Happy Sparkle Glitter Fun Zone Leds and Javascript
summary
A demo builds an ambient “lightning rod” LED display that shows average temperature and rain using Forecast.io and JavaScript, implemented with Johnny-Five + node-pixel driving WS2812 (NeoPixel) strips. The prototype uses 128 LEDs at ~60 mA each (about 7.5 A), a 1000 µF capacitor and inline data resistor, runs on an 8 A 5 V supply, and implements breathing and top-down rain animations; it works live and is developed by iterating small code-and-hardware tweaks.
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chapters (10)
- 0:00Introduction to LEDs in JavaScript
- 1:07Types of RGB LEDs
- 5:22Self-contained vs host computer
- 8:10Hardware setup for neopixels
- 12:11Johnny Five and Node Pixel basics
- 14:50Building the lightning rod
- 17:40Adding breathing animation
- 19:31Weather animation for rain
- 22:10Experimenting with sensors
- 22:51Resources and conclusion
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