I Became a Genius Engineer

Founding club president Lee Cheol-woo (1)

After a while, the digital logic circuit class started again, and the professor gave a paper test as scheduled.

However, the paper test method was spectacle.

“Now, everyone, do you have a notepad or notebook? Get out and tear a page.”

The students in the class obediently followed the professor’s instructions. I also tore up a page of my notebook.

“Last time you learned about AND gates, OR gates, and NOT gates. Now combine them to make XOR gates, NOR gates, and NAND gates.”

After the professor said that, he drew the logic circuit truth table for each problem on the blackboard.

Well, so XOR is an exclusive OR, and NOR is the inverse of an OR gate, so we can do this.

At the same time as the professor wrote the truth table, I also wrote down the answers in my notebook.

The problem was easier than I thought.

‘hmm… … . what to do with this now? When are you submitting it?’

I’ll have to keep an eye on it for a while.

“Professor! It’s too difficult. These are the things I didn’t learn last time?”

“I didn’t learn what I didn’t learn, I learned everything.”

“No, last time you only explained the AND gate and the OR gate.”

“They explained the NOT gate as well.”

“I see. You didn’t explain things like XOR.”

“know.”

“……? Then how are you going to take the test?”

“Do you know what kind of memorization course this is? It’s just a logic circuit. Think logically.

It certainly wasn’t memorization. We had to combine the things we taught last time to come up with our own circuit diagram.

Changsoo was solving the problem as it was, and everyone else was having a hard time.

“I am Professor.”

Meanwhile, I called the professor.

“If you’re going to say something useless, don’t do it.”

“That’s not it… I’ve solved this problem, where can I submit it?”

“Huh? You solved all of them?”

“yes.”

“……? It’s not blank, is it?”

“no.”

“Come forward and submit.”

I went to the professor’s podium and handed in my answer sheet.

“uh…….”

The professor looked at my answer sheet while slightly lifting his glasses, perhaps because his eyesight was blurry.

“uh……?”

Professor Mansoo Choi looked at me for a while.

“I’ll go back to my seat.”

“for a moment.”

“yes?”

“What’s your student’s name?”

“I’m Lee Cheol-woo.”

“…… Um, student. Are you thinking of starting a startup club?”

What kind of nonsense is this all of a sudden? Entrepreneurship club What else is that?

“yes?”

“Anyway, apply. Entrepreneurship club.”

“…?”

If you ask me to apply recklessly like that, I will apply without hesitation. Would you like to find out a bit? It’s an entrepreneurship club… … . I was still a bit interested in starting a business.

“This is a very good talent.”

“yes?”

“Find out and apply if interested.”

“yes…….”

I don’t know what it is, but let’s just say I knew it.

“Okay, everyone has 10 minutes left. Hurry up and turn it in.”

The professor resumed teaching.

* * *

After class, me, Changsu, and Minseok gathered together.

“Lee Yeol~ Isn’t this Minseok from our business department?”

“How have you been?”

“I’ve been fine.”

“I heard you went to the Defense Acquisition Program Administration and worked? You must have made some money?”

“hahahaha. A little bit?”

Chang-soo received the 4th grade due to poor health, and instead spent his military life working for the Defense Acquisition Program Administration instead of the military.

He was an enviable fellow.

“Why did you ask to see me anyway?”

Minseok asked.

“Do you know Professor Choi Man-soo?”

“You know, aren’t you the one who feeds our university?”

“Eh? You know that too?”

Changsoo said so, and Minseok said the same. Was the professor that great?

“Only you would know. So why is that professor?”

“No, I just went to class, and they’re asking me to create a startup club or something.”

“Huh? Cheol-woo said he told you to create a startup club?”

“Uh. That’s why I want something, and I wonder if I know.”

“Um. I know that. But… I heard that it’s hard to apply for it, and it’s hard to get approval. If the professor said it, it would be almost an easy win.”

“Oh? Yes?”

“Yes. How strong is our school’s link project team, but even the money the professor rolls for the project team would be ridiculously a few billion won?”

“Billions? Crazy.”

He was a bigger person than I thought.

“Hey, it’s a good opportunity. Let’s create a startup club and try it. It’s a boom these days because of startups or something.”

“okay?”

“Uh. Yes. Why are you so uninterested in worldly affairs?”

“I know.”

“Anyway, a lot of investment is being made, so let’s apply.”

“Okay, then. Let’s go right away. Changshui, are you going to participate too?”

“If you do, let’s do it together.”

“Okay, let’s go.”

The three of us entered the administrative office of the university link project team. There were more teachers than I thought.

“I’m here to apply for a startup club.”

“Is there a document you see there? Fill it out, please.”

“all right.”

After receiving the start-up club application form, I went to the empty classroom.

Some documents were required.

「Entrepreneurship club application.」

「List of entrepreneurship clubs.」

“business plan.”

I just had to fill out the application form and the list, but… … . What the hell is this business plan?

“Minseok. What is this? A business plan?”

“It’s literally a business plan, which is where we write down which items and which strategies to commercialize.”

“Crazy, you want us to write something like this?”

“Well, there’s nothing you can’t do. You just have to write it down.”

“Do you have any items?”

“Um… that’s the problem. Can’t we write something like CAK or TSS?”

“That? Come to think of it, how is it going? Those?”

“I asked about CAK, and even though it’s still struggling, developers have to learn all over again to use it, so it’s a little hard to convince them. I put some papers in TSS.”

“You’re doing great. Great.”

“It’s great that you made it.”

It was still unclear whether they would make money or not. Apart from development, that would be the capacity for commercialization.

I hope it goes well.

“So what do you do with it?”

“Hmm… how about trying something new?”

“It’s new. What can I do?”

“Don’t look far away, look around.”

“Um…… it’s around. Ah! Shall we try that?”

“What?”

“My dad recently returned to the farm.”

While I was in the military, Dad closed the truck and went back to farming.

“Returning to farming?”

“Uh, grow peppers in a greenhouse.”

“so?”

“But the boiler didn’t work last winter.”

“Huh? The boiler didn’t work? Then wouldn’t all the crops die?”

“Right… I heard that they all died. They said it was a bit fortunate that they had insurance.”

“That’s fortunate.”

“That’s how I came up with it. What if I made a system that monitors the temperature of the greenhouse through a smartphone?”

“Oh? That’s fine. Let’s try it.”

“Okay. Changsoo, don’t you have any meaning?”

“Well, it’s me. None.”

“Then, decide on the item, and you write the business plan, Minsu! hahahahaha.”

“……. Okay, okay. This is my job. But what should I name the club?”

“Um, I’ve never thought about it. Any good ideas?”

“Cheol-woo has to decide this. But he’s the president.”

“I?”

“Then who does it?”

“okay.”

Agreed.

* * *

A few days later, the club was named LF. The abbreviation of Lava Fly, meaning that although it is now a slug, it will fly up someday.

“Hey, that’s great!”

“why?”

“The club review has been approved. This is the first time I’ve won so quickly.”

“Yeah? That’s good.”

“It looks like the professor took good care of it. Oh, and there’s one more.”

“What?”

“They gave club rooms too… Crazy, isn’t it really great? Giving a club room to a new club right away.”

“Wow, really?”

“Uh. They gave up the entire third floor of the Startup Building, so I’m on my way to get the card key.”

“Really? Shall we go?”

The 3rd floor of the start-up hall was a single building and was not very large. About 10 sqm. Still, it was enough space for five or six people to go in and work.

There was even a computer there.

“Oh, is that good?”

“Hey, really, that professor must have a good haircut. Just give him a club room like this.”

“I know?”

“I guess I really liked you.”

“hahahaha.”

“Okay, and I’ve got some data.”

“What?”

“Well, various foreign activity materials and equipment requests, etc.”

“Oh. So what do we do now?”

“Um… should we start with development first?”

“As expected, development…”

“So, you have to have a device to measure the temperature and display it on the app, right?”

“yes.”

In fact, it was possible to transmit the data from the app only after installing the same temperature sensor in the greenhouse and receiving the data.

“So, I’m thinking of finding someone on the hardware side. And I need a designer as well.”

“designer?”

“Uh, I heard you redesigned it in the hair salon management program, Blue Light.”

“That’s right.”

“So, let’s recruit two more. No, since Changsoo said he’s busy these days, should we get one more developer?”

I’m sure designers will need it. It was a young gem there, but couldn’t I do the hardware?

While taking a digital logic circuit class, I knew roughly how hardware works.

The numerous transistors of the CPU are all logic circuits, and in the end they are a collection of them. And I got interested, so I looked into it a little, and CPUs for embedded systems came out well.

In particular, the Atmega series manufactured by Atmel.

“No, I think we just need to find one designer.”

“Huh? It’s development. Even if you don’t have Changsu, I think you can do it by yourself. Isn’t the hardware too much?”

“I’m going to try it.”

“Huh? You do hardware?”

“uh.”

“Can it be done? That’s a completely different field from programming? You have to solder and design circuits.”

“Don’t you know? Try it once and if it doesn’t work, get it again.”

“Yes, if that’s what you mean.”

“Okay! Let’s try it. Entrepreneurship.”

“Okay, let’s do it right. Then I’ll go out and get a designer right away.”

“How do I get it?”

“It’s just bumping into it.”

“how?”

“Well, there is a visual design department in our school. It seems like they learn photoshop there, but they just go there and flirt with them.”

“hahahaha… that’s amazing.”

Minseok was really great in a different way.

“No, then I’ll go.”

“Okay! Then I’ll set up the computer and take a look.”

Minseok went out to find a designer, and I set things up, such as connecting my laptop to the monitor.

‘Well, the setting was over soon. What should I do first?’

I started scouring the internet.

‘Oh, schematics are made with something called OrCad? and… … . I need to make a PCB board with this. Um, can I use C++ for the Atmega and a roughly verified sensor?’

I kept scouring the internet to get an estimate.

‘Internet is a bit of a problem, but there is an egg service from ST telecommunications company?’

And it means that I can make enough of my thoughts.

Although there were some difficulties in how much resistance should be included in the circuit diagram and how much capacitor should be used.

‘hmm… … . Shall we try it?’

I immediately installed OrCAD for education and started drawing circuit diagrams.

‘Since the resistance flowing through the wire is about 0.0001 ohm, the downfall resistance should be 460 ohm. Oh, and since greenhouses have high temperatures and high humidity, I’ll have to take that into account.’

I started making circuits one by one.