While the young man hesitated, the shop owner found a remote control behind him, turned it on, and paired it. After some tweaking, it actually worked.
He said to the customer who needed repairs, "This remote control is the latest universal remote. Luckily, it works on your TV. Since we're both Chinese, I won't make any money off you. Just give me $18 for this remote."
The customer didn't even need to think; they immediately took out their money to buy the remote control.
Xing Baohua was truly impressed by the boss's methods.
Actually, this technique has a name, but Xing Baohua has forgotten it. He had listened to lectures by the company's marketing experts before, once or twice when he had nothing else to do.
The only thing I vaguely remember is that this method has been analyzed before.
Suddenly, I really didn't remember.
After everyone left, Xing Baohua gave the boss a thumbs-up and said, "Awesome."
As if sensing his thoughts, the boss smiled slightly.
A moment later, Xing Baohua's cell phone and solar panel were taken to him. Xing Baohua then began working on the workbench.
The boss, curious, also stood aside and watched.
Xing Baohua then cut the connecting wire between the solar panel and the battery compartment. He then disassembled the battery compartment, revealing a small circuit board inside.
The circuit board has a microcontroller power manager chip soldered on it. Xing Baohua is taking this apart now.
The phone was then disassembled, exposing the motherboard inside.
There was no room to add another microcontroller chip on the motherboard, so Xing Baohua borrowed a multimeter to measure the input voltage of the microcontroller power management chip on the motherboard, and then measured the output voltage of the solar panel.
If the voltage is different, it needs to be changed.
I asked the shop owner if they had this kind of chip. The owner said no.
So Xing Baohua could only use the micro-controller power management chip that comes with the solar panel, which was redundant. There was no other way, so he experimented.
This won't happen when the finished product is made.
Can I just add a few more capacitors? I measured it with a multimeter, then asked the shop owner for a universal circuit board to make an external add-on.
Fortunately, many electrical components are interchangeable, and the shopkeeper had them readily available. They were all cheap, costing only a few cents.
After soldering the small circuit board, use enameled wire to make jumper wires on the mobile phone motherboard.
Solar energy is fed into the motherboard's power management system via a micro-controller self-made by Xing Baohua.
Xing Baohua put the battery in his phone and placed it by the door to sunbathe, hoping it would charge.
Xing Baohua did not test the conversion rate of the solar panels, but considering the technological level at that time, it was only around 10%.
As long as the solar panels are of good quality, the converted voltage will be stable.
First, place the modified phone by the door to let the sunlight shine on it, then look at your watch. This will help you determine the charging rate within an hour.
"Are you a high-tech professional, sir?"
"It's so-so. By the way, boss, the principle behind this is simple. If you can understand the blueprints for mobile phones and pagers, you can make a lot of money repairing these in the future," Xing Baohua said to the boss with a smile.
"Really? Do you have a picture?"
“Yes! It’s not on my body, it’s all in my brain.” Xing Baohua pointed to his brain.
"Wow! That's amazing?" the boss exclaimed in surprise, already believing him. He had witnessed Xing Baohua's skillful maneuvering without any visual aids.
I thought Xing Baohua had memorized it all.
But the next sentence shocked the boss even more!
“This is what I designed and developed. If you want the blueprints, I can sell you a copy. But it won’t be cheap,” Xing Baohua said with a smile.
There's no such thing as a free lunch. Xing Baohua also dug a small hole to make a little money.
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