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...
Category: 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...
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...
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...
Btootos Earbuds suck
I bought the Btootos Wireless Earbuds in Nov. 2023. Almost one year now. I used it about once a week—not very often. So, when I found it was a problem, it was June 2024. The problem is that the right...
HP 24f Monitor Vesa Mount – 3D printing
I am using two HP 24f monitors side by side. I bought them three years ago at Costco. Here is the setup look. There is a big foot under the monitor. I want to change it and mount it on...
PCIe to SATA adapter
I received my order, a PCIe to SATA adapter yesterday. I installed it immediately to add the fifth hard drive to my PC. Here is my PC situation. The motherboard is an ASUS Prime B450M-A II. The storage posts are...
Coping files Speed
Here is the comparison of coping files from HDD to SSD and from SSD to SSD I have an HDD, which has a lot of game files. I want to move it to an SSD with a SATA connection. Look,...
AMD Ryzen 5 5600G Benchmark
It is the CPU on my desktop, AMD Ryzen 5 5600G. I got this CPU in December 2021, almost three years ago. I am still using it as my main PC. Recently, I watched a video about Scrapyard Wars on...
Upgrade TP-Link Deco X90
I have two Deco X90 routers. I used them for more than two years. Normally I will check it to see if it has new firmware. I sign in to the router interface first. Go to the Advanced > System...
Program ESP32 CAM with YP-05 FTDI
I bought an ESP32-CAM board and an FTDI (YP-05) board in July. It was hard to find time to play them until yesterday. Here is what I got. ESP32-CAM board $5.53 for the ESP32-CAM WiFi Module and OV2640 Camera Module....
About ESP32
ESP32 is a series of low-cost and low-power System-on-a-chip (SoC) microcontrollers developed by Espressif, including Wi-Fi and Bluetooth wireless capabilities and a dual-core processor. Someone is familiar with ESP8266, the ESP32 is its successor. I am not, so I have...
Got some toys for myself
Yesterday, I received my August 7th Aliexpress order—four items in separate packages from mainland China. They are in a big bag labeled with Canada Post. Let me open them and have a look.
Fix the XBOX 360 Wired Controller
The XBOX 360 Wired Controller I have is more than seven years old. I have a post when I bought it. Two weeks ago, I tried to clean it. So I unscrewed seven screws. I took out the parts and...
Make an AQI device with Raspberry Pi Pico W and ENS160+AHT21 in 5 Steps
I received the ENS160+AHT21 sensor module yesterday. I can not wait for any more for the stuff. So, I build the AQI device right away. I have to give credit to TimHanewich for his project on GitHub. I changed it...