Mood-controlled RGB light wall

Mood-controlled RGB light wall

In the build shown below, Evan McMahon dares to ask the question, “Have you ever been disappointed by a mood ring?” While that might seem a bit random, the answer is a likely “yes” if you’ve ever worn one with the expectation of any sort of accuracy.

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Simple PID control intro device

Simple PID control intro device

You may have come across the term “PID control,” and while this proportional-integral-derivative control method does a great job of smoothing out oscillations, where does one get started? 

One solution would be Mr Innovative’s demo device, showcased in the video below.

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Stream weather conditions to the cloud!

Stream weather conditions to the cloud!

Weather reports on the news, your computer, or smartphone are very good—something that people 100 years ago could only dream of—but what if you want to know the exact weather in a fixed location from anywhere in the world? One solution would be Jakub Nagy’s excellent cloud-connected station.

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Ariadne Headband is a wearable device for haptic navigation

Ariadne Headband is a wearable device for haptic navigation

In a new take on haptic navigation, makers Vojtech Pavlovsky and Tomas Kosicek have come up with a novel feedback system called the “Ariadne Headband.”

This device—envisioned for use by people with visual impairments, as well as those that simply want to get around without looking down at a phone while walking or biking—uses four vibrating motors arranged in a circle around the wearer’s head to indicate travel direction.

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Robust wheelchair model with treads!

Robust wheelchair model with treads!

Most people accept that a wheelchair is, in fact, a chair with wheels. This, however, didn’t stop recent Galileo Galilei Technical Institute graduate Davide Segalerba from turning this concept on its head and producing a “wheelchair” scale model driven instead by a pair of treads.

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Arduino-Controlled Signal Attenuation

Arduino-Controlled Signal Attenuation

There are many ways to modify analog and digital electrical signals, but things get a bit more complicated—or at least specialized—when working with coaxial signal transmission. To this end, Kerry D.

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