Qin Shuai found that Chu Tianying seemed to be a little suspicious of this object, and he didn't know if it could play a monitoring role.

He pointed to a courtyard wall and said, "Don't underestimate this little toy-like thing, I know you may doubt its function, now let's go to a nearby place to try it, and I will tell you how it works, so that you can understand its practicality." ”

The two immediately climbed over the wall and went out of Liu's house, and when they arrived at an open lawn, there was no one around, so Qin Shuai started the small machine, and soon it rose into the air, looking no different from a drone, but it was a toy-type plane, which made people not vigilant.

Qin Shuai took his mobile phone and told Chu Tianying that this was the hidden multi-function remote control he had set up.

"This guy is small, but it's full of features, I'll show you what kind of construction it is. In fact, it belongs to the rotary-wing drone...... The power system has an electric motor, which is a small quadcopter UAV with a wheelbase of about 250mm, and most of them use a motor of about KV2000 (with 5-6 inch propellers). ”

"Electronic governor is used to drive brushless DC motors, and the more important parameters are working current, refresh rate, and weight. The ESC connection board is essentially a power distribution board, which is used to simplify the electrical connection between the battery and the ESC, and between the ESC and the flight controller, and can avoid repeated soldering during wire disassembly and assembly......"

"Looking at the propellers, the matching of the propellers and the motor is mainly considered from the two aspects of frame size and whether it can provide enough power."

Chu Tianying: "Is this rechargeable or battery?" ”

Qin Shuai: "Battery." Almost all quadcopter drones use lithium batteries, mainly considering the capacity of the battery, the discharge rate, and its own weight. ”

Chu Tianying: "I don't know much about drones. I've only heard of the support and appearance system, can you tell me about this? ”

Qin Shuai: "The support and appearance system, which can be interpreted as a rack, refers to the carrying platform of the drone, and all the equipment is carried by the rack to fly into the sky, so the quality of the rack of the drone largely determines the service life of the drone." To measure the quality of a rack, it can be examined from the aspects of sturdiness, ease of use, and reasonable installation of components. ”

Chu Tianying: "I know one thing, most of the common UAVs now refer to the form of multicopters, and the composition of the frame is similar, mainly composed of a central plate, a force arm, and a tripod, and the structure is simple. ”

Qin Shuai: "...... The number of axes of multicopters starts from two axes to more than ten axles, and the common ones are mainly 4, 6, and 8 axes. The more axes, the more propellers, the greater the load on the frame, and the more complex it becomes......"

Qin Shuai remotely controlled the plane around the grass, flew it twice and then let it land.

Only then did Chu Tianying realize that its flight was no different from a real helicopter, not like an ordinary toy airplane, rickety, but very stable, and there was a small camera inside. There is still a Bluetooth setting, Qin Shuai immediately turned on the mobile phone, and the picture just taken and the video of the two of them were displayed on it, which was very clear, and it turned out to be high-definition.

Qin Shuai: "Look at this, there is a flight control system." The control system of the quadcopter is divided into two parts: the flight control system and the brushless DC motor speed regulation system. The flight control system consists of gyroscope sensors and acceleration sensors, detects flight attitude, and communicates with ground remote sensors through wireless communication modules. The speed regulation system bus of the 4 brushless DC motors communicates with the flight controller, and changes the flight attitude through the speed of the 4 brushless DC motors, and the whole system is powered by low-voltage batteries. ”

Chu Tianying listened to Qin Shuai's explanation with admiration, the little doubts about him before had disappeared, it turned out that he was an unfathomable person who knew a lot of assembly knowledge.

It's no wonder that this thing has been researched and developed into this state, and it doesn't make people suspicious.

He immediately took his mobile phone, and Qin Shuai passed the operating system to him, so he copied it, and the two of them remotely controlled it, flew into Liu's house, and soon hid in a corner.

Because the Liu family has a big business, there are also children, often buy some toys, so many years, buy a lot of toys, they can't remember which children's toy, so this thing, flying over the Liu family, no one doubts.

Chu Tianying: "The power of this thing and its shooting clarity are what I need, thank you very much, if this case is solved, I will get a bonus, and I will buy this thing at that time, this is temporarily borrowed by me." ”

Qin Shuai: "What are you polite to me?" Although it is the first time we have met, I have a feeling of familiarity at first sight, you can keep my mobile phone number, and if you have time in the future, please invite me to drink some coffee and tea. ”

Qin Shuai said this and immediately took his leave, Chu Tianying looked at his back, for some reason, he wanted to scan and read Qin Shuai's data, but the scan was not clear, unlike others. It seems that Qin Shuai still has a power in his body that is beyond the scope of his reading ability.

Chu Tianying thought: "I don't know if this person is an enemy or a friend, generally there is this kind of mutual restraint power to repel the power, it should be the enemy, but he is very friendly, it seems that this person will be on guard in the future, and make friends at the same time." ”

He found that the star runes designed by Qin Shuai turned out to be very simple words, but just now he revealed in front of Qin Shuai that he could read them, hoping that Qin Shuai didn't notice it, because normal people couldn't find out that he had this kind of ability.

He followed the wall of Liu's house and approached the previous room, which was the safe with the gold number, there were a few soldiers wandering around, all of them were subordinates of Liu Tianxing's father, who looked tall and majestic, if he went inside alone, I am afraid it would be difficult, and Qin Shuai had already left and could not help, and people must have his affairs at the headquarters of the Alliance Army.

Rely on his colleagues? Colleagues often look down on him, so they won't help, and it seems that this time it's up to his own wit.

His mobile phone suddenly rang with a prompt sound, because it was equipped with Qin Shuai's software system, so if there was interference or a suspicious target was found, this display would send out a prompt tone.

What did this little plane capture?

He immediately clicked, and it turned out that it had photographed a child, who thought it was his remote-controlled plane, so he jumped to catch it, but the small plane flew higher and higher, and the child almost cried.

Chu Tianying couldn't help but laugh when he saw it: "Really, I can't shoot useful pictures, what are you shooting?" That's it, and give me a hint. ”