Brief history and potential future of knitting from Gizmodo:
Advanced knitting offers something past seamlessness approaching invisibility. Not only does it enable clothing makers to hide hard electronics, it even lets them create electrical components from the actual yarn—sensors that are an integral part of the garment and not tucked in or laminated on top.
For example, a knit machine programmer can create a small “patch” of conductive yarn, stack a non-conductive above it, and then another conductive patch on top of that to make a sandwich. As the two conductive sections get closer together, they make more and more contact through the non-conductive but porous sandwich “filling.” This increased conductivity can be measured by a microchip to create a pressure sensor which, when built into a sock, could measure stride and footfall for runners or balance indicators in elderly patients who are prone to falling.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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