Kevr102 made a rainbow display that shows the time, weather and a personalizable message and shared the build on Instructables:
My project is Rainbow themed, and within this project code I will be using both the Adafruit GFX and Neo Matrix Libraries as well as The FastLED Library, which was a challenge in itself.
This project has NTP Time and an Openweather API so we can scroll both the Time and Weather and I’ve added the ability to add messages as well to both the start of the display and at the end.
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