Although there were many questions in his heart, Li Shan couldn't ask directly, so he had to sit on the side and wait patiently.

Mr. Liu was talking with Li Shan on the side, he was very curious that Li Shan could have such a graphene battery in his hand, and he also wanted to know the origin of Li Shan, so he had a little more tentative taste in his words, but Li Shan was no longer a rookie, so he went around in circles with him, and the words he said seemed a little ambiguous, and he was very depressed, thinking that this kid should not look old, but he was so tactful.

So, he no longer bothered about this matter, and was idle with Li Shantian. After a while, the waiter surnamed Zhang knocked on the door and came in, and he put a large bag of things on the coffee table, saying that the money had been prepared.

Mr. Liu said that he had worked hard, and then said to Li Shan: "Little brother, the money is ready, you can count it." ”

Is this bag full of money?

Li Shan looked at such a big bag of things in front of him, and was a little stunned for a while, in his cognition, the volume of so much money should not be so big, could it be that they gave money in small denominations?

With such a question, Li Shan opened the bag of things, and when he looked inside, it was all red hundred-yuan bills. There should be hundreds of thousands! Are they mistaken?

Seeing Li Shan staring at him in a daze, Mr. Liu opened his mouth and asked, "Is there something wrong?"

Li Shan came back to his senses a little at this time, he had some wood in his head, and shook his head mechanically, he counted the money, there were thirty-six stacks of the whole bundle, and there was also a part of the dismantled money, that is to say, at least three hundred and sixty thousand!

After pondering it in my heart, I somewhat understood, when I bargained with them before, I was comparing with my fingers, and it seemed that I was bargaining, but in fact, there was an order of magnitude difference, and both sides misunderstood what the other party meant, and those who broke up the money were the money from the sale of crossbow arrow launchers, thinking of this, Li Shan couldn't help but smile.

He put the money back into his bag, zipped it up, and then stood up and said, "Yes, that battery belongs to your store now, and since the transaction has been completed, it will be left for a short time." ”

Mr. Liu smiled, also stood up, stretched out his hand and said: "Happy cooperation, I hope that my brother will give priority to our store next time if he has any good things." ”

"Definitely, definitely. Li Shan shook his hand and walked out of the store perfunctorily.

Walking on the street, he can feel the heavy feeling brought by the backpack, which is completely different from the feeling brought by the cold number in the bank account, which makes Li Shan feel very fulfilled.

It seems that for the value of this special battery, I still underestimate it, maybe the value of this battery is far more than this, is it a loss?

Li Shan thought helplessly, but the transaction was completed, and besides, didn't he get 350,000 all of a sudden, he should be content, at least he could alleviate his financial constraints.

Li Shan was not in a hurry to leave this street, he still had one task to complete, that is, he still had some goods to purchase. The goods he purchased had already made some lists, these items were all generic components, and they were all clearly priced, and the prices in each store were basically the same, so Li Shan didn't want to buy these things in Liu's general store, so as not to let them see something.

The shops on this street sell similar types of items, and there is not much difference between them, at most they sell different brands, and Li Shan is also a burden carrying these heavy bills, he wants to deal with his own affairs as soon as possible, so he can reduce the burden a little, so he casually entered a store that looked larger.

There are not too many customers inside, and the clerk is only a young man, who is talking to a customer-looking person, and when he sees Li Shan entering the store, the clerk very politely asks Li Shan to take a casual look.

Li nodded, and slowly looked along the glass counter one by one, walked around, and then happened to come to the clerk and the customer, the customer stopped talking, and seemed to mind that there were others next to him when talking about business, he glanced at Li Shan very vigilantly, and then said directly to the clerk: "I hope your store can hurry up, it is best to deliver within a week." ”

The clerk patted his chest and said: "Please rest assured that this is not the first time you have dealt with our family, when has our store dragged you back, I promise that it will not delay your business, you can rest assured." ”。

The customer said, "Well, this transaction is very important to me, and I hope you will take it seriously. The customer seemed to be a little uneasy, repeatedly admonished, and the clerk smiled and promised to deliver on time, and then sent the customer out of the store, when the clerk returned to the store, Li Shan showed a somewhat apologetic expression and said: "Let you wait for a long time, our other clerks will go to help the owner's house, so I am the only one left, and I hope to bear with me if I am slow." ”

"Nothing, here's a list of some things I need, please take a look. Li Shan didn't mind, he handed the clerk a list he had with him.

"The gyroscope should be 3-M, and the engine is German 56IB2......" the clerk read into the list. Then said to Li Shan: "It seems that Mr. wants to assemble the third generation aircraft, most of these items are available in our store, but some things are more special, although we don't have them in the store, but you can transfer goods from other stores, it will take a while, if you are willing to wait, then I will arrange the transfer of goods, if you are not willing to wait, then we can only provide you with the existing things in the store." ”

Li Shan didn't want to run anymore, where to buy it is basically the same, it is best to be able to complete all the goods in this store at one time, so he said: "If your store can be equipped with the best, but you must ensure that it is a genuine manufacturer, as for the price, it is not a problem." ”

"Please rest assured, we are also a long-established store for many years, and this reputation is still guaranteed. The clerk listened to Li Shan's breath, and hurriedly made a guarantee, he asked Li Shan to wait, and he made a phone call and began to contact the source of goods.

Taking advantage of the clerk's call, Li Shan began to wander around the store, looking with interest at the strange and varied electronic components in the glass counter.

Although he spent some time in the joint maintenance department of the summit, he still did not know much about many of these electronic components on the market today.

It is no wonder that now the technology of drones is developing rapidly, and many corresponding supporting components have been continuously developed for a variety of different purposes, which makes Li Shan feel that if he does not keep an eye on the trend of development, he really does not know what stage the current level of science and technology has developed.

At this time, the clerk has already notified the information, and now it is waiting for the delivery to the door. At this time, there were no other customers in the store, so he accompanied Li Shan, introduced the items in the counter, and saw that Li Shan was very interested in one of the obstacle avoidance systems, so he said: "This is a composite, machine vision obstacle avoidance system, this technology includes video cameras, radar sensors and laser rangefinders to understand the surrounding conditions, the system can be in the front, back, left, right and next a total of 5 directions for obstacle recognition, and the content of the recognition is divided into two parts, namely ultrasonic and machine vision."

In other words, in addition to the conventional ultrasonic module, cameras are specially placed in the five directions to acquire visual images, which are then transmitted directly to the on-board processor for computational processing. Composite obstacle avoidance systems can help more commercial use cases related to the Internet of Things, such as indoor enclosed places. In the indoor GPS for positioning can basically be avoided, in the underground parking lot the lighting conditions are generally not very good, and ultrasonic and machine vision combined, can be almost at any illumination for a variety of materials for better identification, so as to provide better guidance for the flight of the UAV in a closed environment, the effective range of recognition can be significantly improved, and the accuracy can often reach the centimeter level. ”

The clerk said very seriously, he already regarded Li Shan as a big customer, and being able to sell a little more items would be of considerable benefit to his performance, so he spared no effort to introduce it.

"This is our company's independent research and development of the TR24DCA100 system, it is divided into ordinary version and enhanced version, the ordinary version is very sensitive, can detect 1cm cable-stayed wires, 10cm trunk of small trees, 1.6m high people and 20cm poles at a long distance, for high-speed operation of the drone to play a good obstacle avoidance function, very suitable for drones in the complex outdoor environment operation.

The system uses digital beamforming technology, so it has a wider field of view. It's not really phased, but it's good enough for excellent resolution, and the angular resolution is industry-leading, allowing it to easily detect more objects than most of the other technologies we've talked about before.

The enhanced version is a 24GHz terrain-following radar, which has a detection distance of more than 50 meters compared to ultrasonic or binocular camera height measurement technology, and can work stably in strong light, high temperature, fog, dust, wind and dark night environments, with the advantages of all-weather work.

The processors used by our company have the characteristics of low energy consumption and high performance, and our company uses this as a starting point, such as the Yuneec Typhoon H with Intel processors, the GUIDANCE accessories with DJ Matrice 100, and the zero-degree XPLORER 2, Tencent Ying, DJ Phantom 4 and other products with Qualcomm Snapdragon processors.