Technology
Hardware, software, networking, and development
#4191: How to Build a Kid-Safe Electronics Workshop
Teaching electronics to curious kids without the electrical risks — low-voltage DC, breadboards, and smart separation strategies.
#4190: LoRa Through Concrete: Real-World Parking Sensor Physics
Why your LoRa parking sensor can't reach through three floors — and how to fix it.
#4186: Alibaba’s B2B Engine: The $200B Trade You’ve Never Heard Of
Alibaba.com moves 2-3x more value than AliExpress, quietly becoming global trade’s operating system.
#4185: LiFePO4 Batteries: The Workhorse Chemistry for DIY Projects
LiFePO4 lasts 10x longer than lithium-ion. Here's how to choose, connect, and charge it for your build.
#4184: What Actually Stops $700M: Sovereign Payment Plumbing
How a single authorization code in a central bank database stopped 700 million shekels from moving.
#4183: Stacking Three Devices Into One Superphone
What if the best phone isn't a phone at all? Stacking a modem, battery, and handset into one brick.
#4178: DIY ISP Quality Dashboard Tools
Measure your real internet performance with self-hosted tools. No ISP speed tests, no guesswork.
#4175: What a Procurement Agent Actually Does for Small Importers
Why Daniel's two pallets of boxes can't be handled by a 3PL — and the service category that fills the gap.
#4173: DDP Doesn't Mean Doorstep Delivery
Why your DDP pallet won't arrive at your house — and how fulfillment centers fix it.
#4171: What a $30 Box Teaches Us About Supply Chains
Why a plastic tote costs $0.50 at the factory but $30 at the store — and no one is ripping you off.
#4161: How Your Password Manager's 6-Digit Code Actually Works
Your phone and a server generate the same code without ever talking. Here's the elegant math behind it.
#4160: Why That "Dry" Wine Tasted Like Flat Coke
The chemistry of why "dry" on a label doesn't mean what you think — and which grapes deliver the real deal.
#4159: Managed vs Unmanaged Switches: What You Actually Need
What does "managed" actually mean on an Ethernet switch? And do you need it at home?
#4155: Where Does the Guest VLAN Actually Live?
The VLAN lives in the firewall, not the AP. Here's how to actually segment your guest network.
#4154: Wi-Fi Settings That Actually Matter
What those Ubiquiti controller settings actually do—and why maxing everything out breaks your network.
#4151: KVM Over IP: Remote Server Access When SSH Dies
What do you do when your server is alive but unreachable? KVM over IP hardware gives you BIOS-level access from anywhere.
#4150: Computing's Hidden Price Surge: DRAM, NAND & GPUs
Why your next PC build costs 32% more than two years ago — and why no one tracks it.
#4149: How a Tobacco Shop Becomes Your Mailman
How AliExpress parcels move from Shenzhen to a Tel Aviv tobacco shop for $3 — and who gets paid along the way.
#4147: When Your Server Won't Even Boot a Live USB
Diagnose a dead server when it won't boot anything — not even SystemRescue from USB.
#4144: Nuns on AliExpress: Ancient Rules for Modern Tech
What a nun picking up a package in Jerusalem teaches us about attention, technology, and intentional living.