When Google Glass launched in 2013, the public opinion seemed to be “interesting technology, but the world isn’t ready yet.” Now that more than a decade has passed, the world may finally be ready — especially with the omission of controversial features like video recording. If that appeals to you, then Akashv44 has a great […]
Every maker should have a bench power supply in their possession, ready to provide whatever voltage a project or particular component requires. But not all bench power supplies are created equal. Some only have a single output, some have a limited voltage range, and some can’t handle much current. In an attempt to eliminate such […]
If you’ve ever tried to produce an analog video signal with an Arduino, then you know that it isn’t easy. That’s a bit counterintuitive if you think of analog video as “old” and assume that generating an analog video signal would be trivial with our powerful modern hardware. But there are many ways in which […]
How do unstable things stay upright? True passive balancing is very difficult and isn’t dynamic, so it doesn’t help when there is movement. Active balancing is all about inertia and this is how a tightrope walker can traverse a chasm by making small adjustments with a long pole. This is the same principle behind “self-balancing […]
When you hear the word “joystick,” you probably think of the standard dual-axis joysticks that we see on video game controllers. As the name implies, those move and provide signals for two axes (X and Y). But there is no reason that a joystick needs two axes and, in fact, that may not be desirable. […]
The Tesla coil, patented by legendary inventor Nikola Tesla in 1891, is a kind of resonant transformer circuit capable of producing sparks of high-voltage alternating-current electricity. They don’t have many practical uses today beyond novelty, but they were commonly used in spark-gap radio transmitters in the early 20th century. The sparks generated by a Tesla coil […]
If you have an interest in robotics, it can be really difficult to know where to start. There are so many designs and kits out there that it becomes overwhelming. But it is best to start with the basics and then expand from there after you learn the ropes. One way to do that is […]
It is amazing how much technological progress humanity has achieved over the past few centuries. But while our capability with electronics has shot ahead, it seems that we’ve almost regressed when it comes to mechanical and electromechanical design. Watches and clocks are great examples of this, as pre-digital craftsmen were capable of astonishing feats that […]
If you’re ever driving through rural Finland about an hour south of Jyväskylä, you might come across the Haihatus art center. That includes KITA, “the house of kinetic arts.” You’ll recognize it right away by its bold swaths of vibrant paint. And if you come by at night, you’ll see the snow illuminated in dancing […]
Henry Evans suffered a brain-stem stroke 20 years ago that left him paralyzed with quadriplegia. He can move his head, but other than a small amount of movement in his left thumb, he can’t control the rest of his body. To help Evans live a more independent life, researchers from Carnegie Mellon University’s School of […]
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