The NFC / RFID chip is the size of a grand of sand. It’s equipped with a tiny antenna and encased inside a glass capsule to keep it from being disrupted by its fleshy environment. This chip stores 1KB of data and is readable like a key fob by compatible phones, tablets, card readers and the Arduino microcontroller.
“It’s usually used for privacy, but I use it for a public purpose, which is to distribute artwork,” the artist explains. He hovers his Android 1-2cm above the clotted cut, and up pops his favicon, a signature Antonellis gradient gif.
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.