A CT (computed tomography), or CAT (computed axial tomography), scan is a type of medical imaging technique in which multiple X-ray “slices” come together to form a pseudo-3D model. CT scanners are the kinds of medical equipment that are so expensive that manufacturers don’t even bother listing prices on their websites. Suffice it to say The post Affordable CAT scan machine built with an Arduino appeared first on Arduino Blog.

All digital communication ultimately comes down to transmitting ones and zeroes, but there are many ways to achieve that. One can encode that binary data as modulation in a radio signal or simply pulse electricity through a wire. But one of the most interesting methods is optical. Flashing a light is a great way to The post Building a DIY laser modem appeared first on Arduino Blog.

AC (alternating current) meters are useful tools for measuring power draw. One might use an AC meter to monitor the power consumption of their devices and appliances with the goal of lowering their energy bill. Makers in particular can benefit from AC meters to learn about the power consumption of their own projects. Basic AC The post This high-precision AC meter handles inductive loads appeared first on Arduino Blog.

Those cheap wire-arm head massagers are great at giving your scalp a nice, relaxing rub. But they’re handheld implements that force the user to either manipulate the massager themselves or talk a partner into performing the task. David McDaid decided that the experience would be much more pleasant if a robot took care of the The post Over-engineered robotic scalp scratcher knows all the moves appeared first on Arduino Blog.

Stepping on LEGO bricks is a meme for a reason: it really @#$%&! hurts. LEGO brick design is ingenious, but the engineers did not consider the ramifications of their minimalist construction system. We’ve seen people do crazy things for Internet points, such as walk across a bed of LEGO like they’re hot coals — or The post LEGO-firing turret targets tender tootsies appeared first on Arduino Blog.

Every car sold in the last few decades is equipped with an engine control unit, or ECU for short. Its job is to control nearly every aspect about the vehicle’s performance by reading various sensors and acting upon those inputs accordingly. However, some older rides aren’t nearly as performant as they could be, which is The post Reducing automotive fuel consumption with an Arduino appeared first on Arduino Blog.

Air cleaners are indispensable appliances in shop environments. Fine sawdust in the air can, for example, cause a variety of respiratory ailments in woodworkers. Even if the tool itself has a vacuum collection system, dust will fill the air. But air cleaners are noisy and require quite a lot of power, which means that most The post This air cleaner activates when it hears shop tools running appeared first on Arduino Blog.

The Citroën C-Zero is an electric city card sold in the European market. It is a rebadged Mitsubishi i-MiEV, which is based on the Mitsubishi i kei car platform. Kei cars, in Japan, are a special class that receive government and insurance benefits for being so small. As a result, the C-Zero is tiny and The post Adding a battery gauge to a Citroën C-Zero electric car appeared first on Arduino Blog.

There was a period in the late ‘70s and into the ‘80s when typewriter manufacturers tried to keep up with the tide of the digital age. Personal computers were hitting prices that middle-class families could justify and even the most basic models were far more practical than the best typewriters on the market. During this The post Reading typewriter key presses with an Arduino appeared first on Arduino Blog.

With the increased capabilities of Arduino and other microcontroller boards, including faster clocks or even multiple cores, the need to handle multiple tasks simultaneously arises more often than in the past. For instance, you often want to control motors, update a display and detect user interactions at the same time, or perform tasks that have The post Introducing multitasking to Arduino appeared first on Arduino Blog.