Did I Have a Fly Away or Did the Drone Return to Home?

Cyberpower678 · Jan 20, 2017

msinger said:
No.

Darn. Would be nice to have such a tool available.

yellowtennies · Jan 21, 2017

Cyberpower678 said:
Yep. It will make the flight available for us to see.

Hopefully I did this correctly.

HealthyDrones.com - Innovative flight data analysis that matters

looking forward to learning more about this data from those who review it.
There appears to be a 'dead end' track just north of the road. i don't know what
this is.

HealthyDrones.com - Innovative flight data analysis that matters

yellowtennies · Jan 21, 2017

msinger said:
Please also upload your TXT flight log to my log viewer above. Healthy Drones is not going to provide much useful data.

Thanks for your willing to help.

CactusJackSlade · Jan 21, 2017

I have not really studied these logs before.... but doesn't it indicate the last three minutes it flew away from you then auto landed due to critical low battery?

Also, if you hit the return to home AFTER you lost signal it was likely that it never received that command.

How is your lost signal command set up? You have three choices in the advanced settings:

1) Return home and land
2) Hover
3) Land

If you have it set to #2 or #3 above that would probably explain what happened.

OO05REN · Jan 21, 2017

Looks like it initiated auto landing at 20'15". It was 197.7m altitude and probably took 34 seconds to land whilst still going forward ( wind direction shows it was drifting in Atti mode whilst landing)
My money is on the end of the yellow line is where it landed. Good luck, I hope you find it.

OO05REN · Jan 21, 2017

Just having a look at the sensor info - point (j)states it was at 157.5m altitude at 20'30" so was obviously in auto landing mode but my calcs suggest that total flight time of 20'51" so from 157.5m to 0m in 21 seconds is a decent speed of 7.5m per second ............. that's almost the same flight characteristics as a brick ! Not sure what will be left of the Mavic dude.

Cyberpower678 · Jan 21, 2017

OO05REN said:
Just having a look at the sensor info - point (j)states it was at 157.5m altitude at 20'30" so was obviously in auto landing mode but my calcs suggest that total flight time of 20'51" so from 157.5m to 0m in 21 seconds is a decent speed of 7.5m per second ............. that's almost the same flight characteristics as a brick ! Not sure what will be left of the Mavic dude.

It looks like it landed in the woods so if that's the case, the tree may have broken the fall a bit. That it's stuck in one.

Sent from my iPhone using MavicPilots

OO05REN · Jan 21, 2017

Open field just north of Indian Lake Road NW

Cyberpower678 · Jan 21, 2017

yellowtennies said:
Hopefully I did this correctly.

HealthyDrones.com - Innovative flight data analysis that matters

looking forward to learning more about this data from those who review it.
There appears to be a 'dead end' track just north of the road. i don't know what
this is.

HealthyDrones.com - Innovative flight data analysis that matters

It looks like you lost connection during the landing process. Analyzing the trajectory it had, and assuming it didn't lose power during landing, it looks to have landed around the coordinates 46° 2'10.91"N and 95°27'46.54"W. It appears to be an open field, so it should be fair easy to find.

Cyberpower678 · Jan 21, 2017

OO05REN said:
Open field just north of Indian Lake Road NW

I was looking at the map on my phone so I didn't quite see it correctly until I opened the data on my computer.

Sent from my iPhone using MavicPilots

Cyberpower678 · Jan 21, 2017

I'm also seeing another concern that resulted in RTH failing. You took off without sufficient GPS strength to lock on the home point before take off. Consequently, the log doesn't indicate the home point was set on take off. I'm also seeing several compass errors in your compass subsystem. It looks like the RTH was trying to use the compass to come home, only that it wigged out midway through.

willhay555 · Jan 21, 2017

Cyberpower678 said:
I'm also seeing another concern that resulted in RTH failing. You took off without sufficient GPS strength to lock on the home point before take off. Consequently, the log doesn't indicate the home point was set on take off. I'm also seeing several compass errors in your compass subsystem. It looks like the RTH was trying to use the compass to come home, only that it wigged out midway through.

As someone who's expecting a mavic on Monday, do you get confirmation of sufficient GPS and a lock on home point or is it easy to miss this?
Thanks.

Sent from my D6603 using MavicPilots mobile app

msinger · Jan 21, 2017

willhay555 said:
do you get confirmation of sufficient GPS and a lock on home point or is it easy to miss this?

If the volume is turned up on your mobile device, DJI GO will announce when the home point has been marked after starting the motors.

yellowtennies · Jan 21, 2017

Cyberpower678 said:
It looks like you lost connection during the landing process. Analyzing the trajectory it had, and assuming it didn't lose power during landing, it looks to have landed around the coordinates 46° 2'10.91"N and 95°27'46.54"W. It appears to be an open field, so it should be fair easy to find.

I have been out most of the morning looking for it. The area where the green line ends, is an open field of modest rolling hills. Raining for the last 12 hours so the snow cover is disappearing. The ground is covered with prairie weeds, clumps not more than 18" high.
I started the search by studing the flight lines from CyberPowers flight data, the one with the second by second flight data with the map above it. I then eyeballed the end of the green line in the field and marked what I thought was the end of the green line onto my Navionics navigation app I have on my iPhone. With CyberPower providing the actual coordinates, I am about to head out again to search for the drone.

Cyberpower678 · Jan 21, 2017

yellowtennies said:
I have been out most of the morning looking for it. The area where the green line ends, is an open field of modest rolling hills. Raining for the last 12 hours so the snow cover is disappearing. The ground is covered with prairie weeds, clumps not more than 18" high.
I started the search by studing the flight lines from CyberPowers flight data, the one with the second by second flight data with the map above it. I then eyeballed the end of the green line in the field and marked what I thought was the end of the green line onto my Navionics navigation app I have on my iPhone. With CyberPower providing the actual coordinates, I am about to head out again to search for the drone.

Keep in mind that these coordinates are an approximation I made through a rough analysis. Also, since it's been raining, you should let your Mavic dry out first before sticking in a fresh battery, else you may damage the Mavic by shorting out some components.

m0j0 · Jan 21, 2017

When you find it...and you will find it. I would probably use canned air to get the water out of the motors. That should be the only place that water causes an issue.

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yellowtennies · Jan 21, 2017

Cyberpower678 said:
Keep in mind that these coordinates are an approximation I made through a rough analysis. Also, since it's been raining, you should let your Mavic dry out first before sticking in a fresh battery, else you may damage the Mavic by shorting out some components.[/QUOTE

To all of you who have helped me learn more about my drone, a sincere thanks.
I have benefited greatly from your knowledge and advice. I simply went to where you told me to look and found it, unscathed. None of the rotor were compromised.

I plan on reaching out to DJI directly, sharing the flight logs, to determine what caused the fly away.

Thanks again,
Yellowtennies

yellowtennies · Jan 21, 2017

m0j0 said:
When you find it...and you will find it. I would probably use canned air to get the water out of the motors. That should be the only place that water causes an issue.

Sent from my iPad using MavicPilots