A tachometer is a device that counts the revolutions of a rotating object, with the most well-known example being the automotive tachometer that monitors the revolutions per minute (RPMs) of an internal combustion engine. But tachometers are useful, and sometimes a requirement, in many other applications. RPM is a very important datum when working with […]
At the shallow end of the pool, a MIDI (musical instrument digital interface) controller can be as simple as a handful of buttons that correspond to different notes. But even as one wades into the deep end of the pool, MIDI controllers tend to still look like hunks of plastic with some knobs and keys. […]
All makers love lasers and they make great shop tools. Even low-power lasers can engrave a variety of materials. Cutting material requires more power, with the most popular cutting lasers being CO2 with power between 10W-100W. But the small, affordable solid state laser modules can cut some materials, like acrylic, if you get a powerful […]
Even if you’re one of the few people in the world who is consistent about wearing a respirator in the shop, it’s a good idea to run a filtration fan. Not only is that good for your own health and comfort, it can help keep your equipment running well — the last thing you want […]
By Maria Nikoli, Interaction Designer, MSc., Malmö University Smelling is crucial to our everyday living. But how well do we really understand the role that smells play in our day-to-day? Ask someone who temporarily lost their sense of smell because of COVID-19. They’ll probably tell you about how incredibly boring eating became all of a sudden, […]
Mark Rober isn’t just a talented mechanical engineer and entertaining personality, he is also something of a champion of justice for the common man. He’s already proved that several times with his famous yearly porch pirate-targeted pranks, but now he’s taking on the corrupt fat cats running arcades for children. Those arcades are often full […]
Cooking is something many of us love to do at home. There are few feelings more rewarding and satisfying than throwing together a delicious meal in your own kitchen and sharing it with family or friends. However, cooking can be tough. There are lots of things to pay attention to, lots that can go wrong, […]
Nighttime photography, and especially astrophotography, requires very long exposure. To get a good picture of the stars, you might leave the shutter open for several minutes. That gives nature plenty of time to produce dew on your lens, which can ruin the photo. The solution is a lens heater, but running that heater all night […]
Mechanical advantage is arguably the most important engineering concept that humanity has ever learned to harness. By converting distance, like the length of a lever or rotations of a gear, into torque (and vice versa) we can overcome almost any physical challenge. But that distance can be an issue. For example, if you have an […]
Vehicles powered by hydrogen fuel cells combine the benefits of battery-powered electric vehicles and internal combustion engines (ICEs). You get the environmental and performance benefits of electricity, with the same refueling convenience as you get with ICE vehicles. But for most of us, hydrogen fuel cells are still mysterious and unattainable. In reality, you can […]
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