Learning Notes | CDISC SDTM DM Domain

[Translated from SDTM IG 3.2: www.cdisc.org]/SDTM DM (Demographics): Special purpose domain, describes the basic information of subjects in clinical research, is the parent domain. Variables: RFSTDTC (Subject Reference Start Date/Time): Usually equal to the subject’s first medication time. Necessary for all random populations, assigned as empty for subjects who did not reach milestone events (e.g., … Read more

N Methods for Disassembling Circuit Boards

☞ This is the 8109th article published by Metal Processing (mw1950pub) Introduction If you have a circuit board, how can you disassemble and reuse it? Today, our video will detail the N methods for disassembling circuit boards, truly expanding your knowledge! The video length is 2 minutes and 44 seconds, recommended to watch on WiFi … Read more

Disassembling the IBM ThinkPad Optical Drive: Some Surprises

Disassembling the IBM ThinkPad Optical Drive: Some Surprises

Breadboard Community Disassembly Event,Drones,Handheld Oscilloscopes,Computers,Robotic Vacuums,Smart Watches,Solid State Drives,Portable Speakers,Great Prizes and Lots of Benefits, Welcome to Join!More Details👈 Recently, I saw the news about IBM layoffs, and I started a conversation with my family. My father, hearing about the closure of the China division, asked, “What about Lenovo?” Indeed, many people from that generation … Read more

Disassembling an Air Conditioner Remote Control: BOM Cost Reduction

Disassembling an Air Conditioner Remote Control: BOM Cost Reduction

@Engineers, drones, tablets, headphones, JD gift cards, and rich prizes await you! 👆 Scan the code to post in the community and participate!This year, Guangdong has entered summer early, and the air conditioning is already on at my home. Today, we will disassemble a very conventional air conditioner remote control. This should be the simplest … Read more

iFixit Disassembles Huawei Mate 40 Pro: Repair Difficulty Is Very High

iFixit Disassembles Huawei Mate 40 Pro: Repair Difficulty Is Very High

On December 8, Beijing time, the famous disassembly team iFixit released the disassembly report of the Huawei Mate 40 Pro. During the disassembly process, they found that the overall repairability of this phone is very low, including the adhesion of the curved screen and the density of internal components, ultimately giving it a repairability score … Read more

Disassembling the Xiaomi Bluetooth Speaker: A Detailed Look

Disassembling the Xiaomi Bluetooth Speaker: A Detailed Look

[2024 First Edition] Disassembly and Drone Giveaway Event Returns! Write More, Get More Rewards! There are many products on the market for Bluetooth speakers. Today, let’s take a look at the Xiaomi‘s workmanship and cost performance. The Xiaomi Xiaoai Bluetooth Speaker Portable Version is a member of the Xiaoai family that has been around for … Read more

Curious Disassembly of My Son’s Toy Tank: Single-Layer Circuit Board + Multiple Motors, Supporting So Many Functions!

Curious Disassembly of My Son's Toy Tank: Single-Layer Circuit Board + Multiple Motors, Supporting So Many Functions!

While my son was at school, driven by curiosity, I secretly disassembled his remote-controlled tank to see its internal structure for future modifications. The toy’s existing functions include remote control for moving forward, backward, turning in place, side movement, and firing bullets. I directly removed the wheels, and the wheel structure is indeed clever. Reverse … Read more

Disassembly Report: Huawei 3000W Digital Power Module

Disassembly Report: Huawei 3000W Digital Power Module

Charging Head Network’s 3661st disassembly report. Introduction The Charging Head Network has acquired the Huawei R4850G1 power module. This module uses digital control, supports a wide range of voltage inputs, with a default output voltage of 53.5V and a rated output power of 3000W. The output power is 1200W at low voltage input. The power … Read more