and they have yet to fix this issue?
Pretty sure in the idiots guide it clearly states that the battery in both the phantom and the TX should be both fully charged...
and they have yet to fix this issue?
Once it was realized, they released 1.6 as you no doubt already know. Hopefully it's the fix or at least a band aid until a better fix is available.and they have yet to fix this issue?
2) prevent drastic voltage sage by not going max throttle if the battery is lower than 70%
this is quite possibly the dumbest thing I've ever heard....you can't use the quadcopter for it's intended use under 70% battery....that's laughable!
What's laughable is that you've had a p3 for a couple weeks and you think you're an expert because you had a p2. They are nothing at all alike.this is quite possibly the dumbest thing I've ever heard....you can't use the quadcopter for it's intended use under 70% battery....that's laughable!
SEND IN THE DIVER.... you can get the phantom off of the bottom and that memory card will likely still be good also. SanDisk memory cards have often been fine even after lengthy underwater periods... can't wait to learn more. One question I have is, why do you keep asking others what YOUR logs say? it's a puzzle...No, I know where it landed though. Its in about 7 foot of salt water. I have a buddy that scuba dives, might have him come over and look for it. What is it worth?
Don't know what happened in your case but losing signal would have put it in the return to home mode and it would've paused and then the return to home mode would kick in and it should have come back home and landed. This has happened to me several times and home it came.I was flying my phantom on vacation. I was 300 feet up about 100 feet out. No big deal but i lost signal instantly. It didn't get weak like it normally does when your too far away. It just cut out. Moved my controller to try to get signal. I hear it buzzing out of the sky and into the water. What happened? Will DJI refund me as flyaway if i send my flight log? I have recording up until I lost signal.
In the cases of lately where the battery cuts off and you get total power outage signal is lost immediately. But did you say you ask he heard the motors were still running on the way down that would eliminate that possibilityI was flying my phantom on vacation. I was 300 feet up about 100 feet out. No big deal but i lost signal instantly. It didn't get weak like it normally does when your too far away. It just cut out. Moved my controller to try to get signal. I hear it buzzing out of the sky and into the water. What happened? Will DJI refund me as flyaway if i send my flight log? I have recording up until I lost signal.
Why would a signal loss result in it plummeting out of the sky? Ive lost signal several times and it just hovers.[/QUOTESignal loss should cause it to fly home.
How do you view the logs? What's the procedure for downloading.A lost signal will not cause it to fall out of the sky. Check out your logs. They should tell you exactly what happened.
See the instructions below the gray box here.How do you view the logs? What's the procedure for downloading.
You're right, DJI has some work to do, this isn't over unless they have absolutely REMOVED the routine that will shut off the battery DURING FLIGHT. I suppose DJI's intention for the shut off scheme was to prevent battery damage in the case where you leave the drone on and accidentally store away for days in your case. That kind of a mistake could damage a battery, so they may have been trying to prevent that from happening. However they forgot the fundamental logic of the inclusion of shutting off the battery ONLY when it's NOT FLYING. Dah!it seems to me that dji has at least tried to address this in the latest fw. whether it is a definitive fix or not we will need to wait and see.
i have a lot of experience with lipos and pushing lipos to their limits (within reason of course) because i use them on my multiple electric bikes building battery packs that are 18s 30ah and beyond.
using the voltage to determine how much battery life is remaining is suspect at best. and as we all know, voltage sag is real and can cause problems like this. voltage on lipo batteries isn't linear and it really drops off when cells hit around 3.5v so within a matter of seconds, when you combine discharge + high Cs for discharge, you can find yourself <3.0v.
this is probably obvious to most of you (i'm rather new with the phantom 3) but my understanding of the latest fw is to limit throttle when the voltage gets lower to prevent this. this is better than nothing but my recommendation would be for dji to do the following (maybe they already do some of these?):
1) build a rudimentary watt meter into their hardware of the battery to measure amp usage. since you know the starting amps, you should keep tracks of amps used to determine whether you are at 10%/30%/etc. stop trying to guess with voltage.
2) remove any type of hard limit at any voltage (3.0v). this does help protect the battery from damage but falling out of the sky doesn't seem like a reasonable alternative.
3) power will naturally reduce with the same throttle position as the battery depletes due to lower watts as the voltage goes down. don't let users compensate by throttling more aggressively. adjust throttle limits via amp usage.
4) be more conservative with battery power - currently they charge to 4.3v/cell and discharge down to close to 3.0v/cell. charge up to 4.2v and down to 3.4v and you won't see that much loss in range but the battery will last much longer.
until dji makes these types of changes, as users we can do the following (mostly what dji already recommends):
1) standard stuff like update to the latest fw, charge to >90% for each flight, don't go below 30%, etc.
2) prevent drastic voltage sag by not going max throttle if the battery is lower than 70%
Yes. It stores logs on your mobile device and on a non-removable memory card inside of your Phantom too.Does the DJI app record the logs automatically
You can fly full throttle. Just keep an eye on the battery voltage.Someone advised to not to fly on full throttle when the battery power is under 70%.
It's a good idea to consider landing when the battery is at about 30% or 3.4V. You should certainly watch the battery voltage though to ensure it does not dip below 3.0V. Even if the battery is at 3.5V while hovering, it could dip below 3.0V if you put it under a lot of stress (e.g. a full throttle steep climb).If the voltage goes below 3,5V in a cold weather, how much time do I actually have to bring the drone down?
It could, but it's not likely. If you damage a battery, you should definitely dispose it.If the battery would get damaged, could it cause a fire?
Yes. It stores logs on your mobile device...