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David Yin's Blog
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Posted on April 26, 2025April 26, 2025 My Life

Install a new Bathroom Fan

I bought a bathroom fan at Costco Warehouse at a discounted price. Dewstop Bathroom Fan and Switch After installation, it is so quiet that I can barely hear it. The steps are simple. The work is not easy for me....

Posted on April 22, 2025April 22, 2025 Hardware

Kobo Elipsa 2E – a Big Screen eReader

I bought a Kobo Elipsa 2E last week, April 15. After three days, the Amazon delivery guy handed over the box to me. Kobo Elipsa 2E I bought it on Amazon.ca. $499.99 plus tax, the total is $559.99. Features of...

Posted on April 9, 2025April 22, 2025 Web & Network

The attack is going on

UPDATE 1: The DoS attack is going on. I will report it every day here. Until 2025/4/9 11:09 PM,  47,085,003 bad requests from China in the past few days. UPDATE 2: April 10, 2025, the spammer stopped attacking for a...

Posted on April 8, 2025April 8, 2025 phpBB Mod & Tips Web & Network

One record of Layer 7 DoS Attact

Today, I received an email from a website monitoring service. It said my site was down. 1) The very first step is to try the website. The browser can not open it. 2) I sign in to the PVE, and...

Posted on March 29, 2025March 29, 2025 Hardware

Manually Downloading Realtek PCIe Driver

I am trying to download the network interface card driver manually. It is Realtek PCIe GBE Family controller. After a Google search, I landed on the official download list. This software supports a lot of Realtek products. From GBE or...

Posted on March 9, 2025March 9, 2025 L.A.M.P.

MyISAM and innodb engine

I have a VM that hosts a few websites there.  Today, I ran the mysqltuner.pl script to check the performance and see if there is any recommondation. I know I have a database with over 900M data. There are 67...

Posted on March 4, 2025 Web & Network

Benchmarks Ubuntu 22.04 vs Ubuntu 24.04

Here is my Contabo VPS. I upgraded it from Ubuntu 22.04 to Ubuntu 24.04. So, let us see the difference before and after. In the Ubuntu 22.04

Posted on February 25, 2025February 25, 2025 Web & Network

DigitalOcean VPS choice

Here is my new comparison of DigitalOcean VPS. Shared CPU Basic plan. I can choose from Regular CPU to Premium Intel CPU. I have a Five-year-old Regular CPU the smallest plan, $6 monthly. Then I created a new VPS, Premium...

Posted on February 16, 2025February 16, 2025 Web & Network

Got Telus PureFibre Internet installation

The day before yesterday, the Telus technician came to my home, a townhouse. He installed the PureFibre Internet connection. In the utility room in a separate building, he installed a converter, a Fibre cable plugged into it,  and an RJ11...

Posted on February 3, 2025February 3, 2025 3D Printing Hardware

Make a small box for the AQI project

About half a year ago, I made a project of AQI device with Raspberry Pi Pico W and ENS160+AHT21 chips.  I put them on a block of 2X4 wood. Now I have a chance to make a box with my...

Posted on January 18, 2025January 18, 2025 Hardware

New PC for my wife – Acer Aspire TC-1775-UR12

My wife’s computer is about nine years old. I got the motherboard and CPU in San Francisco when my family was with my parents-in-law. It is an Intel i5 6500 and an Asus H110M-C. I know it has been over...

Posted on January 13, 2025January 13, 2025 WordPress Notes

No more space of my Web Server

This afternoon, I found my site was not accessible when I tried it. So I went to the Webmin panel. It loaded, but with a warning, disk space is running out. It is kind of urgent. All websites on this...

Posted on January 1, 2025January 1, 2025 Hardware

Replace the battery of Mi A1 smartphone

I changed the battery of the Mi A1 cellphone last week.  The battery was so bad. It needs a charge even if I just used it for one or two hours as a hot spot. I bought the battery from...

Posted on December 23, 2024December 23, 2024 Hardware

Replace the Kindle Touch Battery

I have a Kindle Touch 4th generation. It is 12 years old. Working but the battery is only a few hours in standby mode. I bought a replacement battery on Tmall.com. Chinese Yuan 36. The very first step is to...

Posted on November 20, 2024November 20, 2024 Software

Erase the HDD with KillDisk

I want to introduce a software, KillDisk. I used it to wipe out or erase an HDD. I have an HDD with a Smart Warning. Western Digital WD Caviar Green. WD20EARS, 2.0TB SATA/64MB Cache. Product of Thailand Date: 19, Jul...

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