Quick-reference (QR) codes are similar to barcodes, as they are able to encode data that is represented by black and white squares. But instead of using a laser, a camera differentiates between the spaces and then sends that information to be processed. They are comprised of several large squares that help to align and position the edges of the QR code, formatting columns, a version number, and finally, the data itself.
Why “Fishino” ? The names comes to a joke made on April Fools’ Day (in Italian “Pesce d’Aprile“, and ‘Pesce‘, which sounds ‘pashe’ means Fish) made on an Arduino forum where we “presented” a new board named “Fishino Zero” which had revolutionary technical specs. The symbol, placed on board’s picture with a graphical editor,…
Would you write your password on a piece of paper and stick it to your forehead? Probably not. Yet connecting to a public Wi-Fi network is almost as foolish. You might not have any choice, however, if you’re on the road and want to stay connected. A VPN can keep you safe, but each device has…
3D printing, and its ability to create perfect replicas of microscopic particles and blow them up to thousands of times their original size, has also enabled researchers and students to study things like pollen, for example, in a tactile way that wasn’t previously possible. At the other end of the spectrum, 3D printing can scale the…
By making use Raspberry Pi, we created an easy to build 3D scanner to be used for the acquisition of three-dimensional models via a video camera and a laser 3D printing keeps on establishing itself, mostly thanks to the availability of more user-friendly 3D printers and price drops. Those who use a 3D…
Max Williams has just shared on Hackster.io schematics, PCB layouts, CircuitPython code via GitHub, BoMs, measurements and photos about his new open source modular HiFi amplifier. It uses an Adafruit ItsyBitsy M0 Express running CircuitPython to make great music. The preamplifier is made up of a number of connected components: MDAC attenuator (PCB, code): Controls the volume Input selector (PCB, code):…
Today we introduce you a robot fish that is able to swim and recognize tank edges and obstacles. We’ll find out how we can easily create it with common insulating material and a few servo motor controlled by Arduino. [iframe_loader src=”http://www.youtube.com/embed/HUIy6XApZos?hl=it&fs=1″ height=”349″ width=”425″ ] The mechanical part For the fish body we used common polystyrene…
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