What Are These Gross Brown Spots on My Bathroom Walls?

If you live in an older house that had a lot of different residents move in and out over the years, there’s no doubt that the place has a lot of “character”, but one mystery that has been stumping me for some time now are these gross brown spots and streaks on my bathroom walls.

How to Manage Your PC’s Fans for Optimal Airflow and Cooling

Building a modern desktop PC is surprisingly easy, thanks to modular parts and a lot of solid engineering. It’s often explained as “LEGO for adults.” But managing the air cooling system within a PC is considerably more complex.  We’re talking about physics, thermodynamics, all sorts of fun stuff. But there are a few basic principles you can apply to almost any build to get optimal airflow, and thus, optimal cooling.

Why Does Lumber Sometimes Look Twisted and Warped?

If you’ve ever gone to the hardware store to buy lumber to build that DIY desk or home theater center, you’ve probably come across your fair share of warped and twisted boards before you finally landed on a decent-looking 2×4. Here’s why that is.

How to Replace Your Laptop’s Keyboard or Touchpad

Barring any kind of accidental damage, your laptop’s keyboard and touchpad are the parts that start to show wear as soon as you use them. Not only are they some of the only moving parts left in modern laptop design, they’re the ones that are constantly being touched by us fleshy humans, absorbing tiny amounts of skin oil and wearing away the legends on the keys. After a year or so, the keyboard deck can start to look noticeably aged.

How to (Possibly) Save a Laptop from Water Damage

It’s every laptop owner’s nightmare: a carelessly spilled cup of coffee. A sudden shower when you’re working outside. Heaven forbid, some kind of farcical bathroom tumble when you really had to get that TPS report in. Conventional wisdom says that a soaked laptop is a dead laptop, but that doesn’t necessarily have to be true, especially if you have a few tools and a lot of patience.

The Pros and Cons of Building a Mini-ITX Gaming PC

In the immortal words of Jacobim Mugatu, mini-ITX gaming PCs are “so hot right now.” While home-assembled gaming computers have generally been focused on the larger mid-tower ATX standard for decades, a recent wellspring of tiny, powerful components have made more compact builds worth considering.

How to Set Up Google Cardboard on an iPhone

Want to see what this VR thing is about, but don’t want to plop down a bunch of cash? Google Cardboard is an insanely cheap way to try it out. And, despite being a Google product, it works on iOS as well as Android. Google is fair, y’all.

How to Use Smarthome Door Sensors Around Metal

Open/close sensors, like those included with the Samsung SmartThings kit, are great for automating certain actions whenever doors or windows are opened. But if you’re having trouble getting them to work well, it might be because the metal on the door or window is causing issues with the magnet system that’s used on the sensors. Here’s how you can get around that.

How to Replace an Outlet That’s Controlled by a Light Switch

In some houses, light switches on the wall might control individual outlets, where you can plug in lamps and other lights. They’re really convenient, but if you ever need to replace that outlet, there are some important things you’ll need to keep in mind. It’s not the same as replacing any other outlet.

How to Build a Sunrise Alarm Clock on the Cheap

Sunrise-simulating alarm clocks are a great way to wake yourself up in the mornings, but commercial sunrise simulators are ridiculously expensive. Read on as we show you how to turn a smart bulb starter kit into a sunrise simulator (and enjoy the benefits of smart bulbs at the same time).

How to Upgrade Your Computer to USB 3.0

Whether you’re sporting an older computer without a single USB 3.0 port or you’d like to expand and improve the roster of USB 3.0 ports on your newer computer, we’re here to help. Read on as we outline how to pack in all the USB goodness you crave with back, front, and case ports.