How To Make an Inductive LED Ring #WearableWednesday
A ring that is sure to shine! shared by Make It And Fake It on YouTube, with instructions on Make:
This ring contains and LED connected to a wire coil. When the wire coil is properly aligned with an electromagnetic field, the LED will light up. This phenomenon is called induction. The electric current in a primary coil contained in a NFC reader or wireless charger creates a magnetic field which, in turn, creates an electric current in the coil cast inside the ring, lighting up the LED. This is the same technology that allows you to tap your card to board public transportation, or tap to pay. Make this ring and take it around town to discover how electromagnetic fields at work!
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
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.