From black technology to super engineering

Ye Ming took over the remote controller which was changed from a game controller, and he quickly became familiar with the operation under Peng Xiaofei's introduction.

"The remote sensing module is not bad, who adjusted it?"

"The captain is in charge."

Ye Ming glanced back at Captain Li Dongsheng, and saw that Li Dongsheng and the vice-captain Jiang Yongliang, who was in charge of structural design, were discussing something seriously in front of the notebook.

Peng Xiaofei smiled and said: "This is the only advantage of our robots, but RC competitions are now more and more inclined to be fully automated, unlike the Mecha Masters, which rely on remote sensing and operation, Captain Li's technology is buried. "

Ye Ming nodded: "Well...but you are not afraid to go anywhere with technology, aren't we also here to learn?"

"Having said that, I still want to get an award to protect my research." Peng Xiaofei was a little emotional, but also a little depressed.

He is Ye Ming's roommate. Although he has only been together for half a year, he also knows that Ye Ming has started the "student master" mode since the middle of the last semester-he stopped playing games, stopped reading novels, and even the novels I stopped touching movies, and ran to the library and self-study room every day, feeling like I was in the third year of high school.

As long as Ye Ming's learning state is maintained, Baoyan is a sure thing.

But he is different, and it doesn't mean that Peng Xiaofei is worse than Ye Ming - everyone went to the same school based on their college entrance examination scores, how much difference can they have?

He just felt that it would be meaningless if he was still in high school after he was already in college.

It can only be said that everyone chooses to spend their college career in a different way.

At this moment, Li Dongsheng waved at the two of them.

...

"Our team doesn't have enough manpower." Li Dongsheng looked at Ye Ming with a smile: "Ye Ming, you just said that you plan to study software engineering, so have you learned Python in advance?"

"Learned." Ye Ming was not humble, but nodded directly: "C, C++, and Python are a little bit."

Li Dongsheng was obviously happy: "Okay, then the two of us will work on the upper computer. Xiaofei, you and Tao Zheng will work on the lower computer together, and take care of the control by the way, is it okay?"

Ye Ming and Peng Xiaofei looked at each other and nodded at the same time.

The so-called upper computer refers to a computer that can directly issue control commands, such as a personal computer. The lower computer is a system that executes commands, such as PLC, single-chip microcomputer and so on.

For example, if a computer is connected to a printer, then the computer is the upper computer, and the main control chip system of the printer is the lower computer.

The upper computer in the team is naturally the notebook in everyone's hands, and the lower computer is the robot's STM32 single-chip microcomputer.

"Ye Ming, let me introduce you while I have some time."

Because Ye Ming didn't bring his notebook, Li Dongsheng pulled him to sit down in front of his own notebook: "Just now you and Xiaofei tried our robot, can you understand what's wrong with our robot?"

Li Dongsheng asked, but found that Ye Ming hadn't answered for a long time. He tilted his head in doubt, only to see Ye Ming staring at his screen with a rather weird expression on his face.

——On his screen, a certain frame of "I made a robotic arm that can play table tennis in a month" was paused.

This screen is the source code interface of Python.

"Haven't you seen this video?" Li Dongsheng asked curiously.

"Er..." Ye Ming suppressed his complicated emotions, and nodded honestly: "I have seen..."

It took him a day to edit this video! And it was cut very thinly...

"Captain, I think there may be two problems with our robot. One is that the visual robustness is low, and the other is that the obstacle-crossing function is not good." In order to prevent Li Dongsheng from asking about the content of the video, Ye Ming quickly answered.

Robustness is actually a transliteration of Robust (strong) - but used in the field of robotics, it does not refer to how durable the robot is, but refers to the ability to resist interference and emergencies.

Low visual robustness means that the robot cannot make accurate judgments if there is a slight interference from other objects, resulting in the failure of the task.

Snapped! Li Dongsheng slapped his thigh: "That's right! That's the two! That's why I want to see Brother Trumpet's solution." Li Dongsheng also looked at the computer screen while speaking.

——Brother Trumpet, this is the nickname given by netizens to the author of "I Made a Robotic Arm That Can Play Table Tennis in One Month", because this guy's name is very pleasing.

It's called "tick tick tick".

"It's a pity, this guy talked about open source, but he didn't move at all, and didn't even post a message." Li Dongsheng's face was full of regret.

Ye Ming's eyes widened when he heard it.

Feelings... Are you waiting for yourself?

At this time, the voice of the vice-captain Jiang Yongliang sounded next to him: "Captain, I don't think you should think about it, look at it."

Ye Ming and Li Dongsheng turned their heads at the same time: "What's wrong with Zhihu?"

"Brother Trumpet is on the hot list."

...

...

Zhihu, a question-and-answer platform for sharing knowledge. In the early years, there were a large number of respondents such as "earning a million a year", "people in New York, just off the plane", "my TOP3 university", "my job in the top 500" and so on...so it was nicknamed Bhu.

B with B.

Ye Ming also has it in his phone, but he hasn't opened it for a long time.

Click on the hot list and slide down a few times, a piece of "How to treat the author's 'tick tick tick' of station B's mechanical arm work? Compared with the genius boy, who is more powerful? "The question immediately came into view.

Ye Ming felt his face heat up, and he quickly walked aside with his mobile phone.

This question has only been trending recently, and there are only dozens of answers, but the top answer already has hundreds of likes.

"See with what? See with your eyes.

After watching the video, the author claims to have completed a six-axis robotic arm independently in one month. He didn't show his face the whole time, and he didn't dub, so I won't talk about it. I thought he was shy. But no matter whether it is designing the PCB or coding the code, there is no process at all, just a display of the finished product.

Of course, he did not forget to take a picture of the machining process.

But here comes the question, does the robotic arm need machining capabilities?

It is said that the cyber thimble has raised him, let's say that the low-end version is handmade.

These days, there are no more shows. "

Ye Ming took a deep breath, his heartbeat started to speed up, and at the same time he clicked on the comment that should be answered.

Not surprisingly, there were more than 20 replies, all of which supported the respondent.

He gritted his teeth and continued to slide to the next answer.

"Related interests, a former member of the RC team of a certain 985 school, responsible for the electronic control part.

Maybe everyone has no idea about the function of "robotic arm playing table tennis". Let's put it this way, according to the accuracy and ability shown in the video, if you replace the table tennis ball with a badminton ball, then it will be the brightest boy in the 2015 National Robot TV Contest— —In 2015, the badminton robot of the University of Electronic Science and Technology of China also used the binocular vision of the human eye.

But please pay attention, the robot of Dianke is not a mechanical arm with six degrees of freedom! That's just an automatic program-controlled car with a three-axis robotic arm to swing a racket!

Therefore, I don't believe that the author can complete it independently in such a short period of time and surpass the mechanical arm of the badminton robot in terms of comprehensiveness. "

...

"Look, what I said before was correct, right?" Vice-captain Jiang Yongliang saw that Li Dongsheng also clicked on the Zhihu page, and smiled while leaning back on his chair: "I told you to let the bullets fly for a while."

Li Dongsheng frowned deeply, and after a few seconds of silence, he let out a long breath.

As a third-year student, he also messes with Zhihu, and he also knows that it is unbelievable to pretend to be coquettish on Zhihu, but the ones who slander people...

Generally speaking, there are two brushes.

In particular, some of the high praises are also well-founded.

He is also a member of the old RC team who has been playing games since his freshman year, and now he has taken over the duties of the captain, so he naturally knows how much engineering is required for what function.

Take the man who made the robot arm at Station B as an example. Although he used his spare time, he worked on it for four months. Don’t think that four months of spare time is no better than one month of concentrated time. Sometimes doing projects and debugging requires inspiration.

Not to mention machining, board making, and purchasing all of which require hard time.

Therefore, Li Dongsheng also felt that the trumpet brother could not have been made by one person, at least the related algorithms and codes would not be his original creation.

Otherwise, how did he say open source and not open it?

"Well, it's okay, if we can't learn from it, let's do it ourselves." Li Dongsheng quickly laughed, looked at the time and stood up: "Let's go, let's have dinner first!"

As the captain, of course he has to show his fighting spirit.

At this moment, a voice suddenly sounded.

"Captain, leave the visual positioning and trajectory prediction algorithms of the ball-throwing robot to me."

Li Dongsheng turned his head and saw Ye Ming walking over slowly holding his phone.

His face was a little red.

"Are you okay?"

Jiang Yongliang looked at this newcomer who had joined for less than half a day, with doubts on his face.

Although I know that this guy has the ability to explain math problems to junior students, but this ability of "being a problem solver in a small town" is really nothing in the field of engineering.

"I think... I should be able to do it." Ye Ming took a deep breath, and then exhaled slowly.

Seeing that everyone was looking at him at this moment, he suddenly became a little nervous.

"The trumpet guy you're talking about making the mechanical arm...is me."

——He came to the robot team not only for the mission, but also to use the resources in the team.

For example, the 3D printer on the side, and a series of tools and equipment.

Besides, that table tennis robotic arm was originally made by himself.

From design to code, from machining to assembly and polishing.

His family was originally running a workshop in the town!

Even without a system, he learned how to drive screws three years ago!

What is he afraid to admit?