comments on this forum..... a Google Earth installation problem or modification of the Google Earth program configuration by something else. Also watch out for a miswired USB cable with the double head as provided by DJI for the base radio. Mine...

BTW - How do I determine whether my iOSD is the original or Mark II? I bought it new between December and Jan 2013 when there was a Christmas sale on this item.