Everyone knows, jellyfish meets everyone again.
Sadness is so big, happiness is so small.
Sui Zhongfei - ZEROTECH zero-DOBBY pocket drone evaluation everyone, jellyfish and everyone met again. Foreword: First of all, why buy it. As an old player of a drone, from the earliest unmanned drones to do it himself, to later into the DJI's wizard egg machine, and then to the later 2V +, then to 3A. Of course, more drones have played more than these, 100 million airlines, zero degrees of these have test-fly, churning 4, mavic imperial and Wu Shen also played, the flying friends plus the group also a lot of us to catch Jellyfish | Like25 Comments47 Favorites55 View Details My heart has no fluctuations, and I even want to laugh. My last article introduced ZEROTECH's zero-touch dobby pocket drone and gave it a very good rating. I even used it to name it. However, some things are not particularly praised, especially drones.
The legendary flag is that unmanned drones are not good drones.
I actually gloried in this article. I didn't expect my dobby to be blown up too. I might have bought a fake drone. No, I could be a fake or fake. This world is fake.
This is its sixth outdoor flight. The first few flights were skilled enough, and I also tried some difficult moves and everything was perfect. Just friends called out to eat together, before they were all flying, and finally there is a chance to install 13, of course, to bring my small aircraft.
This is the last photo taken before the plane crashed. Still, it was very controversial that it took a photo before it hit the wall.
At that time, the scene was like this.... The jellyfish had found a place that was still empty and open-air, checked all the conditions for take-off, such as battery power, GPS (then 11 stars), compass, and mobile phone. Electricity, signal interference. Everything is OK, take off outdoors. Everything was normal at the beginning and I did some different gesture adjustments. Of course there was a hovering photo. This 13 is still very perfect, especially in the face of the sister who did not experience the drone at close range, I can give 9 points, and my drone little stickers bonus, you can add 1 point, out of haha . Just when I am happy, ready to adjust the angle of flight to demonstrate the tracking and small video automatic shooting function, this is the drone sudden rapid flight to the glass wall, and so on, had reacted and hit the glass wall fell. Fortunately, the flying height is not high, probably less than 3M flying height, plus the installation of a protective paddle, the glass wall is not damaged, the drone directly fell, two arm fell out, the drone did not fall Fragmented. Did not hurt passers-by. Fortunately, it flew toward the glass wall. Instead of crossing the street and the street, it did not climb as quickly as my original 2V+ and eventually disappeared into the air. This left me a corpse.
I regret that I didn't take a picture according to the picture. Of course, drones are generally quite anxious. First check the condition of the drone.
Two arms fell out without breaking. One arm is normal and the plastic part of the other arm is deformed. After the two arms were plugged back and taken off, there was a "magnetic failure, please contact the aftermarket."
Asked in the group, said that recalibration could solve the problem. Several calibrations at Seaport failed. Finally, they took home and actually calibrated.
Attempt to take off and found that the right forearm motor can not start, so stop trying, it should be the motor connection wire off or broken, no longer try to avoid burning the motor, of course, this one should also be able to solve, not a big problem. However, as a drone, the safety issue was still the first one, or it was decided to send it to the post-sale solution, and because it had not been played for several times, it was blown.
After sale:
Asked about the feedback time in the group, they said the time is uncertain. It is very simple to report repairs. Fill in the relevant information in the DO.Fun APP. You don't need to write emails. Of course you can also call for repairs.
Fault description, truthful detailed fill out on the line, to facilitate post-sale technical personnel testing. And APP can directly upload flight records. Although the drones are small, flight records are of course still available.
After the APP submitted the relevant repairs, he still did not trust, and he also called the official zero-degree intelligence control. Zero-intellectual control of the phone is actually a particularly good hit, scored on a 1. Pre-sale, 2. After the sale of two automatic jump to the artificial customer service, than some customer service phones do not know where to go. The connection is also very fast. It is not known whether there are fewer users with zero-degree intelligence control or less after-sales service consultation. It is also possible that there are more operators for them, and it is the second time to switch on the labor.
After switching to the customer service, the customer service is a man. I am very satisfied. Of course, the man said to me is easier to communicate. I probably consulted the question and asked if I received my application for repair. They said that Now, let me wait for the flight record analysis and give feedback, about three working days.
The next day, at 10 o'clock in the morning, I called and said that the flight data had been analyzed. I also asked me some detailed questions about the current and current drones, and gave me an after-sales return address. Download after-sales feedback on the official website, you can print or handwriting.
Originally wanted to print, and found that the home printer is not ink, the outside is too cold and do not want to print, and finally hand-written with the drone.
After the sale that only need to send bare metal, no battery, so SF Airlines, the result did not actually work on Saturday and Sunday after sales. As early as I did not send SF, so expensive.
After the signing of the after-sales service, the speed of their inspections and repairs was alarmingly fast. At noon the next day after the signing, they called and said that the aircraft had been repaired and listed the replacement parts. Well, it should be sure to return. It was not my original airplane.
And inform me that I may ship the product in the afternoon or the next morning, when the shipment will be specifically contact me.
On the morning of the next morning, there was a customer service call and I said that the repaired drone had been sent to me through Zhongtong, and gave me a single number.
Everyone thinks that this sale will be finished, but it is not. In the past, although these processes were all on the phone (I didn't like to make calls, the phones were basically muted, and I called them all by fate, I also specifically turned the sounds on during this time), and I didn’t email. Contact me by customer service. However, the attitudes and methods of the various kinds of after-sales efficiency that have solved the problem are very satisfying to me, and the maintenance is all free of charge, including the replacement of parts and labor, which is less than where DJI does not know where to go.
But after these few days, it made me more uncomfortable. The customer service gave me a single number. I couldn't find the logistics. I didn't even record the receipt. This made me anxious, because I was just about to pass the New Year and I was worried about Zhongtong. Stopped or lost the items, call the customer service, customer service verification, said that the single number is not wrong, but also really sent out, of course, wait patiently.
Because before that, there was a friend who had sent a friend from Beijing and sent it for a week before sending it to him. The middle few days had not moved. At that time, he called Zhongtong Customer Service. Zhongtong said that the fog was too late.
I thought of this and went to look at the weather in Beijing. The air quality is bigger than ours. Xi'an does not know where I am going. Ah, how can it be hazy? This is also more worried about my delivery.
In the two days that express delivery could not find records, zero-degree intelligence control sent me a two-day phone call to allow me to wait patiently. They also tightened verification.
At the end of the third night, I finally found the record of the accessories, and then waited for three days and finally received the express delivery.
The Zhongtong Express from zero-degree intelligence control is strongly recommended to be replaced by Yuantong or SF Express.
Unpacking:
Plastic foam protection, express box and bubble paper are new and different from what I sent.
The manual and other manuals replaced me with a new one.
The drone had just gotten, basically no difference with the new one, changed the full set of shells, arms, flying paddles, motors, mainboard... Well, it should not be the plane I sent back, the stickers on the back are also changed The feeling of a set is brand new.
A new aircraft.
The maintenance staff called me and said that I also included a new set of silent paddles. I couldn't find them in the box. It should have been changed for me. The original set of paddles was a little worn and bleak. It can still be seen. This is a brand new flying paddle. However, the silent paddle looks as if it is not different from my original one.
Pretend to be a brand new small aircraft. However, it looks like it is a new one, but after-sales service is repaired.
The SN code and the UAV WiFi name are also brand new.
After the aircraft was inspected, everything was normal and it was ready to stick back to my original membrane. Before sending it, I thought that I might change or replace the shell, so I tore the film off. Buy this treasure to buy this film can be unlimited tear, it is still very good.
membrane...
Oh, it turns into a small airplane.
By the way, it looks like it's a brand new airplane, so you're wrong. When I first received it, I also felt so convinced that how good the maintenance was, how it became new.
Everything is brand new, from connecting airplanes to activating airplanes to updating firmware.
Naive, when I opened the album, I found that there were photos. Well, not a big sister or a young lady, it's a bearded uncle. Frightened me, I thought it was a test that they had repaired or renewed. The result was not a correct one. It can be determined that the motherboard should be recycled or sent to the repaired inventory. Then this is the legendary official turning machine slightly, but it does not matter, people also say that maintenance, not new, let alone basically all new.
Asked a former UAV drone employee and said that this situation is normal, especially for free repairs, if not for money. Of course, this is understandable, but still hope zero protection of the user's personal privacy, or should do a good job of formatting the data.
In general, the zero-scale intelligent sales are still in place and satisfy me. I remember that my previous 2V+ lost control and lost to DJI flight records, DJI's solution is to buy 10% off the new machine. Of course, the maintenance cost and the part cost of the DJI bomber also know that the price of the drone is quite expensive.
The zero-degree intelligence control official's analysis of the flight records gave my results that the GPS was disturbed and that the aircraft actually experienced drift and runaway records.
My personal analysis: There are five reasons.
1. Glass wall interference
At the time of the flight, the large glass wall of Xi'an Port Shopping Center interfered with GPS.
UAVs usually rely on GPS satellite positioning, with various sensors to achieve autonomous hover. However, in a high-rise CBD, due to the reflection of GPS signals by the glass curtain wall, positioning is inaccurate and even the positioning is disordered. Therefore, operating drones in these areas is likely to cause unexpected situations such as drift and flying. And these high-rises usually have a lot of messy radio signals (such as various wifi), and the control interference to drones is quite obvious.
2. Reasons for location
Xidi Harbour is very close to the Xi'an Municipal Government, but I think it is unlikely because there was no problem with flying the DJI elf in the City Sports Park (across the road from the city government).
3. Shopping center CBD signal interference
The complex signal interfered with the drone. There is also electromagnetic interference, and the interference to the drone's compass is also relatively large.
4. Too close to the steel foundation of the mall building
5.dobby had a bug on his own
This is nothing to say. Even a professional drone god can only say that accidents such as blows are avoided, but it cannot protect 100% of the drones themselves.
Drones must fly:Frying machine is something that every drone player does not want to encounter because the money and time loss caused by explosives is difficult to estimate and it is also quite troublesome. It is more likely to involve the loss of third parties (wounded or injured people). To be safer when playing drones, besides checking your battery GPS compass for each drone before each flight, you must also remember the danger zones in the following dangerous zones and try to avoid flying in these places.
1, the airport
Drones are the natural enemies of manned aircraft. If drones break into the flight range of the aircraft, they will seriously threaten the safety of the aircraft and passengers above it. We must strictly abide by the ban on flying drones in and around the airport. At present, many unmanned aerial vehicle manufacturers have added flight prohibition information to airports and major sensitive areas in the UAV firmware. Once the UAV detects that it is in the no-fly zone, the motor cannot be started. Of course don't die to crack and try to fly.
2, high-rise buildings CBD
UAVs usually rely on GPS satellite positioning, with various sensors to achieve autonomous hover. However, in a high-rise CBD, due to the reflection of GPS signals by the glass curtain wall, positioning is inaccurate and even the positioning is disordered. Therefore, operating drones in these areas is likely to cause unexpected situations such as drift and flying. And these high-rises usually have a lot of messy radio signals (such as various wifi), and the control interference to drones is quite obvious.
Therefore, if you really want to operate drones in the CBD area, try to find a relatively empty place to take off and try to avoid flying between buildings.
3, where people gather
In order to avoid causing very serious third party losses. Imagine a drone who lost control of explosives and blew it up on the ground. The only thing that was lost was the drone itself, and if it was bombed by a group of people, it was very likely to cause casualties. Drone's motor is still a big hazard, take a look at it
Therefore, try to avoid flying above the crowd. If you really want to shoot the crowd, please fly away from the edge of the crowded area and try to stay away from the crowd.
4, high-voltage line
Electromagnetic interference generated by high-voltage wires is very obvious, and the closer to the wire, the greater the interference intensity. In addition, drones in the air, through the image transmitted back to the screen, it is relatively difficult to find high-voltage lines, but also to observe the drone with the naked eye, it is more difficult to determine the distance between the high-voltage lines, hang to the high-voltage line naturally It is also difficult to avoid.
Therefore, the high-voltage line really should not be close, far enough to beat it (in fact, try not to shoot it).
5, mobile phone base station
Compared with the high-voltage line, in fact, mobile phone base stations are more likely to be ignored by us, because it really does exist around anywhere, and it appears more subtle. Mobile phone base stations also emit radios. Interfering with drones naturally does not require suspicion. The mobile station is more likely to interfere with the remote control signal between the UAV and the ground.
Mobile phone base stations are generally built on the roof of a house in the city, so it is good to avoid these locations during flight. If you find that the distance of the remote control is significantly shortened during operation, first observe whether there is a mobile base station around.
6. Where many people fly kites
It is said that drones are the natural enemies of manned aircraft, and the natural enemies of drones can be said to be kites. The long line of the kite flying is basically invisible. If the drone is touched on this line, the motor and the propeller will quickly roll up the kite line, and the drone will affect the flying attitude of the drone. Locked directly to the motor, the drone crashed and the machine ended.
Basically, drones are unobtrusive when it comes to kites. The value of kites and drones can be measured. So, if you see someone flying a kite, you must not go bustling, or change your place.
7, indoor without GPS signal
High-rise buildings will affect the reception of GPS signals by drones. In indoor areas, GPS signals are basically not available. At this time, the autonomous hovering and positioning of drones is basically useless (of course, indoor stable flight, positioning with optical flow). , visual positioning of the drones do not have to care about). If there is no support for the above hardware, then the operator's control level is very demanding. If there is little carelessness, there may be situations where the drone drifts and hits the wall.
8, strong wind zone
The UAV flies in the sky, relying on the thrust produced by the propeller-driven under-wash flow, and when the environment is windy, it is necessary to allocate a certain downward power to turn into the lateral power to offset the influence of the wind. When the environmental wind is large enough to exceed the remaining reserves of the drone's power system, the drone will naturally not be able to maintain its current fixed point and will be blown away by the wind. Therefore, under strong wind conditions, drones are difficult to maintain accurate positioning, and even it is difficult to maintain a relatively stable posture, extremely prone to accidents.
Basically, the larger the drone body size and the higher the power system reserve, the higher the wind resistance. If you are playing an ordinary commercial-grade drone, do not fly it at a level above five.
9, reinforced concrete ground
The "rebar" concrete should be highlighted here. Pure concrete is fine. It may be that many people did not find that when the drones were placed on the ground, the system showed no reason for the “compass being disturbed.†Obviously, there were no metal objects around. Where would the compass interfere? In the flat ground below the machine, concrete with a reinforced concrete structure was used for watering. Reinforced metal objects of this type interfere with the drone's compass work.
If the next time you find a place where the compass has been disturbed for no reason, please take a look at the possible change of departure point.
10. Tower
This tower is similar to the above reinforced concrete. It is also a metal object that interferes with the work of the compass. Do not think that metal objects will not matter if they are not magnetic, and it will affect the work of the electronic compass (compass).
So, if you want to fly close to the tower, remember to be ready to stay away.
11, iron ore
Iron ore is also a place that can interfere with the work of the drone compass. The huge, hidden metal is below the ground. If it is an iron ore that has not yet been mined, it is even harder to find.
If you want to go to the mountains, you can ask the locals before departure. What types of rocks are around the mountain.
12, away from the water surface of the coast
On the coast, the general wind power is not small, but in the air outside the coast, the wind is greater. Small drones fly in these environments, and the strong wind environment to be faced with is still cautious. It is not like the rich Amazon's The Grand Tour.
13. Military facilities
Because military settings are relatively sensitive, they must never be approached. In addition, the power of military radars is generally relatively large. If they are scanned at close range, the sensors on the UAV may be damaged, and they may be swept away at a little distance. Interference will occur. Do not die.
Before the drone will fly check:In addition to the venue, each part of the drone's flying paddle, motor, battery, flight control, GPS, and compass is very important. It should be checked again and again before each flight to make sure that all drones are normal and fly again. Especially during the winter flight, if the weather is too cold, do not fly, the battery will appear power-down situation, from time to time to return to landing, while hitting the wall crash.
There are also the characteristics of drones themselves. Even if they are really bombed or thrown away, they shouldn't be too distressed (can you feel bad? That's all money). Of course, you must be psychologically prepared and have a good psychological quality. .
Finally, I wish you all good luck. Drones fly and cherish and strongly condemn any drones that endanger public safety and endanger the safety of others. This should not be the capital of your show. I wish everyone can fly
In the end, see here not to walk away. Welcome everyone to pay attention to this jellyfish. The handsome and beautiful lady sisters are all paying attention to oh~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Happy every day, all wishes come true, I wish all flying friends can fly, do not fry. Welcome to reward and lose coins, favorite comments, continue for a second ~
End.
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