Artificial climbing walls are important for training, as few people can get to real rock walls regularly enough to keep up with practice. But like anything else, that can become boring if you’re just doing the same thing over and over again. To keep things fresh and fun, Superbender turned his indoor climbing wall into […]
When you buy a 3D scanner, it will probably come with a turntable to spin the subject part and help you get a consistent scan from all sides. But almost all of those turntables are flimsy, shaky, and lack any fixturing provisions for parts, diminishing their utility. That’s why Chris Borge used an Arduino to […]
Topgolf has a pretty brilliant business model: let golfers do the fun stuff (driving balls at max power), without any of the complications, time commitments, or logistics of running through a full 18-hole course. Batting cages exist to do something similar for baseball, but Pete LeMaster didn’t want to practice batting — he wanted to […]
In the world of machining, there are manual tools and then there are CNC tools. But there is also an option that exists between those two extremes, called “conversational programming.” That lets operators create complex programs by extrapolating from something simple, such as a radial pattern of a milled pocket. These WORM collaborative robots from […]
Most of us get our news via the internet these days, which is only natural given the convenience and availability. But during an emergency, such as weather extreme enough to cause power or network outages, the internet may be inaccessible. How do you learn vital information in that scenario? The answer is with good old-fashioned […]
In the worlds of programming and robotics, turtles are entities — either virtual or physical robots— that follow commands to move around a 2D plane. Those are usually very simple commands, such as “move forward 10 units” or “rotate 90 degrees clockwise,” and they help people learn some programming fundamentals (like Logo in the ’80s!) […]
Mehdi Sadaghdar, better known as ElectroBOOM, created a name for himself with shocking content on YouTube full of explosive antics. But once you get past the meme-worthy shenanigans, he is a genuinely smart guy that provides useful and accessible lessons on many electrical engineering principles. If you like your learning with a dash of over-the-top […]
In the distant past of about two decades ago, one would need to use a KVM (Keyboard, Video, Mouse) switch to control multiple computers with the same mouse and keyboard — and even then, it would take a button press to move from one to the other. Today, Apple’s Universal Control feature lets users seamlessly […]
A physical lock, like what secures your front door, has a finite and calculable number of combinations, just like a digital keypad does. There are a set number of pins in the lock and each can be one of a set number of lengths. Each of those numbers varies based on manufacturer and model, but […]
If you need to move fluid from one vessel to another, you’re probably going to want a pump of some kind. Typical inexpensive pumps are usually only on or off, so you can’t easily control the flow rate. Those that do have some kind of analog adjustment are usually imprecise, which is a problem in […]
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