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230 videos · Technology Connections

• Nobody understands the point of hybrid cars
• The disappearing and unappreciated art of audible alerts
• Oil pressure is the only thing keeping an engine alive
• You are being misled about renewable energy technology.
• I made my whole-home humidifier slightly less terrifying
• It's the Christmas light video again - 2025 edition
• My car charger can boil water really fast
• This cassette player is built into an 8-track cartridge
• I was right about dishwasher pods, and now I can prove it
• Video projectors used to be ridiculously cool
• Catalytic converters are simple, but getting them to work is not
• Desiccant dehumidifiers are fascinating... but not for everyone
• VHS-C: a lazy idea that's also perfect
• Induction lamps: fluorescent lighting's final form
• The "standard" car charger is usually overkill—but your electrician might not know that
• Closed captions on DVDs are getting left behind
• Dehumidifiers are confusing. Here's why.
• Power is not energy: why the difference matters
• Algorithms are breaking how we think
• The clever feature that makes cheap heaters safe — and why they're actually dangerous
• I tricked my car charging station into powering a 7.5 kW heater
• LED Christmas lights which don't hurt the eyes: it finally happened!
• How much thrust does a ceiling fan produce?
• Balafire: when a light bulb goes wild
• Air fryers are simpler than you think, but still pretty neat
• I bought a freeze dryer so you don't have to
• MP3 CDs: a hybrid "format" that never existed, yet was surprisingly common
• Duracell PowerCheck: A genius idea which didn't last that long
• Thermoelectric cooling: it's not great.
• Induction cooking - but what about woks?
• Door closers: ubiquitous, yet unloved and often maladjusted
• Passive infrared motion sensors: a two-bit camera powered by crystals
• Awnings: a simple cooling tech we apparently forgot about
• The Numitron: An obvious idea that wasn't very bright
• Your dishwasher is better than you think (tips, tricks, and how they work)
• Tilting, taking turns, and winning free games: the many tricks inside old pinball machines
• The simple, clever sensor behind automatic windshield wipers
• Simmerstats: The genius old tech that controls your stovetop
• Bright from the Start: GE's CFL with an incandescent trick up its sleeve
• Old HVAC industry practices are holding us back and costing us money. But we can fix it.
• Flash photography used to be pretty wild
• The step-by-step, mechanical logic of old pinball machines
• LED Christmas lights still annoy me. Let's try some more fixes.
• What's the deal with the popcorn button?
• The Clapper: Yes, that one.
• Back-up beepers: Obnoxious, but getting better - and spreading!
• Old pinball machines are amazingly complex
• Power outlets are topsy turvy - but does it matter?
• Photoelectric light controls are weirder than they seem
• Tesla won the plug war - and that's good news!
• Longer-lasting light bulbs: it was complicated
• This goofy fridge has a really clever design. It's also kinda terrible.
• Digital audio needed videotape to be possible - and the early days were wild!
• Electric cars prove we need to rethink brake lights
• Sony Betacam: Not the Beta you're thinking of (it's way better)
• Contactors: how we power the big stuff
• Plug-n-play solutions for home electrification, and options for power outages (Part 2)
• How do vinyl records hold stereo sound?
• Home Electrification: There's not a lot to do, and it doesn't have to be hard (Part 1)
• A simple water heater is more clever than it seems
• Timer switches: literally just a clock and a switch
• Movies made sound with a light bulb: Sound-on-film
• The decorative lamp that's built wrong on purpose
• In Defense of the Switched Outlet
• The clever camera code on rolls of film
• This TV gadget censors bad words with 1980's tech
• Old car headlights were all the same — which was a fairly bright idea
• This 1960's camera is powered by light and completely automatic
• A Complete Beginner's Guide to Electric Vehicles
• Drip Coffee Makers — super simple, super cheap
• The correcting feature of typewriters is not what I thought
• There are two types of smoke alarm. One of 'em ain't so good.
• Is Philips discontinuing their coolest warmest product?
• Why don't Americans use electric kettles?
• The tech which can charge an electric car in 10 minutes
• The Autochrome; Color photos? Just add potatoes.
• Heat Pumps are Not Hard: Here's what it will take to start pumping
• Why Heat Pumps are Immensely Important Right Now
• A troubling trend in lighting?
• Lessons from a Can Opener
• A Backwards Camera in a Dark Room - Photographic Printing
• Once again I attempt to add polish to LED holiday lights
• This digital piano has some very clever controls
• Making Film Reveal its Image: the B&W Development Process (Photography Part 2)
• The Birth of Photography: Drawing With Light (and silver iodide)
• Holey Plugs, Batman! But... what are they for?
• Introducing a new series! Connextras: Sights and Sounds
• I messed up. You're using too much detergent.
• Why it's not possible to synchronize turn signals (but also absolutely is)
• Pressure lamps: gaslighting on the go
• Batteries aren't the only way to store energy. Here's another.
• How the gas mantle made lamps 10X brighter
• Why do hurricane lanterns look like that?
• Perhaps the weakest link in the US electrical system
• What the Crookes Radiometer can teach us
• Analog Hygrometers - how?
• These digital clocks aren't digital at all
• Ground Source / Geothermal Heat Pumps and Other Info
• In Defense of the CFL: A Retrospective
• Heat Pumps: the Future of Home Heating