Technology

Hardware, software, networking, and development

1807 episodes 8 topics RSS Feed

The nuts and bolts of the digital world. Whether it's building a home lab, debugging Linux on the desktop, untangling networking nightmares, or figuring out why that Docker container won't start, this channel covers the hands-on side of technology that keeps everything running.

#5760: Pinterest Is a Pointer, Not a Backup

A Pin is a URL with a thumbnail, not a picture. If you're archiving images instead of mood-boarding them, that distinction matters.

digital-preservationdata-storagedata-redundancy

#5759: Why Servers Have Two Power Cords

Dual-corded servers, transfer switches, and the layered engineering behind keeping data centers online.

data-redundancyhigh-availabilitypower-supply-units

#5758: Why Your Outlet Is 120 Volts and Europe's Is 230

The US isn't really a 120-volt country — it's 120/240 split-phase. Here's the engineering logic behind the numbers on your panel.

electrical-engineeringhardware-standardspower-supply-units

#5757: Why the Grid Still Runs on AC When DC Won

Every reason AC beat DC has been overturned by power electronics. So why is your wall socket still AC?

electrical-engineeringinfrastructurepower-supply-units

#5756: The Blue Plug That Out-Engineers Your House

The blue 230V IEC 60309 connector is tougher than anything on your wall — but the fuse problem and a BS 7671 quirk complicate the swap.

electrical-engineeringhardware-standardsingress-protection

#5754: Your Home Rack's Power Problem, Solved

Data centers look immaculate, your rack looks like a raccoon got into a cable box. Here's what actually transfers from pro PDUs to home.

power-supply-unitshome-labhardware-engineering

#5753: Unpacking as a Warehouse Problem: Sorting vs. Tagging

Daniel's move is done but nothing's findable. The fix is a warehouse putaway problem — and his IKEA bag is the slowest possible tool.

logisticsergonomicshome-lab

#5749: From Sand to Trillion-Dollar Chips: Semiconductors in 5 Levels

A bad conductor and a bad insulator — and the most important material in civilization. Semiconductors explained in five escalating levels.

semiconductorselectrical-engineeringmaterial-science

#5748: What's Actually Inside an eSIM Adapter

An eSIM adapter isn't a converter — it's a eUICC chip in a SIM shell. Here's the silicon, the certificates, and the open source tools underneath.

esimtelecommunicationsopen-source

#5747: Jamming Drones: The Physics of the Wearable Skylock Kit

How does a vest-sized jammer take on frequency-hopping drones? The inverse-square law, spread spectrum, and why jamming reaches farther than detect...

electronic-warfaresignal-processingdefense-technology

#5746: Why Power Tool Cords Are So Short

Nobody regulates that stubby cord — it's container math. And making it longer can actually make your tool more dangerous.

electrical-engineeringsupply-chainergonomics

#5745: Why Europlugs Fit Israeli Sockets So Badly

A 2.5-amp plug, a 16-amp socket, and half a millimeter of interference. The physics of a connection that was never meant to hold.

electrical-engineeringhardware-standardsergonomics

#5744: Blue Tools, Green Tools: Inside Bosch's Channel Strategy

Why Bosch sells two tool lines under one name — and why the green one wasn't sold in America for decades.

supply-chaininternational-tradeindustrial-automation

#5743: Why Claude Keeps Saying "Prior Art

Daniel noticed "prior art" creeping into his Claude reports. Is it wrong — or just a prestige term the model learned to love?

prompt-engineeringfine-tuninganthropic

#5741: The Bulb That Lit the 20th Century

From Edison's carbon filament to the blue LED that unlocked white light — how we got from 1 lumen per watt to 150.

material-sciencesemiconductorslighting-design

#5740: Your Vacuum's Best Upgrade Is the Head

Most people use 30% of their vacuum's capability. The cheapest fix isn't a new machine — it's the nozzle on the end.

hardware-standardsright-to-repairergonomics

#5739: Why Your Vacuum Is Legally Weaker Than a Shop Vac

A toddler, a Bosch, and an EU power cap: why the consumer vacuum in your closet is legally weaker than the dust extractor at the tool shop.

right-to-repairhardware-standardsindustrial-automation

#5737: Why Measuring a $4 Spudger Tip Is Weirdly Hard

A listener wants to put a number on his spudger's tip thickness. Turns out that's a real metrology problem.

precision-engineeringmaterial-sciencehardware-engineering

#5735: The Breaker Protects the Wire, Not You

How service size, load calculations, and the 80% rule actually determine what your outlets can deliver.

electrical-engineeringpower-supply-unitshome-safety

#5734: USB Amps: What Actually Happens When You Plug In

Your device pulls current, it doesn't get pushed — and that changes everything about picking USB adapters.

electrical-engineeringhardware-standardspower-supply-units