This gadget pulls the 6 hour weather forecast for your area from OpenWeather, and displays the conditions using an animation.

What started as a single LED that would just tell me if its rainy or snowy, turned into a full-color 8x8 LED matrix that displays an animation based on the 6 hour weather forecast for my zip code from OpenWeather. I'm using an ESP8266 to pull the weather in, and an 8x8 array of WS2812B LEDs to display a few animations I hand-wrote.

I left it at "Completed" but there are still a few animations that have to be written (thunderstorm, heavy wind, etc), but at this point it hangs above my umbrella stand and lets me know if I have to bring an umbrella, so mission accomplished (for now...)