Summary
: Whether you are working on embedded systems or computers, everyone must know Zhihui Jun. If you don’t know yet, then go to Baidu to find out! Mr. Zhihui should be the boss that every electronics enthusiast yearns for but is still out of reach. Zhihuijun graduated from the University of Electronic Science and Technology of China in 2018, and then worked in the algorithm position of OPPO. Zhihuijun is now an AI architect at Huawei. He studied at the University of Electronic Science and Technology of China for his bachelor's and master's degrees. An UP owner who pursues perfection in his works. He loves hardware development and has been updating hardware DIY videos during this period, which is sought after by many netizens. Today I will introduce you to Zhihui Jun, the hard-core UP owner of station B and engineer of "Stack Overflow".
Now Zhihui Jun has joined the "
Huawei Genius Youth Program
".
When Ren Zhengfei proposed the plan, he said:
"
This year we will recruit 20-30 talented teenagers from all over the world, and next year we want to recruit 200-300 talented teenagers from all over the world. These talented teenagers are like 'loaches', infiltrating our organization and activating our team. ”
The Huawei Genius Program has very high requirements for applicants: those who have published a large number of papers in top international journals and received citations; those who have outstanding and abundant commercial results in research directions; those who have placed in well-known competitions will be given priority. The recruitment process of "Genius Boys" is very strict. It usually requires about 7 rounds of processes, and finally passes the interview with Huawei's president. "Geniuses" recruited into Huawei through this program will receive an annual salary starting at 1 million. You can join the "Huawei Genius Youth Program" ” is also a proof of his own strength.
Let’s take a look at some of Zhihui Jun’s very hardcore works! Let’s start with some of the most played works on Station B.
Station B’s most powerful small TV
The smallest Linux computer on the Internet
Knowledge involved: electronic basics, electronic component selection, circuit schematic design, high-speed circuit PCB design, electronic component welding technology, circuit board debugging, startup program UBOOT cutting and transplanting, Linux kernel cutting and transplanting, file system, low-level Driver (C language, ARM architecture assembly, Linux kernel architecture), upper-layer applications (C++, Qt, JAVA, Python, etc., deep learning, machine learning, Opencv, neural network, natural language processing), static blog server construction, advanced Mathematics, linear algebra, probability theory, discrete mathematics, 3D modeling, 3D printing, engraving machine, video shooting post-production, anti-hair loss technology.
L-ink_Card
This is a mini NFC smart card designed to solve some of the pain points encountered by individuals when using IC cards, based on STM32L051 and ST25DV. An additional electronic ink screen and supporting APP are used for display content customization.
FOC vector controller
FOC (Field-Oriented Control), literally translated as field-oriented control, also known as vector control (VC, Vector Control), is currently the best method for efficient control of brushless DC motors (BLDC) and permanent magnet synchronous motors (PMSM). one. FOC aims to accurately control the size and direction of the magnetic field to make the motor's motion torque stable, low noise, high efficiency, and have high-speed dynamic response. To put it simply, FOC is a drive control method for brushless motors. It allows us to control brushless motors at the "pixel level" and achieve many effects that cannot be achieved by traditional motor control methods.
PocketLCD
This is a power bank that supports PD charging and comes with a 1080p display. On the back is a Hello World program written in Java, which looks very geeky.
The physical effect is very beautiful, it can be said to be a work of art.
While charging the Raspberry Pi, it can also serve as its display:
Choose to use the HDMI interface as the video signal input.
Installed on the power bank is a mobile phone display.
This kind of small display is basically a MIPI interface. This interface is specially optimized for mobile phone devices and has a trend of high speed and low power consumption.
But it cannot be driven directly with HDMI.
Therefore, a HDMI to MIPI hardware module is needed.
A CNC engraving machine is used to manufacture small acrylic middle frames and panels, and reflow soldering is used to solder all components to the PCB board.
Zhihuijun has open sourced the entire software and hardware of the power bank, but if you don’t have the same equipment as the big brother, it’s really not easy to copy one. On the day the video was released, all technical details were open sourced, and it received 1.2k stars in just 3 days. The most convenient thing about this external screen is that it eliminates a power cord and has an additional power bank function. No matter which function is used, it can be played very well, and it even has "integrated effects".
The delay effect is also very good. It is no problem to play "Sekiro" externally. The character's movements are almost synchronized with the controller operation (2 times faster effect).
Parameters such as color and viewing angle are also relatively ideal.
From portable HDMI monitors, development boards to cameras, it can achieve all the functions that ordinary external screens can achieve.
This is an 8000 mAh power bank. Port C supports 18W fast charging input, and port A supports 18W PD fast charging output.
When
the C
port
is fast charging, a blue indicator light will be displayed on the screen;
the A port can be used to charge other conventional devices.
Since HDMI provides a certain amount of power to the screen, the entire display actually consumes very little power. In theory, the screen can last for more than a week.
How do you guys feel about seeing this? Without further ado, let’s go study! ! !
For more interesting projects from Zhihui Jun, please pay attention
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