Is it really possible to build a rotary encoder out of a flattened tin can and

Is it really possible to build a rotary encoder out of a flattened tin can and a couple of photodetectors? Sure it’s possible, but what kind of resolution are you going to get from such a contraption? Is there any way that you’d be able to put them to work in a DIY project like a CNC router? If you pay attention to the basics then the answer is yes, and [HomoFaciens] wants to prove that to you with this detailed video on homebrew encoder design. Faithful Hackaday readers will no doubt recognize [HomoFaciens] from a number of prior appearances on these pages, including this recent hardware store CNC router build. When we first ran across his builds, we admit a snicker or two was had at the homemade encoders, but if you watch the results he manages to get out of his builds, you quickly realize how much you can accomplish with very little. The video is a primer on encoder design, walking you through the basics of sensing rotation with phototransistors, and how a pair of detectors is needed to determine the direction of rotation. He also discusses the relative merits of the number of teeth in the chopper; turns out more isn’t necessarily better. And in the end he manages to turn a c...

Indian food truck K2 Cuisine a vibrant treat | Dining Reviews | Colorado Springs

You should have seen Koushik Mondal’s face at May 5’s Food Truck Cook-Off, outside the Broadmoor World Arena. Though he’s been operating the Springs’ only Indian food truck, K2 Cuisine, for the last year, he apparently hadn’t been exposed to so many enthusiasts all at once, to the point where he appeared emotionally overwhelmed by the positive feedback on samples he was handing out. People were pumped on his food and he was pumped on that — he wore a big smile and a look of wonder tamed by humility. Later in the day, the judges selected by the hosting Small Business Development Center — myself plus James Africano of The Warehouse and Tyler Peoples of Springs Rescue Mission — awarded Mondal second place out of 32 entrants for one of his chicken wrap variants. He was overjoyed, perhaps feeling validation for years of hard work that brought him to this moment, when the general public and fellow chefs and industry folks confirmed what he already knew: His food kicks ass.  Mondal hails from Calcutta, which I can personally attest has a boisterous street-food scene; so a food truck concept here’s more than fitting for distributing the vibrant panoply of spice that comprises Indian cui...