I wore this LED T-Shirt under nice white shirt to teach the class at Hawaii STEM Conference. It is an 8×10 array of individually addressable LEDs (HL1606 strip from +Adafruit Industries ) driven by PJRC Teensy 2.0 and 4 D-cell batteries, with a Pololu Step-Down Voltage Regulator D15V70F5S3 to keep it at 5vdc. Current code is the Basic Pattern sketch from example lib, with mod from AdaVision’s Processing script to deal with zig-zag wiring. The PWM lib mod works too, but there were more examples for this. Adding other effects (like a beating heart, or other animations) is simple matter of programming. Comms & sensors would be cool too… someday.
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, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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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