At this stage, the performance of digital equipment is a huge magnitude, but the rope around the neck is the battery.

The noble kidney machine also has a nightmare of three charges in one day. A power bank like a urine bag was once a necessary equipment for many people to carry with them.

After flying for about half an hour, the elves had not yet fulfilled their appetite, and Nehbert's power was only one-quarter of it, close to the dangerous power.

After he issued the order, Nehbert began to return automatically, almost landing at its takeoff position, and the rotor quickly stopped rotating.

The elves looked at it again without any contempt or doubt, but full of envy and amazement.

Because Wei Kang has high requirements, it is necessary to ensure that the drone is always hovering over the head during field inspections, so it is luxuriously equipped with several sets of spare batteries for rotation. Anyway, this is the funding provided by Binhai University, and this requirement is very reasonable and not overdoing it.

Zhang Zian replaced Nehbert with a spare battery, worried that its internal parts would overheat due to continuous flight, but they waited for a while, but in fact they were just a little warm.

Taking advantage of this time, he took out another device to attract the elves' eyes.

"What is this?" they asked one after another. With the experience just now, they dare not underestimate these unstable technological products.

"This is an infrared trigger camera that I asked Professor Wei Kang for. "Zhang Zian explained: "It is said that this thing can take photos automatically. Once a warm-blooded animal or a moving object passes through the lens, it will automatically press the shutter to take photos."

Although this thing is rare, it cannot arouse the interest of elves like drones. What is the difference between taking photos by people and automatically taking photos by cameras?

Zhang Zian patiently explained his thoughts.

When he saw an infrared camera in Wei Kang's office, he immediately had corresponding concerns whether this thing could work for invisible elves?

After learning the principle of infrared cameras from Wei Kang, he was even more worried because infrared cameras were designed to be standby time and night in the wild for a long time, and could work normally in both day and night. It is easy to say during the day. Even in the dark night, once a warm-blooded animal or moving object is detected, the light-emitting diode will emit a faint red light and take a picture of the target.

So, if the invisible elves pass by in front of the camera and trigger the camera's sensor, causing the camera to take photos automatically, will the elves be photographed?

Even if you can't take a photo, it will make the scientific expedition team think that a supernatural incident has occurred, causing panic.

As for the camera being broken, it is unrealistic, because the scientific expedition team has brought many cameras of the same type, so it can't be broken at the same time, right?

So, he borrowed an infrared camera with a stern face and planned to try it in advance just in case.

Only then did the elves understand his intentions.

Lao Cha volunteered to let Zhang Zi'an steal it, then walked past the infrared camera in stealth, and walked back and forth several times at different speeds.

Zhang Zi'an took out the memory card of the infrared camera and inserted it into his mobile phone to read it.

Fortunately, the memory card is blank, which means that the camera's sensor has not detected the invisible elf, so it puts my heart back in my stomach.

His concerns were evaluated by the elves by polarized evaluations. Lao Cha praised him for his meticulous thoughts, and Snow Lion scolded him for his mother-in-law and mother suspicious...

Putting away the infrared camera, he touched Nehbert's shell, and it was already cold, so he was ready to start the second round of tests.

The first round was simply testing the flight status. This time he changed to a new test method, switched to the follow mode, allowing Nehbert to target himself and keep hovering over his head. This is a simulation of the situation during the field investigation.

"Xinghai, are you ready to be defeated by me? Now it's time to end your long-term victory record!"

Everything was ready, and he confidently challenged Xinghai to play hide-and-seek, and was not ashamed of being cheated.

"Meow~ I'm ready!"

Xinghai was already eager to try it out, and couldn't wait to try several hiding places that he had just seen from the air.

"Okay, I'm going to start counting this time, but I count with my eyes closed! 1,2,3..."

He closed his eyes tremendously, not hiding his behavior of peeking while counting.

"Meow~ Rare! It counts too fast!"

Xinghai kept complaining, his voice became erratic, and almost instantly went from near to far.

After more than half an hour of tossing, the elves who got up early were a little hungry. Fina just saw through the drone that Mr. Li had already delivered breakfast to the pet store and hurried back to the store to have a meal. Of course, the Snow Lion followed suit. Lao Cha and Feimas liked to eat hot food, so they went back to eat first. The stray cats returned to the green space one after another, and Vladimir got some fresh news and information, and had something to deal with, so he left for the time being.

Richard didn't leave, anyway, he didn't need to eat hot cooked food, and he could urinate and defecate anywhere.

"98,99,100! I'm going to start looking for you!" Zhang Zi'an finished counting 100 numbers very quickly and opened his eyes.

He gave Richard a look, meaning to ask where Xinghai ran to, but only Richard rolled his eyes.

"Gaga! You idiot! I think having a drone is omnipotent? Anyway, in my opinion, drones are not as good as unmanned chickens!"

Anyway, Zhang Zian didn't expect it. He turned back the video he had just counted through the remote control screen, which was already blatantly cheating.

However, Xinghai's movement was too fast. He stayed in place in the first second, turned around in the second, and disappeared in the third second.

exo_me?

It seems that Xinghai has finally become serious for a long time.

Zhang Zian did not admit defeat so quickly, and he began to play the video frame by frame.

The gimbal camera equipped with a drone can record 4k videos at a speed of 60 frames per second, which means that it can record 60 moments with a snap of your fingers.

Unfortunately, he looked at the 60-frame picture and still did not see the disappearance of the starry sea.

There is at frame 30, and the 31st frame disappears.

It seems that it is time to give feedback to the manufacturer and provide them with a lower clarity but higher frame rate recording mode, such as 1080p/960 frames?

But he doubted from the bottom of his heart that even if it was increased to 9,600 frames, could it be captured by Xinghai’s actions?

He searched around the big and small green space for two times, startled countless insects, and fell all over his head and face, but found nothing. In the end, he had to admit defeat because the clerks had already started working and he could not continue to waste time here.

"Forget it, Xinghai, I'm not prepared enough this time. I'll give you a game!"

He doesn't lose, he is still stubborn.

"Meow~ Win!"

Xinghai suddenly emerged from somewhere, cheering for victory.
Chapter completed!