3D printing, the stuff of science fiction only a few short years ago, is becoming more widely available all the time. Buying your own 3D printer to keep in your home is now fairly accessible, with entry-level printers available for just a few hundred dollars. But why would you buy one? It’s easy to think […]
There are few beverages on this planet that enthusiasts take more seriously than espresso. Aficionados care about and tune everything from steam pressure to bean roasting temperature. But espresso machines that provide both accurate and precise adjustments are very expensive — easily several thousand dollars. Fortunately, you can tackle the Gaggiuino project to upgrade an […]
We’re excited to announce the launch of the new Arduino IoT Bundle. This is built to help you dive into the complex and fascinating world of the Internet of Things with even more confidence and possibility — giving you the hardware, software, and components you need to create your own connected IoT projects. So how […]
Robert John likes to keep a constant eye on the current temperature and humidity of his room, as even small fluctuations can lead to uncomfortable conditions. And although he can remotely turn the air conditioning on or off, he still needed a way to track these values throughout the day and log them for future […]
Green (unroasted) coffee beans cost about half as much as their roasted counterparts. By purchasing green coffee beans, you can save quite a bit of money in the long term. Roasting your own coffee beans also gives you much greater control over the flavor profile and caffeine content of your coffee (caffeine content is a […]
Measuring vacuum works in the same way as measuring any other gas pressure, because a perfect vacuum is unachievable and so it is a measure of how close to zero the air pressure inside a container becomes. But typical pressure gauges aren’t meant to measure pressures below ambient atmospheric pressure (vacuums). That requires special sensors […]
Light painting is a photography trick that exploits a camera’s shutter. To ensure proper exposure in different lighting conditions, cameras have variable shutter speeds. If the subject is well-lit, then the shutter may only remain open for ten or so milliseconds. But if the subject is very dark, then a photographer may choose to leave […]
Until the proliferation of digital photography, film slides were a common way to share photos. After a nice vacation in the ‘70s, you might take your film rolls for development and would have the option to receive a set of slides. You could then gather all of your friends in your living room, pop those […]
We’re currently seeing something of a technological blitzkrieg as corporations and engineers attempt to solve the problem of tactility in virtual reality (VR). Modern VR headsets provide quite realistic visual and auditory immersion, but that immersion falls apart when users find themselves unable to physically interact with virtual objects. Developed by a team of National […]
A large number of diseases involve coughing as one of their primary symptoms, but none are quite as concerning as chronic obstructive pulmonary disease (COPD), which causes airflow blockages and other breathing problems in those afflicted by it. Consistently monitoring the frequency and intensity of coughing is vital for tracking how well the disease is […]
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