After finishing the activities of the children's welfare home, Yang Yan was temporarily idle, and after taking Luoluo to the park for a day, he put the smart "teasing" cat car he wanted to make before on the agenda.

Yang Yan has put a lot of thought into the redesign and assembly of this toy car! Moreover, since he started researching it last month, Yang Yan has found that this thing is not as simple as he thought at the beginning!

The programming of the "intelligent cat recognition" system has become the simplest part, and for Yang Yan, the difficulty is actually the mechanical difficulty!

It's not just a simple toy car, Yang Yan also has to install a variety of sensors on it, modify its body structure, and replace it with a higher-power battery to drive the car's electronics......

To this end, Yang Yan borrowed books related to mechanical design and mechanical principles in the library of Nanyue University early to teach himself, and even ordered a batch of materials online to make preparations.

It is worth mentioning that in order to find a suitable sensor for the toy car, Yang Yan also spent a lot of money to buy the latest and more advanced sweeping robot on the Internet, and used a screwdriver to dismantle it in all directions, and find out its sensors, microprocessors and other electronic components for his own "teasing" cat car.

As for why you don't just use the sweeping robot to modify it, it's because Yang Yan thinks this sweeping robot is a bit big, and it's not good-looking......

The main body of the "teasing" cat car comes from a monster truck bought online and is really a four-wheel drive!

Of course, this monster truck is still a little different from the kind of oil-burning monster truck that Xia Yu said, it is a toy car at best, only the appearance of a monster truck and four-wheel drive, shock absorption system, battery power supply and a decent motor, it is destined to not show the power of a real monster truck that can go over mountains and mountains - it is still relatively safe for family use and children's toys.

It's a bit far......

Today, Yang Yan is finally going to start the modification operation!

After breakfast, Yang Yan moved the tools, parts and computers to the dining table, and in order to prevent Meow Millet from harassing and preventing it from getting rid of those parts, Yang Yan also put it in a cage.

But in addition to meow millet, Luoluo is also curious about what his father does!

The little girl followed her father in a hurry, and went around the study and living room several times, and finally when Dad sat down, she stretched out her little arms and babbled for Dad to pick her up, to see Dad do something fun!

Yang Yan still has a way to deal with this sticky little goblin, no, the sticky little fairy, just listen to him smile and say: "Luoluo, is it okay for Dad to give you a task?"

Task?

What is it?

Is it delicious?

"Good ......" doesn't care so much, and responds sweetly first.

"In this way, Dad is making a very beautiful little car!" Yang Yan took out the bright red shelled monster truck he bought and swung it with Luoluo, and said with a smile, "But, Dad doesn't know how to make it more beautiful, Luoluo, you do Dad a favor, help Dad find some good-looking dolls in your toys, and when the time comes, we will put it on the car, so that the car will become good-looking, okay?"

This time, Luoluo understood what his father said, even if some sentences were a little difficult to understand, but Dad even said with a comparison, Luoluo also understood in a daze!

"Yes, it must be good-looking!" Luoluo pouted and said seriously to his father.

"Yes, it has to be good-looking, because what Dad made is also a falling car, and it has to be good-looking!" Yang Yan rubbed his falling hair with a smile, and then pointed to the falling toy storage basket in the living room, "Go ahead, help Dad find the best-looking doll you think!"

Although it is a "funny" cat car, it is not impossible to add some personal elements to it! Yang Yan is also excited to buy some stickers to make the car out of some sci-fi style, of course, if Luoluo chooses some small dolls, as long as the size is right, it is not impossible to stick on it!

How interesting it would be to imagine a Spider-Man figure (though it didn't) crawling on this high-tech car, chasing after Meow Mi in high spirits!

Luoluo was affected by his father's positive tone, and he also grinned happily, and responded to his father briskly: "Hmm!"

Then, with a twist of the little girl's head, the pretty and lovely ponytail rippled with layers of golden light in the refracted morning sun, and she ran to her toy with a cheerful step.

Without her daughter's interruption for the time being, Yang Yan took out a multi-head combination screwdriver that could not be screwed on the mobile phone except for the mobile phone screws, and unloaded the beautiful monster truck that Luo Luo saw just now.

This time, Yang Yan's modification operation is much more professional, he put those screws into a special screw finishing plate one by one, and there is a serial number on it, with Yang Yan's memory, he will definitely be able to install it back upside down later.

The original battery pack of the monster truck is definitely not enough to drive the sensors and microprocessors that Yang Yan wants to install. Therefore, Yang Yan removed the original battery pack and added a lithium battery disassembled from the sweeping robot for the power supply of other components, as well as the power supply of the motor - of course, on the motor side, Yang Yan also added some physical voltage transformation circuits to match the rated voltage and current standards of the motor.

It took Yang Yan a lot of time to modify the battery, even if he had already drawn the transformation diagram, wiring and welding with rosin solder wire, etc., it was really not fast!

"Baba, Baba......" Luoluo didn't know when she returned to her father's side, she called her father twice with some excitement, but the little girl's crisp and loud cry failed to attract her father's attention.

Hey?

Luoluo blinked her eyes suspiciously, but she couldn't wait, her left little hand grabbed directly on her father's thigh, and shook it urgently.

"Luoluo, what's wrong?" Yang Yan, who was concentrating on the thin line of the circuit, only reacted in a trance at this time, he turned his head and asked Luoluo with a smile.

"Baba, Jie, Jie!" Luoluo only regained her excited expression at this time, and she held the bear doll behind her with two hands to show her father.

"This one doesn't work, it's too big. Yang Yan said with some tears and laughter, "Let's want a smaller doll, Luoluo, you can find it again!"

"What's the point?" Luoluo looked at his father in confusion.

"Yes, it can't be that big, it needs to be small. Yang Yan gestured with his hand, as if he was compressing something, and said with a smile.

Luoluo blinked hesitantly, and muttered, "Yes, you want to look good......"

"Yes, it's going to be nice and it's smaller. Yang Yan reached out and gently patted her daughter's back, and coaxed, "Luoluo, go and find it, look for a long time." ”