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Before we start, let’s briefly understand the basic concepts. I can roughly summarize them into the following points What is Web3.0 and what does it have to do with blockchain? (The article last time will come in handy) Requirements: Develop a Python-based Web 3.0 image uploading system. This system will allow users to upload images and store them on a decentralized network, while recording transaction information on the blockchain. I originally wrote it for fun, but I thought about writing it into a user authentication file operation that integrates a full set of management, so that it “will eventually become the ultimate solution for image upload services.” But in practice, I found that it was not very practical, so I gave up. However, I have always been so obsessed with pictures. ...

Hey, I’m back as I promised to write the esp8266 development board firmware myself. I made a promise 20 years ago, and today I came back to fulfill my wish ESP8266 serial WiFi module - WiFi killer Today we also connected the OLED display. The one I bought this time is a 4-pin OLED (128*64), which does not support color display. NodeMCU Development Board NodeMCU is an open source IoT hardware development board. Because it supports WIFI function and its usage is very similar to the Arduino development board, it has gained the favor of more and more maker friends from all over the world in recent years. NodeMCU is similar in size to Arduino Nano. It is not developed by the Arduino team, but we can also use the Arduino IDE to develop it. ...

It was a month of dark, windy and rainy night, and it seemed like something was going to happen. Due to an “accident” and the epidemic, I became a “vegetative” for a time and almost went to the second dimension. Fortunately, I came back through “rescue”. I have not been able to receive messages from me in the past few years. I am grateful to those who are still here and care about me. Thank you. ...

I have been wondering whether I should write a year-end summary and what should I write. I struggled with this matter for more than a month and kept it in my mind. It was not until a few days ago when I was playing games with Ms. Yang that she asked me: “Have you written the year-end summary?” This made me decide that I must write it. Last year, 2020, due to the epidemic, I felt that the year passed very quickly, and it ended before I even started doing anything. This also makes me feel that there is nothing to summarize and I don’t know where to start. ...

Merry Christmas Merry Christmas! My Christmas present, yes~ In the blink of an eye has come to the end of 2020, this year hardware manufacturers one after another, the former Intel to fight the price-performance war released the Intel 10th generation of desktop-class processors, after the NVIDIA RTX3070 stormed its own last generation of consumer-grade flagship graphics cards, can be said to be a good thing, and to perfectly play the potential of these performance hardware, an excellent motherboard is also indispensable naturallyASUS TUF GAMING gaming agent motherboard to Solid materials, stylish design and affordable price is widely popular, and just released this year, positioned in the mid-range market of the heavy artillery series, with more powerful power supply configuration, 2.5G wired NIC, reinforced armor and other new features devolved from the flagship products, pricing and other mid-range products, the series is naturally also widely welcomed by DIY enthusiasts! Sticker …… The Heavy Gunner series inherits the original tough guy style of the TUF GAMING series, still using the black and green as the main body, and then embellished with a yellow-colored logo, which is the consistent style of the TUF GAMING Special Forces, with a high degree of recognition. The appearance of the motherboard reveals a full gaming atmosphere, with a large TUF GAMING logo is printed on the large thermal armor. The use of a new LAG1200 interface, not compatible with processors before the tenth generation, but it seems that it will support the back 11 generations. In terms of memory slots, the ASUS TUF GAMING B460M-PRO Heavy Gunner motherboard provides four DDR4 memory slots with a frequency of up to 2933MHz and is equipped with ASUS’ exclusive OptiMem Memory Optimization technology, which can significantly improve memory overclocking space and stability. Up to 128GB of memory is supported. ASUS has also marked the 1 3 and 2 4 positions of this motherboard with different colors to remind users how to insert the memory when using two sticks of memory! In the MATX version, ASUS TUF GAMING B460M-PRO Heavy Gunner motherboard for heat heat is more serious power supply, chipset with a large number of frosted surface treatment of the heat dissipation armor. This design not only can quickly take away the heat of the motherboard, but also bring a very strong sense of sophistication and design to the motherboard. In terms of graphics card slots, this motherboard provides two PCIe long slots. One of them is equipped with metal armor to prevent accidental damage caused by graphics card insertion and removal, and this slot is in X16 mode, so users who will only be using a single graphics card are recommended to plug their graphics card into this slot. Then take a look at the motherboard’s I/O ports, ASUS TUF GAMING B460M-PRO motherboard I/O baffle is integrated into the motherboard, the installation of the backplane to reduce the installation steps, at the same time, the motherboard of the integration of a stronger, one-piece I/O baffle design can only be seen in the past on the ASUS high-end motherboards, and now also down to the B460 chipset motherboards, to avoid loading, but also dustproof and anti-dust, and can also be used to protect the motherboard from being damaged. This motherboard provides two USB 2.0 ports, one for each USB 2.0 port and one for each USB 2.0 port. This motherboard offers two USB 2.0 ports, four USB 3.1Gen1 ports, an HDMI port and a DP port, in addition to a 2.5Gb network port and five regular audio ports . There are six SATA ports, three in a row, and the second set of slots is horizontally aligned to prevent large graphics cards from blocking the ports! Finally, in terms of audio, this motherboard uses a Realtek S1200A high-quality audio chip with 108dB SNR output and 103dB SNR, which is one of the top sound card chips available. Preview of the parameters on the back of the box A brief look at the CPU, since there’s not much to say, I’ve put it at the end. i5-10600kf Chinese box, 3 years national warranty, due to the “K” suffix, you can also see from the side, this CPU does not come with a cooler, you need to buy your own. The CPU does not come with a cooler, so you’ll need to buy one separately.

On the difference between fast and slow Internet speeds With the popularity of the Internet, users pay more and more attention to the speed of response. The faster the website, the higher the user stickiness and conversion rate. To put it simply, it means increasing the speed! There are many factors that affect website speed, such as…………………. Being serious is not my style, please watch my performance below Origin of the idea: The initial idea was to use pure CSS to implement it. Base64-encode the base image and place it directly on the background-image, so that the background image can be loaded together with the web page. ...

One life creates two, two creates four, code creates all things… The world created by programmers provides more possibilities for human beings It’s the annual 1020 Programmer’s Day again. No matter how busy I am at this time of year, I will write an article on time. I didn’t write any open source projects this year, but I also wrote a lot of code, which could circle the earth twice. 2020-1024=996? ? 996, which caused a lot of commotion last year, was this destined to happen? There seems to be no good copywriting to share with you this year. . Then let us program for ACG~~! ...

I have always had a wish to buy VR equipment, and today it finally came true I bought an Oculus branded VR all-in-one machine on the recommendation of @本集团马竞技 Open a money-saving card -> receive coupons -> top up money -> place an order -> done in one go (heart is bleeding) Since the Oculus brand has not entered the Chinese market and other reasons, I also bought a Gigabit router bundled with it. It arrived in two big boxes One is equipped with the VR body, and the merchant gave an extra USB rechargeable battery, SMARTOOOLS Spanish brand, which seems to be OK The other box contains my Gigabit router and hundreds of USB3.0 link cables A router that looks like a peanut shell A bunch of incomprehensible instructions, and it’s still an external fan (#cryLaughter). Since this router brand is also foreign, the three-wire plug is European standard, and domestic three-hole sockets need to be connected to a converter. Outer packaging - on the reverse side, there are some popular game recommendations below Front, simple and cool The box inside the package is printed with the Oculus logo. Lift the lid, wow Oculus Quest six degrees of freedom VR is currently the most powerful all-in-one VR machine on the market Officially, it comes with a pair of handle batteries, a basic operating manual for the device, and a thick manual that is too detailed to be understood. Posing, host + left and right handles The next step is to turn on the phone and download the Beat Saber and VRChat that I have been thinking about for a long time… to start my journey of escaping reality… ...

Become CEO, marry Bai Fumei, and reach the pinnacle of life. The first step is to buy a server A server with a graphics card Motherboard Memory module CPU fan Hard disk + CPU Then some small parts arrived one after another, such as power cords, network cables, meters, etc. When the things are almost there, we start assembling and turning on the power. The keyboard, monitor, and installation USB flash drive are all borrowed, and they must be returned after turning on the computer. The boot process was not very smooth and it took two or three weeks before it started running normally. In order to deal with power outages and shutdowns when no one turns on the phone when a call comes, I bought a WiFi remote boot module, which automatically turns on the phone when the call comes. Later, in order to deal with the power outage, we directly purchased a brand new UPS, which has power outage protection, continuous power supply, stable voltage, and protects the server. Later, because the configuration could not keep up, we purchased a new CPU and new graphics card New motherboard Finally put it into the special chassis This may be the server you use with tens of millions of data (-laughing The server has been running normally and uninterruptedly for several months.

I finally have time to post a blog. This Dragon Boat Festival was not wasted. Our team went to Shuangyue Bay in Huizhou City for a pleasant trip of 2 nights and 3 days. I won’t give an overview of the bumpy journey on the road….. Shuangyue Bay Observation Deck, after finishing the breakfast provided by the hotel early in the morning, we set out to the observation deck overlooking the entire Shuangyue Bay. I rode a small yellow car and walked freely through the traffic jam, and soon arrived at the foot of the mountain. Since there were many people at the Turtle Museum and we didn’t wear masks, we skipped this attraction and went directly up the mountain. After climbing for several hours, we finally reached the top of the mountain Like two opposing crescent moons Isn’t the scenery at the bottom of the mountain beautiful? Mei, why are you spending so much time here? For snorkeling at Xiaoxingshan, rent a boat, go out to sea together, bring your equipment, and dive into the water. ……… Wearing a lifejacket, a lifebuoy, and holding on to the lifeguard, I really can’t dive in… Gagaaaaaaaaaaaaaaaaaaaaaaa The water near the islands in the far sea is indeed much clearer than the shore The reefs on the side may be called rocks. It reminds me of Mio Akiyama in “Light Voice Girl”. It’s so scary when you look closely…ah…ah Return at sunset and enjoy the sunset over the sea From time to time, I take a sip of sea water, wow, salty, bah bah bah. The water drops are beating In the evening, abalone and lobster are served We call it, Abalone and Lobster Bureau, as if you can hear the sound of your wallet bleeding. Suddenly I realized that I forgot to take a picture of the night scene, it was over… ...