Nitrogen is critical for farming at scale and without some form of nitrogen to enrich the soil, we couldn’t grow staple crops efficiently enough to feed our large global population. Serious science goes into the production of fertilizers and the Birkeland-Eyde process was one early example. It uses electrical arcs to turn nitrogen in the […]
Guinness is one of those beers (specifically, a stout) that people take seriously and the Guinness brand has taken full advantage of that in their marketing. They even sell a glass designed specifically for enjoying their flagship creation, which has led to a trend that the company surely appreciates: “splitting the G.” But that’s difficult […]
A small startup called K-Scale Labs is in the process of developing an affordable, open-source humanoid robot and Mike Rigsby wanted to build a compatible hand. This three-fingered robot hand is the result, and it makes use of serial bus servos from Waveshare. Most Arduino users are familiar with full-duplex serial communication, which requires two […]
“Single-point threading” on a lathe is the process of cutting threads, such as for a bolt, into the material through turning. The spindle/workpiece spin and the carriage moves linearly at a precise amount per turn of the spindle. That linear movement is the thread pitch. But this process usually requires several passes to reach the […]
Pianos famously have a lot of keys. A standard full-size piano has 52 white keys and 36 black keys, for a total of 88. Therefore, people need to get clever when they build self-playing pianos. However, the brute force approach works, too. Paul Junkin’s brute force strategy was to add a solenoid for every one […]
We are proud to announce the Made-in-India UNO Ek R4! Available exclusively in India in both WiFi and Minima variants, it is born to meet the needs of the country’s growing maker and innovation ecosystem, by combining all the powerful features of the UNO R4 with the benefits of local manufacturing, enhanced availability, and dedicated […]
Server rooms are built for the comfort of servers — not people. But those servers need maintenance, which means they need to be accessible. The resulting access corridors take up room that could be filled with more servers, which is why Jdw447 designed a claw machine-esque ‘modular server room’ and built a working scale model […]
2011’s Real Steel may have vanished from the public consciousness in a remarkably short amount of time, but the concept was pretty neat. There is something exciting about the idea of fighting through motion-controlled humanoid robots. That is completely possible today — it would just be wildly expensive at the scale seen in the movie. But MPuma […]
Lab equipment is — traditionally at least — tremendously expensive. While there are understandable reasons for those costs, they are prohibitive to anyone operating outside of a university or corporate lab. But as the “citizen science” movement has grown, we’ve seen more and more open-source and affordable designs for lab equipment hitting the internet. The […]
The Arduino UNO is legendary among makers, and with the release of the UNO R4 in 2023, the family gained a powerful new member. But with two incredible options, which UNO should you pick for your project? Here’s a breakdown of what makes each board shine, depending on your needs, skills, and goals. Why the […]
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